dzone.com

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Free website and domain report on dzone.com

Last Updated: 3rd March, 2021 Update Now
Overview

Snoop Summary for dzone.com

This is a free and comprehensive report about dzone.com. Dzone.com is hosted in United States on a server with an IP address of 35.168.107.116, where USD is the local currency and the local language is English. Our records indicate that dzone.com is owned/operated by DZone, Inc. Dzone.com is expected to earn an estimated $1,777 USD per day from advertising revenue. The sale of dzone.com would possibly be worth $1,297,070 USD. This figure is based on the daily revenue potential of the website over a 24 month period. Dzone.com receives an estimated 283,158 unique visitors every day - an insane amount of traffic! This report was last updated 3rd March, 2021.

About dzone.com

Site Preview: dzone.com dzone.com
Title: dzone.com - fresh links for developers
Description: dzone is a free link-sharing community for developers. Anyone can contribute stories to the incoming queue. Members vote on stories to determine what gets promoted. Everyone can browse, search and comment on stories. It s that simple, enjoy!
Keywords and Tags: abstract class, agile, big data, ci cd pipeline, cloud, database, devops, dzone, git bash commands, gradle vs maven, iot, java, levenshtein distance, microservices in java, mobile, popular, programming, r script, random number generator java, software development, sort arraylist java, technical information, web
Related Terms: mnet vote, mubeat vote, queue, storymirror vote, symfony developers, talented developers, voot vote, xda developers, ystore developers
Fav Icon:
Age: Over 25 years old
Domain Created: 16th May, 1998
Domain Updated: 16th August, 2019
Domain Expires: 15th May, 2022
Review

Snoop Score

4/5 (Excellent!)

Valuation

$1,297,070 USD
Note: All valuation figures are estimates.

Popularity

Very High
Note: Popularity is estimated.

Rank, Reach and Authority

Alexa Rank: 6,677
Alexa Reach: 0.0126%
SEMrush Rank (US): 10,036
SEMrush Authority Score: 73
Moz Domain Authority: 0
Moz Page Authority: 0

Rank By Country

Country Alexa Rank
Bangladesh Flag Bangladesh 5,585
Canada Flag Canada 7,463
Switzerland Flag Switzerland 7,835
Egypt Flag Egypt 10,947
Greece Flag Greece 13,488
Hong Kong Flag Hong Kong 8,081
Indonesia Flag Indonesia 11,639
India Flag India 1,224
Iran, Islamic Republic Of Flag Iran, Islamic Republic Of 7,046
Sri Lanka Flag Sri Lanka 2,514
Mexico Flag Mexico 13,148
Malaysia Flag Malaysia 6,445
Nigeria Flag Nigeria 7,127
Pakistan Flag Pakistan 2,287
Saudi Arabia Flag Saudi Arabia 12,852
Turkey Flag Turkey 8,726
Taiwan, Province Of China Flag Taiwan, Province Of China 12,415
United States Flag United States 9,084
Viet Nam Flag Viet Nam 4,665

Organic vs Paid (Google Ads)

Organic Paid
Keywords: 425,618 0
Traffic: 281,097 0
Cost: $421,308 USD $0 USD
Traffic

Visitors

Daily Visitors: 283,158
Monthly Visitors: 8,618,434
Yearly Visitors: 103,352,624
Note: All visitors figures are estimates.

Visitors By Country

Country Visitors (Unique) Percentage
Bangladesh Flag Bangladesh Daily: 1,699
Monthly: 51,711
Yearly: 620,116
0.6%
Canada Flag Canada Daily: 6,513
Monthly: 198,224
Yearly: 2,377,110
2.3%
Switzerland Flag Switzerland Daily: 1,982
Monthly: 60,329
Yearly: 723,468
0.7%
Egypt Flag Egypt Daily: 2,548
Monthly: 77,566
Yearly: 930,174
0.9%
Greece Flag Greece Daily: 1,416
Monthly: 43,092
Yearly: 516,763
0.5%
Hong Kong Flag Hong Kong Daily: 1,982
Monthly: 60,329
Yearly: 723,468
0.7%
Indonesia Flag Indonesia Daily: 1,982
Monthly: 60,329
Yearly: 723,468
0.7%
India Flag India Daily: 124,306
Monthly: 3,783,492
Yearly: 45,371,802
43.9%
Iran, Islamic Republic Of Flag Iran, Islamic Republic Of Daily: 7,079
Monthly: 215,461
Yearly: 2,583,816
2.5%
Sri Lanka Flag Sri Lanka Daily: 1,699
Monthly: 51,711
Yearly: 620,116
0.6%
Mexico Flag Mexico Daily: 3,398
Monthly: 103,421
Yearly: 1,240,231
1.2%
Malaysia Flag Malaysia Daily: 1,982
Monthly: 60,329
Yearly: 723,468
0.7%
Nigeria Flag Nigeria Daily: 3,115
Monthly: 94,803
Yearly: 1,136,879
1.1%
Other Daily: 60,313
Monthly: 1,835,726
Yearly: 22,014,109
21.3%
Pakistan Flag Pakistan Daily: 9,911
Monthly: 301,645
Yearly: 3,617,342
3.5%
Saudi Arabia Flag Saudi Arabia Daily: 1,699
Monthly: 51,711
Yearly: 620,116
0.6%
Turkey Flag Turkey Daily: 4,531
Monthly: 137,895
Yearly: 1,653,642
1.6%
Taiwan, Province Of China Flag Taiwan, Province Of China Daily: 1,982
Monthly: 60,329
Yearly: 723,468
0.7%
United States Flag United States Daily: 41,058
Monthly: 1,249,673
Yearly: 14,986,131
14.5%
Viet Nam Flag Viet Nam Daily: 3,964
Monthly: 120,658
Yearly: 1,446,937
1.4%
Note: All visitors figures are estimates.
Revenue

Revenue

Daily Revenue: $1,777 USD
Monthly Revenue: $54,080 USD
Yearly Revenue: $648,530 USD
Note: All revenue figures are estimates.

