Run 3 summary

Summary

Metric	Value
Performance score	78
Total page size	375.8 KB
Requests	37
TTFB	126 ms
Fully Loaded	790 ms
First Visual Change	419 ms
FCP	419 ms
LCP	419 ms
CLS	0.0379802624671916
Total Blocking Time	52 ms
Max Potential FID	101 ms
CPU long tasks	3
Speed Index	419 ms
Visual Complete 85%	419 ms
Visual Complete 99%	419 ms
Last Visual Change	742 ms

Waterfall

Video

Filmstrip

Use--filmstrip.showAll to show all filmstrips.

0 s

0.3 smwStartup 204 msDOM Content Loaded Time 236 msCPU Long Task duration 104 ms

0.5 sFirst Contentful Paint 419 msLCP <P> 419 msFirst Visual Change 419 msVisual Complete 85% 419 msVisual Complete 95% 419 msVisual Complete 99% 419 msCPU Long Task duration 51 msPage Load Time 497 ms

0.7 smwCentralNoticeBanner 626 msCPU Long Task duration 101 ms

0.8 sLast Visual Change 742 msFully Loaded 790 ms

Coach

The coach helps you find performance problems on your web page using web performance best practice rules. And gives you advice on accessibility, privacy and best practices.

Coach score

• Total score 80
• Performance score 78
• Privacy score 86
• Accessibility score 78
• Best practice score 83

Accessibility advice (78)

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Title	Advice	Score
Always set labels on inputs in forms (labelOnInput)	There are 2 input(s) that are missing labels on a form.	80
<input type="checkbox" class="vectorMenuCheckbox" aria-labelledby="p-variants-label"> <input type="checkbox" class="vectorMenuCheckbox" aria-labelledby="p-cactions-label">
Structure your content by using landmarks (landmarks)	The page doesn't use any landmarks.	0
Use headings tags within section tags to better structure your page (sections)	The page doesn't use sections. You could use them to get a better structure of your content.	0
Use caption and th in tables (table)	The page has tables that are missing caption, please use them to give them a proper heading or summary.	80
mp-upper mp-upper

Performance advice (78)

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Title	Advice	Score
Inline CSS for faster first render (inlineCss)	The page has both inline CSS and CSS requests even though it uses a HTTP/2-ish connection. If you have many users on slow connections, it can be better to only inline the CSS. Run your own tests and check the waterfall graph to see what happens.	95
Avoid extra requests by setting cache headers (cacheHeaders)	The page has 21 request(s) that are missing a cache time. Configure a cache time so the browser doesn't need to download them every time. It will save 110.8 kB the next access.	0
https://upload.wikimedia.org/wikipedia/commons/thumb/a/a9/Priyanka_Chopra_2003_%28cropped%29.jpg/120px-Priyanka_Chopra_2003_%28cropped%29.jpg https://upload.wikimedia.org/wikipedia/en/thumb/6/6e/Coelleira_wrecked_on_the_Clubb%2C_Ve_Skerries_post_salvage_attempt.jpg/150px-Coelleira_wrecked_on_the_Clubb%2C_Ve_Skerries_post_salvage_attempt.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/8/82/Iranian_Velayat-90_Naval_Exercise_by_IRIN_%286%29.jpg/160px-Iranian_Velayat-90_Naval_Exercise_by_IRIN_%286%29.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/6/6f/OrteliusWorldMap.jpeg/170px-OrteliusWorldMap.jpeg https://upload.wikimedia.org/wikipedia/commons/thumb/5/54/RUS-2016-Aerial-SPB-St_Michael%27s_Castle_02.jpg/400px-RUS-2016-Aerial-SPB-St_Michael%27s_Castle_02.jpg https://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/31px-Commons-logo.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/3/3d/Mediawiki-logo.png/35px-Mediawiki-logo.png https://upload.wikimedia.org/wikipedia/commons/thumb/7/75/Wikimedia_Community_Logo.svg/35px-Wikimedia_Community_Logo.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikibooks-logo.svg/35px-Wikibooks-logo.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/47px-Wikidata-logo.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/51px-Wikinews-logo.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikiquote-logo.svg/35px-Wikiquote-logo.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/35px-Wikisource-logo.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikispecies-logo.svg/35px-Wikispecies-logo.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Wikiversity_logo_2017.svg/41px-Wikiversity_logo_2017.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Wikivoyage-Logo-v3-icon.svg/35px-Wikivoyage-Logo-v3-icon.svg.png https://upload.wikimedia.org/wikipedia/en/thumb/0/06/Wiktionary-logo-v2.svg/35px-Wiktionary-logo-v2.svg.png https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn?type=script&wikiid=enwiki&proto=https https://meta.wikimedia.org/w/index.php?title=Special:BannerLoader&campaign=wle+2020+se&banner=wle_2020_se&uselang=en&debug=false https://upload.wikimedia.org/wikipedia/foundation/2/20/CloseWindow19x19.png https://upload.wikimedia.org/wikipedia/commons/thumb/8/85/WLE_Austria_Logo_%28no_text%29.svg/50px-WLE_Austria_Logo_%28no_text%29.svg.png
Long cache headers is good (cacheHeadersLong)	The page has 4 request(s) that have a shorter cache time than 30 days (but still a cache time).	96
https://en.wikipedia.org/w/load.php?lang=en&modules=ext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cskins.vector.styles.legacy&only=styles&skin=vector https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector https://en.wikipedia.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector https://en.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%2CstartUp%7Cext.centralauth.centralautologin%7Cext.cx.eventlogging.campaigns%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.uls.common%2Cinterface%2Cpreferences%2Cwebfonts%7Cjquery%2Coojs%2Coojs-router%2Csite%7Cjquery.client%2Ccookie%2CtextSelection%7Cjquery.uls.data%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Cstorage%2Cuser%2Cutil%7Cmediawiki.editfont.styles%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%2Cstartup%7Cmediawiki.ui.button%2Cicon%7Cmmv.bootstrap%2Chead%7Cmmv.bootstrap.autostart%7Cskins.vector.js%7Cuser.defaults&skin=vector&version=1q0ey
Total JavaScript size shouldn't be too big (javascriptSize)	The total JavaScript transfer size is 214.1 kB and the uncompressed size is 749.5 kB. This is quite large.	0
Don't use private headers on static content (privateAssets)	The page has 2 request(s) with private headers. The main page has a private header. It could be right in some cases where the user can be logged in and served specific content. But if your asset is static it should never be private. Make sure that the assets really should be private and only used by one user. Otherwise, make it cacheable for everyone.	90
https://en.wikipedia.org/wiki/Main_Page https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn?type=script&wikiid=enwiki&proto=https