Revenue By Country

Country Revenue Percentage
Bangladesh Flag Bangladesh Daily: $0 USD
Monthly: $12 USD
Yearly: $150 USD
<0.1%
Canada Flag Canada Daily: $16 USD
Monthly: $490 USD
Yearly: $5,880 USD
0.9%
Switzerland Flag Switzerland Daily: $2 USD
Monthly: $46 USD
Yearly: $557 USD
0.1%
Egypt Flag Egypt Daily: $0 USD
Monthly: $9 USD
Yearly: $102 USD
<0.1%
Greece Flag Greece Daily: $0 USD
Monthly: $9 USD
Yearly: $106 USD
<0.1%
Hong Kong Flag Hong Kong Daily: $0 USD
Monthly: $11 USD
Yearly: $130 USD
<0.1%
Indonesia Flag Indonesia Daily: $2 USD
Monthly: $58 USD
Yearly: $693 USD
0.1%
India Flag India Daily: $508 USD
Monthly: $15,476 USD
Yearly: $185,590 USD
28.6%
Iran, Islamic Republic Of Flag Iran, Islamic Republic Of Daily: $0 USD
Monthly: $0 USD
Yearly: $0 USD
<0.1%
Sri Lanka Flag Sri Lanka Daily: $0 USD
Monthly: $4 USD
Yearly: $43 USD
<0.1%
Mexico Flag Mexico Daily: $1 USD
Monthly: $37 USD
Yearly: $448 USD
0.1%
Malaysia Flag Malaysia Daily: $1 USD
Monthly: $31 USD
Yearly: $371 USD
0.1%
Nigeria Flag Nigeria Daily: $1 USD
Monthly: $33 USD
Yearly: $397 USD
0.1%
Other Daily: $0 USD
Monthly: $0 USD
Yearly: $0 USD
<0.1%
Pakistan Flag Pakistan Daily: $6 USD
Monthly: $172 USD
Yearly: $2,060 USD
0.3%
Saudi Arabia Flag Saudi Arabia Daily: $1 USD
Monthly: $16 USD
Yearly: $196 USD
<0.1%
Turkey Flag Turkey Daily: $2 USD
Monthly: $69 USD
Yearly: $827 USD
0.1%
Taiwan, Province Of China Flag Taiwan, Province Of China Daily: $0 USD
Monthly: $7 USD
Yearly: $84 USD
<0.1%
United States Flag United States Daily: $1,234 USD
Monthly: $37,556 USD
Yearly: $450,376 USD
69.4%
Viet Nam Flag Viet Nam Daily: $1 USD
Monthly: $43 USD
Yearly: $521 USD
0.1%
Note: All revenue figures are estimates.
SEO

Backlinks Analysis (SEMrush)

Backlinks: 14,707,633
Referring Domains: 51,623
Referring IPs: 48,117
Dzone.com has 14,707,633 backlinks according to SEMrush. 77% of these backlinks are "dofollow" (follow) links which allow the flow of link equity to pass through, which may improve dzone.com's search engine rankings. Other links are treated as 'hints' by search engines and may also pass link equity, depending on what search engines decide in each case.
100% of dzone.com's backlinks are text and image links, which are ideal for SEO. Other backlink types may be unrecognized or ignored by search engines.

Top New Follow Links

1
Source: http://www.iaitew.me/
Target: https://dzone.com/storage/temp/3742332-nodejsdeployarch.png

2
Source: http://www.iaitew.me/
Target: https://dzone.com/storage/temp/8007984-11.jpg

3
Source: http://www.iaitew.me/
Target: https://dz2cdn3.dzone.com/thumbnail?fid=8235414&w=660

4
Source: https://hosthint.blogspot.com/
Target: https://dzone.com/users/4319827/magazine23.html

5
Source: https://hosthint.blogspot.com/
Target: https://dzone.com/users/4297072/fortech3.html

Top Ranking Keywords (US)

1
Keyword: dzone
Ranked Page: https://dzone.com/

2
Keyword: ci cd pipeline
Ranked Page: https://dzone.com/articles/learn-how-to-setup-a-cicd-pipeline-from-scratch

3
Keyword: abstract class
Ranked Page: https://dzone.com/articles/when-to-use-abstract-class-and-intreface

4
Keyword: random number generator java
Ranked Page: https://dzone.com/articles/random-number-generation-in-java

5
Keyword: levenshtein distance
Ranked Page: https://dzone.com/articles/the-levenshtein-algorithm-1

Domain Analysis

Value Length
Domain: dzone.com 9
Domain Name: dzone 5
Extension (TLD): com 3
Expiry Check:

Page Speed Analysis

Average Load Time: 2.37 seconds
Load Time Comparison: Faster than 31% of sites

PageSpeed Insights

Avg. (All Categories) 69
Performance 78
Accessibility 77
Best Practices 73
SEO 82
Progressive Web App 36
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://dzone.com/
Updated: 27th February, 2021

2.21 seconds
First Contentful Paint (FCP)
40%
47%
13%

0.00 seconds
First Input Delay (FID)
98%
1%
1%

Simulate loading on desktop
78

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for dzone.com. This includes details about optimizing page load times which can result in a better user experience.

Metrics

Speed Index — 1.1 s
The time taken for the page contents to be visibly populated.
Time to Interactive — 1.6 s
The time taken for the page to become fully interactive.
Cumulative Layout Shift — 0.05
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

First CPU Idle — 1.6 s
The time taken for the page's main thread to be quiet enough to handle input.
Estimated Input Latency — 10 ms
The time taken for the page to respond to user input (during the busiest 5 second window of page load). Users are likely to perceive dzone.com as laggy when the latency is higher than 0.05 seconds.
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Image
https://ml314.com/utsync.ashx?eid=50052&et=0&fp=2frCQduOE2VRc-d9l3uDNRzCxX73QmU-HUo5CBDpAXc8&gdpr=0&gdpr_consent=&return=https%3A%2F%2Fps.eyeota.net%2Fmatch%3Fbid%3Dr8hrb20%26uid%3Dnil%26referrer_pid%3Dr8hrb20
http/1.1
1539.2629999842
1559.5009999815
646
0
302
image/gif
https://ml314.com/csync.ashx?fp=9a2f10e5-c3d4-44fc-a905-614e61a730e2&person_id=3616973713867538479&eid=53819
http/1.1
1559.156000003
1575.7619999931
312
43
200
image/gif
Image
https://ml314.com/csync.ashx?fp=2frCQduOE2VRc-d9l3uDNRzCxX73QmU-HUo5CBDpAXc8&person_id=3616973713867538479&eid=50052&return=https%3a%2f%2fps.eyeota.net%2fmatch%3fbid%3dr8hrb20%26uid%3dnil%26referrer_pid%3dr8hrb20
http/1.1
1560.0519999862
1593.0079999962
397
0
302
text/html
https://dz2cdn1.dzone.com/thumbnail?fid=14472856&w=280&caller=dzImageFid-zones.previewV2&uri=/index.html&h=190
http/1.1
1586.8619999965
1609.3359999941
18474
17931
200
image/jpeg
Image
https://dz2cdn2.dzone.com/thumbnail?fid=14466605&w=280&caller=dzImageFid-zones.previewV2&uri=/index.html&h=190
http/1.1
1587.0639999921
1655.769999983
23301
22761
200
image/jpeg
Image
https://dz2cdn4.dzone.com/thumbnail?fid=14470859&w=280&caller=dzImageFid-zones.previewV2&uri=/index.html&h=190
http/1.1
1587.3720000091
1640.4949999996
23097
22554
200
image/jpeg
Image
https://ps.eyeota.net/match?bid=r8hrb20&uid=nil&referrer_pid=r8hrb20
http/1.1
1593.6109999893
1611.5069999942
440
70
200
image/gif
Image
https://www.google-analytics.com/collect?v=1&_v=j88&a=1471392662&t=event&ni=1&_s=1&dl=https%3A%2F%2Fdzone.com%2F&ul=en-us&de=UTF-8&dt=DZone%3A%20Programming%20%26%20DevOps%20news%2C%20tutorials%20%26%20tools&sd=24-bit&sr=800x600&vp=1350x940&je=0&ec=Scroll%20Depth&ea=%2F&el=25&_u=aGDAAEAjQAAAAC~&jid=&gjid=&cid=506564710.1614443486&tid=UA-410289-1&_gid=35119598.1614443486&gtm=2wg2h0K25QL22&cd5=&cd12=Non-Profit&cd14=Medium-Small%20(50%20-%20199%20Employees)&cd15=wordpress-100596-293564.cloudwaysapps.com&cd16=&cd19=&cd20=&z=1406176427
http/1.1
1692.0990000071
1697.6060000015
606
35
200
image/gif
Image
https://dz2cdn4.dzone.com/thumbnail?fid=14472855&w=280&caller=dzImageFid-zones.previewV2&uri=/index.html&h=190
http/1.1
1719.677999994
1771.9890000008
17654
17118
200
image/jpeg
Image
https://dz2cdn4.dzone.com/thumbnail?fid=14470891&w=280&caller=dzImageFid-zones.previewV2&uri=/index.html&h=190
http/1.1
2670.5849999853
2721.3369999954
17821
17280
200
image/jpeg
Image
https://dz2cdn2.dzone.com/thumbnail?fid=14460401&w=280&caller=dzImageFid-zones.previewV2&uri=/index.html&h=190
http/1.1
2670.7109999843
2689.9649999978
7376
6986
200
image/jpeg
Image
https://dz2cdn4.dzone.com/thumbnail?fid=14457255&w=248&caller=dzImageFid-zones.previewV2&uri=/index.html&h=190
http/1.1
2671.0209999874
2691.8549999828
13676
13156
200
image/jpeg
Image
https://dz2cdn1.dzone.com/thumbnail?fid=14462400&w=280&caller=dzImageFid-zones.previewV2&uri=/index.html&h=190
http/1.1
2802.6280000049
2851.7690000008
11459
12474
200
image/jpeg
Image
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
255.86
7.252
268.658
9.317
347.034
8.019
356.221
145.124
501.436
18.498
519.997
5.145
532.044
6.927
546.858
22.71
569.808
23.215
593.653
643.703
1237.404
7.057
1244.881
24.174
1269.137
16.029
1286.375
8.727
1296.3
6.488
1302.911
8.141
1312.041
15.705
1327.795
25.007
1362.22
5.941
1371.692
6.389
1384.657
6.132
1392.88
19.818
1417.767
33.29
1451.247
6.933
1462.266
11.094
1510.055
16.199
1526.629
19.225
1567.47
8.89
1612.751
8.147
1693.981
23.153
1717.288
5.21
1746.17
7.333
1812.947
6.475
2696.07
9.66
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data

Opportunities

Properly size images — Potential savings of 192 KiB
Images can slow down the page's load time. Dzone.com should consider serving more appropriate-sized images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://dz2cdn1.dzone.com/thumbnail?fid=14469840&w=740&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
89397
66070
https://dz2cdn1.dzone.com/thumbnail?fid=14436468&w=740&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
59086
38551
https://dz2cdn4.dzone.com/thumbnail?fid=14453283&w=250&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
21027
17684
https://dz2cdn1.dzone.com/thumbnail?fid=14454660&w=250&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
18537
15590
https://dzone.com/themes/dz20/images/dz_cropped.png
23672
13129
https://dz2cdn1.dzone.com/thumbnail?fid=14439368&w=250&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
15289
12849
https://dz2cdn3.dzone.com/thumbnail?fid=14469782&w=250&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
15026
12637
https://dz2cdn2.dzone.com/thumbnail?fid=14462981&w=250&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
13539
11387
https://dz2cdn3.dzone.com/thumbnail?fid=14464318&w=250&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
10871
9136
Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Dzone.com should consider lazy-loading offscreen and hidden images.
Minify CSS — Potential savings of 3 KiB
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Dzone.com should consider minifying CSS files.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://dz2cdn3.dzone.com/storage/pub/14472403-combined.css
33293
2568
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Dzone.com should consider minifying JS files.
Remove unused CSS — Potential savings of 31 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Dzone.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://dz2cdn3.dzone.com/storage/pub/14472403-combined.css
33293
31332
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Serve images in next-gen formats — Potential savings of 66 KiB
Image formats like PNG and JPEG have poor compression when compared to other next-gen formats, such as JPEG 200, JPEG XR and WebP.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://dz2cdn1.dzone.com/thumbnail?fid=14469840&w=740&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
89397
30231
https://dz2cdn1.dzone.com/thumbnail?fid=14436468&w=740&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
59086
24948
https://dzone.com/themes/dz20/images/dz_cropped.png
23672
12906
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Initial server response time was short — Root document took 160 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://dzone.com/
163.31
Avoid multiple page redirects — Potential savings of 190 ms
Redirects can cause additional delays before the page can begin loading. Dzone.com should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://dzone.com/
190
https://dzone.com/
0
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers — Potential savings of 9 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
URL Potential Savings (Bytes)
https://ml314.com/tag.aspx?2712021
9128

Diagnostics

Avoids enormous network payloads — Total size was 1,143 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://dz2cdn2.dzone.com/storage/pub/14472401-combined.js
248014
https://fonts.dzone.com/themes/dz20/font/fontello.woff?11773374
120066
https://securepubads.g.doubleclick.net/gpt/pubads_impl_2021022401.js?31060295
105107
https://dz2cdn1.dzone.com/thumbnail?fid=14469840&w=740&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
89397
https://dz2cdn1.dzone.com/thumbnail?fid=14436468&w=740&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
59645
https://www.googletagmanager.com/gtag/js?id=G-7ZXEBRP6FQ&l=dataLayer&cx=c
54371
https://www.googletagmanager.com/gtm.js?id=GTM-K25QL22
43281
https://www.google-analytics.com/gtm/js?id=GTM-TSD9TZP&cid=506564710.1614443486
37122
https://dz2cdn3.dzone.com/storage/pub/14472403-combined.css
33293
https://dzone.com/
32707
Uses efficient cache policy on static assets — 6 resources found
Dzone.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://ps.eyeota.net/match?bid=r8hrb20&uid=nil&referrer_pid=r8hrb20
0
440
https://www.google-analytics.com/plugins/ua/linkid.js
3600000
1460
https://www.google-analytics.com/analytics.js
7200000
19615
https://ml314.com/tag.aspx?2712021
77236000
12957
https://in.ml314.com/ud.ashx?topiclimit=&cb=2712021
86387000
593
https://dzone.com/themes/dz20/images/dz_cropped.png
176386000
24058
Avoid chaining critical requests — 4 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Dzone.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures — 1 user timing
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
Name Type Start Time (Ms) Duration (Ms)
gpt-tag-load
Mark
563.512
JavaScript execution time — 0.6 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://dz2cdn2.dzone.com/storage/pub/14472401-combined.js
727.391
600.849
18.39
https://dzone.com/
250.991
7.067
4.812
Unattributable
97.519
1.191
0.177
Minimizes main-thread work — 1.4 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
814.507
Style & Layout
167.456
Other
133.765
Rendering
89.076
Script Parsing & Compilation
66.812
Parse HTML & CSS
40.097
Garbage Collection
38.954
All text remains visible during webfont loads
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
Keep request counts low and transfer sizes small — 61 requests • 1,143 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
61
1170323
Script
12
547682
Image
25
415248
Font
1
120066
Stylesheet
2
43869
Document
1
32707
Other
20
10751
Media
0
0
Third-party
33
308651
Minimize third-party usage — Third-party code blocked the main thread for 0 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
126719
0
97652
0
60041
0
16970
0
1679
0
1591
0
1366
0
1354
0
1279
0
Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 2 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://dz2cdn2.dzone.com/storage/pub/14472401-combined.js
1250
322
https://dzone.com/
389
73
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Metrics

First Contentful Paint — 1.0 s
The time taken for the first image or text on the page to be rendered.
Largest Contentful Paint — 2.1 s
The timing of the largest text or image that is painted.
Total Blocking Time — 270 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Other

First Meaningful Paint — 1.0 s
The time taken for the primary content of the page to be rendered.

Opportunities

Eliminate render-blocking resources — Potential savings of 540 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Dzone.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
https://dz2cdn3.dzone.com/storage/pub/14472403-combined.css
33293
270
https://dz2cdn3.dzone.com/storage/pub/14472404-combined.css
10576
230
Remove unused JavaScript — Potential savings of 284 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://dz2cdn2.dzone.com/storage/pub/14472401-combined.js
248014
148057
https://securepubads.g.doubleclick.net/gpt/pubads_impl_2021022401.js?31060295
105107
90351
https://www.googletagmanager.com/gtag/js?id=G-7ZXEBRP6FQ&l=dataLayer&cx=c
54371
28990
https://www.google-analytics.com/gtm/js?id=GTM-TSD9TZP&cid=506564710.1614443486
37122
23597
Preload key requests — Potential savings of 190 ms
Key requests can be preloaded by using '<link rel=preload>'. Dzone.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
URL Potential Savings (Ms)
https://fonts.dzone.com/themes/dz20/font/fontello.woff?11773374
190
Preload Largest Contentful Paint image — Potential savings of 590 ms
It is recommended to preload images used by LCP elements, to improve LCP time.
URL Potential Savings (Ms)
https://dz2cdn1.dzone.com/thumbnail?fid=14469840&w=740&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
590

Diagnostics

Avoid an excessive DOM size — 1,013 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
1013
Maximum DOM Depth
i
17
Maximum Child Elements
34

Other

Max Potential First Input Delay — 320 ms
Users could experience a delay when interacting with the page.

Diagnostics

Does not use passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Source
Image elements do not have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
URL Failing Elements
https://dzone.com/themes/dz20/images/dz_cropped.png
https://dz2cdn4.dzone.com/thumbnail?fid=14453283&w=250&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
https://dz2cdn1.dzone.com/thumbnail?fid=14454660&w=250&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
https://dz2cdn1.dzone.com/thumbnail?fid=14439368&w=250&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
https://dz2cdn3.dzone.com/thumbnail?fid=14469782&w=250&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
https://dz2cdn2.dzone.com/thumbnail?fid=14462981&w=250&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
https://dz2cdn3.dzone.com/thumbnail?fid=14464318&w=250&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
https://dz2cdn4.dzone.com/thumbnail?fid=14445159&w=125&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
img
77

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of dzone.com. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Names and labels

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<frame>` or `<iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
`<object>` elements have `[alt]` text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Dzone.com may provide assistance to deaf or hearing-impaired users with captions on videos.

Names and labels

Buttons do not have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Failing Elements
Image elements do not have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Failing Elements
img
Links do not have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements
AI
IoT
347
346
IoT

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
73

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that dzone.com should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Links to cross-origin destinations are safe
Improve performance and prevent security vulnerabilities by adding rel="noopener" and rel="noreferrer" to external links.
Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Avoids `unload` event listeners
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.
Avoids Application Cache
Application cache is deprecated and is no longer recommended.
Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
Bootstrap
3.3.5
jQuery
2.1.1
Lo-Dash
2.4.1
AngularJS
1.4.7
Moment.js
2.10.3
Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://dzone.com/
Allowed
Includes front-end JavaScript libraries with known security vulnerabilities — 34 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Library Version Vulnerability Count Highest Severity
5
Medium
4
Medium
7
High
15
High
3
Medium

Audits

Displays images with incorrect aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
URL Aspect Ratio (Displayed) Aspect Ratio (Actual)
https://dz2cdn2.dzone.com/thumbnail?fid=14466605&w=280&caller=dzImageFid-zones.previewV2&uri=/index.html&h=190
280 x 190 (1.47)
304 x 190 (1.60)
https://dz2cdn4.dzone.com/thumbnail?fid=14470859&w=280&caller=dzImageFid-zones.previewV2&uri=/index.html&h=190
280 x 190 (1.47)
304 x 190 (1.60)
https://dz2cdn1.dzone.com/thumbnail?fid=14472856&w=280&caller=dzImageFid-zones.previewV2&uri=/index.html&h=190
280 x 190 (1.47)
304 x 190 (1.60)
https://dz2cdn4.dzone.com/thumbnail?fid=14470891&w=280&caller=dzImageFid-zones.previewV2&uri=/index.html&h=190
280 x 190 (1.47)
304 x 190 (1.60)
https://dz2cdn4.dzone.com/thumbnail?fid=14472855&w=280&caller=dzImageFid-zones.previewV2&uri=/index.html&h=190
280 x 190 (1.47)
304 x 190 (1.60)
https://dz2cdn4.dzone.com/thumbnail?fid=14457255&w=248&caller=dzImageFid-zones.previewV2&uri=/index.html&h=190
280 x 190 (1.47)
304 x 190 (1.60)
https://dz2cdn1.dzone.com/thumbnail?fid=14462400&w=280&caller=dzImageFid-zones.previewV2&uri=/index.html&h=190
280 x 190 (1.47)
304 x 190 (1.60)
https://dz2cdn2.dzone.com/thumbnail?fid=14460401&w=280&caller=dzImageFid-zones.previewV2&uri=/index.html&h=190
280 x 190 (1.47)
304 x 190 (1.60)

Audits

Browser errors were logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
Source Description
Failed to load resource: net::ERR_BLOCKED_BY_CLIENT.Inspector
Failed to load resource: net::ERR_BLOCKED_BY_CLIENT.Inspector
Missing source maps for large first-party JavaScript
Consider deploying source maps for added benefits such as the ability to debug while in production.
URL Map URL
https://dz2cdn2.dzone.com/storage/pub/14472401-combined.js
82

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for dzone.com. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of dzone.com on mobile screens.
Document uses legible font sizes
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Tap targets are sized appropriately
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Links are crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Links do not have descriptive text — 2 links found
Make use of descriptive link text to assist search engines in understanding the content.
Image elements do not have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Failing Elements
img

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
36

Progressive Web App

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of dzone.com. This includes details about web app manifests.

PWA Optimized

Redirects HTTP traffic to HTTPS
It is advised to redirect all HTTP traffic to HTTPS, in order to enable secure web features for all users.
Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of dzone.com on mobile screens.

Installable

Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
Failure reason
No manifest was fetched

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Does not provide a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Avg. (All Categories) 59
Performance 27
Accessibility 75
Best Practices 67
SEO 85
Progressive Web App 42
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://dzone.com/
Updated: 27th February, 2021

2.00 seconds
First Contentful Paint (FCP)
40%
50%
10%

0.02 seconds
First Input Delay (FID)
91%
6%
3%

Simulate loading on mobile
27

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for dzone.com. This includes details about optimizing page load times which can result in a better user experience.

Metrics

Cumulative Layout Shift — 0.046
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Opportunities

Properly size images
Images can slow down the page's load time. Dzone.com should consider serving more appropriate-sized images.
Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Dzone.com should consider lazy-loading offscreen and hidden images.
Minify CSS — Potential savings of 3 KiB
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Dzone.com should consider minifying CSS files.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://dz2cdn3.dzone.com/storage/pub/14459701-combined.css
33294
2568
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Dzone.com should consider minifying JS files.
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Initial server response time was short — Root document took 140 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://dzone.com/
137.563
Avoid multiple page redirects — Potential savings of 630 ms
Redirects can cause additional delays before the page can begin loading. Dzone.com should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://dzone.com/
630
https://dzone.com/
0
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers — Potential savings of 9 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
URL Potential Savings (Bytes)
https://ml314.com/tag.aspx?2712021
9128

Diagnostics

Avoids enormous network payloads — Total size was 967 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://dz2cdn2.dzone.com/storage/pub/14459703-combined.js
248015
https://fonts.dzone.com/themes/dz20/font/fontello.woff?11773374
120005
https://securepubads.g.doubleclick.net/gpt/pubads_impl_2021022301.js
105522
https://dz2cdn1.dzone.com/thumbnail?fid=14469840&w=740&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
89376
https://dz2cdn1.dzone.com/thumbnail?fid=14436468&w=740&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
59645
https://www.googletagmanager.com/gtag/js?id=G-7ZXEBRP6FQ&l=dataLayer&cx=c
54370
https://dzone.com/
50099
https://www.googletagmanager.com/gtm.js?id=GTM-K25QL22
43281
https://www.google-analytics.com/gtm/js?id=GTM-TSD9TZP&cid=416795403.1614443507
37122
https://dz2cdn3.dzone.com/storage/pub/14459701-combined.css
33294
Avoid chaining critical requests — 4 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Dzone.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures — 1 user timing
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
Name Type Start Time (Ms) Duration (Ms)
gpt-tag-load
Mark
535.407
All text remains visible during webfont loads
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
Keep request counts low and transfer sizes small — 50 requests • 967 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
50
990489
Script
12
547950
Image
13
217445
Font
1
120005
Document
2
50434
Stylesheet
2
43871
Other
20
10784
Media
0
0
Third-party
34
309263
Minimize third-party usage — Third-party code blocked the main thread for 220 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
97651
83.008
59435
75.712
16983
44.956
126988
17.692
1672
0
1591
0
1366
0
1349
0
1294
0
599
0
Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
Avoid large layout shifts — 4 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
0.033351878272163
0.009790245178101
0.0027503322447658
0.00030472431120985
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 11 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://dz2cdn2.dzone.com/storage/pub/14459703-combined.js
5790
1560
https://dzone.com/
1440
341
https://www.googletagmanager.com/gtag/js?id=G-7ZXEBRP6FQ&l=dataLayer&cx=c
9645
157
https://in.ml314.com/ud.ashx?topiclimit=&cb=2712021
10245
100
https://securepubads.g.doubleclick.net/gpt/pubads_impl_2021022301.js
4697
99
https://www.google-analytics.com/analytics.js
3017
98
https://www.google-analytics.com/plugins/ua/linkid.js
8633
82
https://securepubads.g.doubleclick.net/tag/js/gpt.js
2940
77
https://www.google-analytics.com/gtm/js?id=GTM-TSD9TZP&cid=416795403.1614443507
9529
64
https://www.googletagmanager.com/gtm.js?id=GTM-K25QL22
8580
53
https://ml314.com/tag.aspx?2712021
9413
52
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Other

Network Requests
Below is a list of network requests that were made during page load.
URL Protocol Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
http://dzone.com/
http/1.1
0
30.549999995856
498
0
301
text/html
https://dzone.com/
http/1.1
31.40899999562
167.97699999734
50099
236004
200
text/html
Document
https://dz2cdn3.dzone.com/storage/pub/14459701-combined.css
http/1.1
188.01299999905
246.8000000008
33294
202970
200
text/css
Stylesheet
https://dz2cdn3.dzone.com/storage/pub/14459705-combined.css
http/1.1
188.28499999654
211.3559999998
10577
106663
200
text/css
Stylesheet
https://dzone.com/themes/dz20/images/dz_cropped.png
http/1.1
199.23700000072
259.16699999652
24058
23672
200
image/png
Image
https://securepubads.g.doubleclick.net/tag/js/gpt.js
http/1.1
199.6020000006
209.71099999588
20084
56975
200
text/javascript
Script
https://dz2cdn2.dzone.com/storage/pub/14459703-combined.js
http/1.1
200.3079999995
479.80100000132
248015
937963
200
text/javascript
Script
https://dz2cdn2.dzone.com/storage/pub/14459704-combined.js
http/1.1
200.65900000191
248.03399999655
3707
9629
200
text/javascript
Script
https://www.google-analytics.com/analytics.js
http/1.1
201.1530000018
206.29999999801
19615
47332
200
text/javascript
Script
https://fonts.dzone.com/themes/dz20/font/fontello.woff?11773374
http/1.1
290.20699999819
379.56599999598
120005
119248
200
application/octet-stream
Font
https://securepubads.g.doubleclick.net/gpt/pubads_impl_2021022301.js
http/1.1
455.6689999954
465.11299999838
105522
297253
200
text/javascript
Script
https://www.googletagmanager.com/gtm.js?id=GTM-K25QL22
http/1.1
608.99200000131
633.63399999798
43281
126130
200
application/javascript
Script
https://static-42andpark-com.s3-us-west-2.amazonaws.com/ads/ad-300x250.png
http/1.1
617.87499999627
994.84500000108
599
171
200
image/png
Image
https://dzone.com/services/internal/data/dzone-saveContext?node=3091171
http/1.1
1306.7569999985
1354.8699999956
514
89
200
application/json
XHR
https://dzone.com/services/internal/data/dzone-saveContext?node=3088063
http/1.1
1308.0580000023
1415.3489999953
514
89
200
application/json
XHR
https://dzone.com/services/internal/data/dzone-saveContext?node=3088234
http/1.1
1309.5140000005
1425.5419999972
514
89
200
application/json
XHR
https://drlimmode9ddd.cloudfront.net/f/3eJyrVspUslJQMjS2sFTSUVAqB3FSqvLzUvWS83NBIiUgkTQQCygYn5kH5BrWAgBt/A3m==/1389.html?o=u&r=&l=https://dzone.com/
http/1.1
1317.7409999989
1416.6350000014
335
0
200
Document
https://www.google-analytics.com/plugins/ua/linkid.js
http/1.1
1340.1779999986
1344.4959999979
1460
1569
200
text/javascript
Script
https://dz2cdn1.dzone.com/thumbnail?fid=14436468&w=740&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
http/1.1
1366.0239999954
1398.1419999982
59645
59086
200
image/jpeg
Image
https://dz2cdn3.dzone.com/thumbnail?fid=14464318&w=250&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
http/1.1
1366.6369999992
1385.4989999963
11305
10871
200
image/jpeg
Image
https://www.googletagmanager.com/gtag/js?id=G-7ZXEBRP6FQ&l=dataLayer&cx=c
http/1.1
1429.9519999986
1454.7759999987
54370
140297
200
application/javascript
Script
https://www.google-analytics.com/gtm/js?id=GTM-TSD9TZP&cid=416795403.1614443507
http/1.1
1434.7049999997
1463.0409999954
37122
95704
200
application/javascript
Script
https://ml314.com/tag.aspx?2712021
http/1.1
1464.0419999996
1482.723000001
12957
28755
200
application/javascript
Script
https://analytics.google.com/g/collect?v=2&tid=G-7ZXEBRP6FQ&gtm=2oe2h0&_p=595649238&sr=360x640&_gaz=1&ul=en-us&cid=416795403.1614443507&_s=1&dl=https%3A%2F%2Fdzone.com%2F&dt=DZone%3A%20Programming%20%26%20DevOps%20news%2C%20tutorials%20%26%20tools&sid=1614443506&sct=1&seg=0&en=page_view&_fv=1&_ss=1
1521.9399999987
1543.7359999996
0
0
-1
Other
https://stats.g.doubleclick.net/g/collect?v=2&tid=G-7ZXEBRP6FQ&cid=416795403.1614443507&gtm=2oe2h0&aip=1
1522.8019999995
1544.1319999954
0
0
-1
Other
https://www.google-analytics.com/j/collect?v=1&_v=j88&a=595649238&t=pageview&_s=1&dl=https%3A%2F%2Fdzone.com%2F&dp=%2F&ul=en-us&de=UTF-8&dt=DZone%3A%20Programming%20%26%20DevOps%20news%2C%20tutorials%20%26%20tools&sd=24-bit&sr=360x640&vp=360x640&je=0&_u=aGBAAEAjQAAAAC~&jid=333912418&gjid=842441620&cid=416795403.1614443507&tid=UA-410289-1&_gid=1370598446.1614443507&_r=1&_slc=1&z=1381495019
http/1.1
1542.4769999954
1546.8390000024
620
4
200
text/plain
XHR
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http/1.1
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application/javascript
Script
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http/1.1
1564.2890000017
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691
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XHR
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http/1.1
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http/1.1
1573.6249999973
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13539
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http/1.1
1624.7349999976
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https://match.adsrvr.org/track/cmf/generic?ttd_pid=d0tro1j&ttd_tpi=1
http/1.1
1625.0290000025
1721.2349999973
621
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text/html
https://sync.crwdcntrl.net/map/c=6985/tp=BOMB?https://ml314.com/csync.ashx%3Ffp%3D%24%7Bprofile_id%7D%26eid%3D50146%26person_id%3D3616973719222616121
http/1.1
1625.5420000016
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http/1.1
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http/1.1
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http/1.1
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XHR
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http/1.1
1698.676
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XHR
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Image
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http/1.1
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Image
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http/1.1
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http/1.1
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http/1.1
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Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
206.433
9.717
221.056
7.451
228.536
5.582
248.414
5.355
283.645
11.295
296.308
170.744
470.484
19.235
489.76
6.316
496.596
22.731
546.429
24.838
572.019
780.245
1352.31
14.712
1367.582
24.59
1394.506
5.895
1401.95
6.824
1408.992
12.173
1422.468
11.246
1435.343
13.199
1448.572
20.451
1491.169
7.078
1512.475
8.56
1521.9
39.304
1561.441
16.008
1580.206
12.947
1606.412
14.577
1694.214
25.094
1721.383
9.286
1740.315
13.749
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data

Metrics

First Contentful Paint — 3.9 s
The time taken for the first image or text on the page to be rendered.
Speed Index — 5.1 s
The time taken for the page contents to be visibly populated.

Other

First Meaningful Paint — 3.9 s
The time taken for the primary content of the page to be rendered.

Opportunities

Remove unused CSS — Potential savings of 31 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Dzone.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://dz2cdn3.dzone.com/storage/pub/14459701-combined.css
33294
31424
Serve images in next-gen formats — Potential savings of 66 KiB
Image formats like PNG and JPEG have poor compression when compared to other next-gen formats, such as JPEG 200, JPEG XR and WebP.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://dz2cdn1.dzone.com/thumbnail?fid=14469840&w=740&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
89376
30210
https://dz2cdn1.dzone.com/thumbnail?fid=14436468&w=740&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
59086
24948
https://dzone.com/themes/dz20/images/dz_cropped.png
23672
12906
Preload key requests — Potential savings of 780 ms
Key requests can be preloaded by using '<link rel=preload>'. Dzone.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
URL Potential Savings (Ms)
https://fonts.dzone.com/themes/dz20/font/fontello.woff?11773374
780

Diagnostics

Serve static assets with an efficient cache policy — 7 resources found
Dzone.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://static-42andpark-com.s3-us-west-2.amazonaws.com/ads/ad-300x250.png
0
599
https://ps.eyeota.net/match?bid=r8hrb20&uid=nil&referrer_pid=r8hrb20
0
440
https://www.google-analytics.com/plugins/ua/linkid.js
3600000
1460
https://www.google-analytics.com/analytics.js
7200000
19615
https://ml314.com/tag.aspx?2712021
77216000
12957
https://in.ml314.com/ud.ashx?topiclimit=&cb=2712021
86385000
593
https://dzone.com/themes/dz20/images/dz_cropped.png
176384000
24058
Avoid an excessive DOM size — 1,019 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
1019
Maximum DOM Depth
i
17
Maximum Child Elements
40

Metrics

Largest Contentful Paint — 8.4 s
The timing of the largest text or image that is painted.
Time to Interactive — 10.1 s
The time taken for the page to become fully interactive.
Total Blocking Time — 1,740 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Other

First CPU Idle — 9.9 s
The time taken for the page's main thread to be quiet enough to handle input.
Max Potential First Input Delay — 1,560 ms
Users could experience a delay when interacting with the page.
Estimated Input Latency — 860 ms
The time taken for the page to respond to user input (during the busiest 5 second window of page load). Users are likely to perceive dzone.com as laggy when the latency is higher than 0.05 seconds.
First Contentful Paint (3G) — 7920 ms
The time taken for the first image or text on the page to be rendered while on a 3G network.

Opportunities

Eliminate render-blocking resources — Potential savings of 2,090 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Dzone.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
https://dz2cdn3.dzone.com/storage/pub/14459701-combined.css
33294
1080
https://dz2cdn3.dzone.com/storage/pub/14459705-combined.css
10577
930
Remove unused JavaScript — Potential savings of 284 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://dz2cdn2.dzone.com/storage/pub/14459703-combined.js
248015
148057
https://securepubads.g.doubleclick.net/gpt/pubads_impl_2021022301.js
105522
90740
https://www.googletagmanager.com/gtag/js?id=G-7ZXEBRP6FQ&l=dataLayer&cx=c
54370
28824
https://www.google-analytics.com/gtm/js?id=GTM-TSD9TZP&cid=416795403.1614443507
37122
23597
Preload Largest Contentful Paint image — Potential savings of 1,080 ms
It is recommended to preload images used by LCP elements, to improve LCP time.
URL Potential Savings (Ms)
https://dz2cdn1.dzone.com/thumbnail?fid=14436468&w=740&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
1080

Diagnostics

Reduce JavaScript execution time — 3.9 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://dz2cdn2.dzone.com/storage/pub/14459703-combined.js
3382.676
2698.356
87.844
https://dzone.com/
1140.9
130.7
29.284
Unattributable
290.724
4.272
0.736
https://www.googletagmanager.com/gtag/js?id=G-7ZXEBRP6FQ&l=dataLayer&cx=c
168.036
145.092
17.524
https://www.google-analytics.com/analytics.js
158.78
105.516
28.94
https://www.google-analytics.com/gtm/js?id=GTM-TSD9TZP&cid=416795403.1614443507
111.152
95.364
10.612
https://securepubads.g.doubleclick.net/gpt/pubads_impl_2021022301.js
107.04
61.04
36.892
https://in.ml314.com/ud.ashx?topiclimit=&cb=2712021
106.508
103.552
1.032
https://www.googletagmanager.com/gtm.js?id=GTM-K25QL22
103.724
77.992
16.62
https://www.google-analytics.com/plugins/ua/linkid.js
84.928
81.468
1.576
https://securepubads.g.doubleclick.net/tag/js/gpt.js
76.94
65.608
8.404
https://ml314.com/tag.aspx?2712021
55.292
39.372
12.816
Minimize main-thread work — 5.9 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
3617.624
Style & Layout
828.444
Other
495.608
Rendering
314.392
Script Parsing & Compilation
256.688
Parse HTML & CSS
204.44
Garbage Collection
150.896
Does not use passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Source
Image elements do not have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
URL Failing Elements
https://dzone.com/themes/dz20/images/dz_cropped.png
https://dz2cdn3.dzone.com/thumbnail?fid=14469782&w=250&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
https://dz2cdn2.dzone.com/thumbnail?fid=14462981&w=250&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
https://dz2cdn3.dzone.com/thumbnail?fid=14464318&w=250&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
img
75

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of dzone.com. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Names and labels

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
`<object>` elements have `[alt]` text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Dzone.com may provide assistance to deaf or hearing-impaired users with captions on videos.

Names and labels

Buttons do not have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Failing Elements
`<frame>` or `<iframe>` elements do not have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Failing Elements
Image elements do not have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Failing Elements
img
Links do not have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements
347
346
IoT

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
67

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that dzone.com should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Links to cross-origin destinations are safe
Improve performance and prevent security vulnerabilities by adding rel="noopener" and rel="noreferrer" to external links.
Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Avoids `unload` event listeners
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.
Avoids Application Cache
Application cache is deprecated and is no longer recommended.
Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
Bootstrap
3.3.5
jQuery
2.1.1
Lo-Dash
2.4.1
AngularJS
1.4.7
Moment.js
2.10.3
Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://dzone.com/
Allowed
Includes front-end JavaScript libraries with known security vulnerabilities — 34 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Library Version Vulnerability Count Highest Severity
5
Medium
4
Medium
7
High
15
High
3
Medium

Audits

Displays images with incorrect aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
URL Aspect Ratio (Displayed) Aspect Ratio (Actual)
https://dz2cdn1.dzone.com/thumbnail?fid=14469840&w=740&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
285 x 190 (1.50)
740 x 462 (1.60)
https://dz2cdn1.dzone.com/thumbnail?fid=14436468&w=740&caller=ThumbnailUrl-assets.spotlight&uri=/index.html
284 x 190 (1.49)
640 x 400 (1.60)
Serves images with low resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
URL Displayed size Actual size Expected size
https://dzone.com/themes/dz20/images/dz_cropped.png
161 x 42
241 x 63
322 x 84

Audits

Browser errors were logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
Source Description
Failed to load resource: net::ERR_BLOCKED_BY_CLIENT.Inspector
Failed to load resource: net::ERR_BLOCKED_BY_CLIENT.Inspector
Missing source maps for large first-party JavaScript
Consider deploying source maps for added benefits such as the ability to debug while in production.
URL Map URL
https://dz2cdn2.dzone.com/storage/pub/14459703-combined.js
85

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for dzone.com. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of dzone.com on mobile screens.
Document uses legible font sizes — 99% legible text
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Source Selector % of Page Text Font Size
.badge-container
0.82%
10px
.oUhbcgvbnoZkfWVcC .featured-header .date
0.19%
10px
99.00%
≥ 12px
Tap targets are sized appropriately — 100% appropriately sized tap targets
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Links are crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Links do not have descriptive text — 2 links found
Make use of descriptive link text to assist search engines in understanding the content.
Image elements do not have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Failing Elements
img

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
42

Progressive Web App

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of dzone.com. This includes details about web app manifests.

PWA Optimized

Redirects HTTP traffic to HTTPS
It is advised to redirect all HTTP traffic to HTTPS, in order to enable secure web features for all users.
Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of dzone.com on mobile screens.

Installable

Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
Failure reason
No manifest was fetched

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Does not provide a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Hosting

Server Location

Server IP Address: 35.168.107.116
Continent: North America
Country: United States
United States Flag
Region:
City:
Longitude: -97.822
Latitude: 37.751
Currencies: USD
USN
USS
Languages: English

Web Hosting Provider

Name IP Address
Amazon Technologies Inc.
Registration

Domain Registrant

Private Registration: No
Name:
Organization: DZone, Inc
Country: US
City:
State: North Carolina
Post Code:
Email:
Phone:
Note: Registration information is derived from various sources and may be inaccurate.

Domain Registrar

Name IP Address
Wild West Domains, LLC 23.205.107.72
Security

Visitor Safety

Mature Content: Not Likely
McAfee WebAdvisor Rating: Safe
WOT Rating: 4.7/5 (7 reviews)
WOT Trustworthiness: 93/100
WOT Child Safety: 91/100
Note: Safety information is not guaranteed.

SSL/TLS Certificate

Issued To: *.dzone.com
Issued By: Amazon
Valid From: 26th July, 2020
Valid To: 26th August, 2021
Subject: CN = *.dzone.com
Hash: 3b633966
Issuer: CN = Amazon
OU = Server CA 1B
O = Amazon
S = US
Version: 2
Serial Number: 19856837504253893929184010336958649454
Serial Number (Hex): 0EF049ACEF56AB548ED7FEDD546F946E
Valid From: 26th July, 2024
Valid To: 26th August, 2024
Signature Algorithm (Short Name): RSA-SHA256
Signature Algorithm (Long Name): sha256WithRSAEncryption
Authority Key Identifier: keyid:59:A4:66:06:52:A0:7B:95:92:3C:A3:94:07:27:96:74:5B:F9:3D:D0
Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication
CRL Distribution Points:
Full Name:
URI:http://crl.sca1b.amazontrust.com/sca1b.crl

Certificate Policies: Policy: 2.16.840.1.114412.1.2
Policy: 2.23.140.1.2.1

Authority Information Access: OCSP - URI:http://ocsp.sca1b.amazontrust.com
CA Issuers - URI:http://crt.sca1b.amazontrust.com/sca1b.crt

SCT List: Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : F6:5C:94:2F:D1:77:30:22:14:54:18:08:30:94:56:8E:
E3:4D:13:19:33:BF:DF:0C:2F:20:0B:CC:4E:F1:64:E3
Timestamp : Jul 26 16:28:11.186 2020 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:44:02:20:18:D2:56:1B:D6:25:EC:45:E0:D4:8C:2E:
18:31:BD:49:A6:CB:60:76:CC:E7:19:98:36:9F:3A:34:
E3:B7:18:1D:02:20:5B:75:F2:64:06:96:16:FB:B8:7B:
F2:5A:8F:10:B4:EF:D3:2A:41:F1:3C:01:56:69:70:14:
DE:BB:18:95:AC:92
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 5C:DC:43:92:FE:E6:AB:45:44:B1:5E:9A:D4:56:E6:10:
37:FB:D5:FA:47:DC:A1:73:94:B2:5E:E6:F6:C7:0E:CA
Timestamp : Jul 26 16:28:11.237 2020 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:44:02:20:2F:62:CD:3F:54:7C:ED:32:FF:D5:48:1F:
53:87:56:BB:10:0E:F2:94:AD:D2:A0:80:D5:6E:58:FB:
41:BF:D7:D9:02:20:75:20:51:E1:77:8E:D9:E5:7E:EF:
90:32:D9:B6:7D:CD:98:E8:25:18:D9:33:4A:C1:48:BC:
7D:B9:08:12:A4:20
Key Usage: Digital Signature, Key Encipherment
Basic Constraints: CA:FALSE
Subject Alternative Name: DNS:dzone.com
DNS:*.dzone.com
Technical

DNS Lookup

A Records

Host IP Address Class TTL
dzone.com. 35.168.107.116 IN 59
dzone.com. 54.234.73.200 IN 59
dzone.com. 54.88.144.61 IN 59

NS Records

Host Nameserver Class TTL
dzone.com. ns-1205.awsdns-22.org. IN 21599
dzone.com. ns-125.awsdns-15.com. IN 21599
dzone.com. ns-1928.awsdns-49.co.uk. IN 21599
dzone.com. ns-875.awsdns-45.net. IN 21599

MX Records

Priority Host Server Class TTL
10 dzone.com. dzone-com.mail.protection.outlook.com. IN 299

SOA Records

Domain Name Primary NS Responsible Email TTL
dzone.com. ns-1205.awsdns-22.org. awsdns-hostmaster.amazon.com. 899

TXT Records

Host Value Class TTL
dzone.com. MS=ms74952404 IN 299
dzone.com. atlassian-domain-verification=07tZ8Aqm+MkgsNaAkC3NQU3EblD7OdHhYaLLO1GbwLvd1Ppn6V6EuKCOcxQxMQCY IN 299
dzone.com. bugcrowd-verification=ff8e6859d285e32323dd9f33396589f8 IN 299
dzone.com. google-site-verification=VVpHqwCHCFW3rvLhKYrS68QXn6EeeoaAWc4g4ipu6hc IN 299
dzone.com. google-site-verification=p4mN6RED2I-UeVN2u2Af2PSihkQtDhKma5d-YFVUBuU IN 299
dzone.com. v=spf1 IN 299

HTTP Response Headers

HTTP-Code: HTTP/1.1 405 Method Not Allowed
Cache-control: no-cache="set-cookie"
Content-Type: text/html;charset=UTF-8
Date: 3rd March, 2021
Server: Apache
Content-Language: en
Set-Cookie: *
Vary: User-Agent
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
Connection: keep-alive

Whois Lookup

Created: 16th May, 1998
Changed: 16th August, 2019
Expires: 15th May, 2022
Registrar: Wild West Domains, LLC
Status: clientTransferProhibited
clientUpdateProhibited
clientRenewProhibited
clientDeleteProhibited
Nameservers: ns-1205.awsdns-22.org
ns-125.awsdns-15.com
ns-1928.awsdns-49.co.uk
ns-875.awsdns-45.net
Owner Organization: DZone, Inc
Owner State: North Carolina
Owner Country: US
Owner Email: Select Contact Domain Holder link at https://www.secureserver.net/whois?plid=1387&domain=dzone.com
Admin Email: Select Contact Domain Holder link at https://www.secureserver.net/whois?plid=1387&domain=dzone.com
Tech Email: Select Contact Domain Holder link at https://www.secureserver.net/whois?plid=1387&domain=dzone.com
Full Whois: Domain Name: dzone.com
Registry Domain ID: 2138077_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.wildwestdomains.com
Registrar URL: http://www.wildwestdomains.com
Updated Date: 2019-08-16T12:29:04Z
Creation Date: 1998-05-16T23:00:00Z
Registrar Registration Expiration Date: 2022-05-15T23:00:00Z
Registrar: Wild West Domains, LLC
Registrar IANA ID: 440
Registrar Abuse Contact Email: abuse@wildwestdomains.com
Registrar Abuse Contact Phone: +1.4806242505
Reseller: Domains Priced Right
Domain Status: clientTransferProhibited http://www.icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited http://www.icann.org/epp#clientUpdateProhibited
Domain Status: clientRenewProhibited http://www.icann.org/epp#clientRenewProhibited
Domain Status: clientDeleteProhibited http://www.icann.org/epp#clientDeleteProhibited
Registrant Organization: DZone, Inc
Registrant State/Province: North Carolina
Registrant Country: US
Registrant Email: Select Contact Domain Holder link at https://www.secureserver.net/whois?plid=1387&domain=dzone.com
Tech Email: Select Contact Domain Holder link at https://www.secureserver.net/whois?plid=1387&domain=dzone.com
Admin Email: Select Contact Domain Holder link at https://www.secureserver.net/whois?plid=1387&domain=dzone.com
Name Server: NS-1205.AWSDNS-22.ORG
Name Server: NS-875.AWSDNS-45.NET
Name Server: NS-125.AWSDNS-15.COM
Name Server: NS-1928.AWSDNS-49.CO.UK
DNSSEC: unsigned
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2021-03-03T17:53:01Z <<<

For more information on Whois status codes, please visit https://www.icann.org/resources/pages/epp-status-codes-2014-06-16-en

TERMS OF USE: The data contained in this registrar's Whois database, while believed by the
registrar to be reliable, is provided "as is" with no guarantee or warranties regarding its
accuracy. This information is provided for the sole purpose of assisting you in obtaining
information about domain name registration records. Any use of this data for any other purpose
is expressly forbidden without the prior written permission of this registrar. By submitting
an inquiry, you agree to these terms and limitations of warranty. In particular, you agree not
to use this data to allow, enable, or otherwise support the dissemination or collection of this
data, in part or in its entirety, for any purpose, such as transmission by e-mail, telephone,
postal mail, facsimile or other means of mass unsolicited, commercial advertising or solicitations
of any kind, including spam. You further agree not to use this data to enable high volume, automated
or robotic electronic processes designed to collect or compile this data for any purpose, including
mining this data for your own personal or commercial purposes. Failure to comply with these terms
may result in termination of access to the Whois database. These terms may be subject to modification
at any time without notice.

Nameservers

Name IP Address
ns-1205.awsdns-22.org 205.251.196.181
ns-125.awsdns-15.com 205.251.192.125
ns-1928.awsdns-49.co.uk 205.251.199.136
ns-875.awsdns-45.net 205.251.195.107
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Subdomains

Domain Subdomain
dotnet
java

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