Best practice advice (83)

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Title	Advice	Score
Meta description (metaDescription)	The page is missing a meta description.	0
Avoid Unnecessary Headers (unnecessaryHeaders)	There are 3 response(s) that sets a p3p header. There are 11 response(s) that sets both a max-age and expires header. There are 37 response(s) that sets a server header.	49
https://en.wikipedia.org/wiki/Main_Page https://en.wikipedia.org/wiki/Main_Page https://en.wikipedia.org/w/load.php?lang=en&modules=ext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cskins.vector.styles.legacy&only=styles&skin=vector https://en.wikipedia.org/w/load.php?lang=en&modules=ext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cskins.vector.styles.legacy&only=styles&skin=vector https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector https://en.wikipedia.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector https://en.wikipedia.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector https://upload.wikimedia.org/wikipedia/commons/thumb/a/a9/Priyanka_Chopra_2003_%28cropped%29.jpg/120px-Priyanka_Chopra_2003_%28cropped%29.jpg https://upload.wikimedia.org/wikipedia/en/thumb/6/6e/Coelleira_wrecked_on_the_Clubb%2C_Ve_Skerries_post_salvage_attempt.jpg/150px-Coelleira_wrecked_on_the_Clubb%2C_Ve_Skerries_post_salvage_attempt.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/8/82/Iranian_Velayat-90_Naval_Exercise_by_IRIN_%286%29.jpg/160px-Iranian_Velayat-90_Naval_Exercise_by_IRIN_%286%29.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/6/6f/OrteliusWorldMap.jpeg/170px-OrteliusWorldMap.jpeg https://upload.wikimedia.org/wikipedia/commons/thumb/5/54/RUS-2016-Aerial-SPB-St_Michael%27s_Castle_02.jpg/400px-RUS-2016-Aerial-SPB-St_Michael%27s_Castle_02.jpg https://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/31px-Commons-logo.svg.png https://en.wikipedia.org/static/images/wikimedia-button.png https://en.wikipedia.org/static/images/wikimedia-button.png https://en.wikipedia.org/static/images/poweredby_mediawiki_88x31.png https://en.wikipedia.org/static/images/poweredby_mediawiki_88x31.png https://en.wikipedia.org/static/images/project-logos/enwiki.png https://en.wikipedia.org/static/images/project-logos/enwiki.png https://en.wikipedia.org/w/load.php?lang=en&modules=ext.gadget.ReferenceTooltips%2Ccharinsert%2Cextra-toolbar-buttons%2CrefToolbar%2Cswitcher&skin=vector&version=1l114 https://en.wikipedia.org/w/load.php?lang=en&modules=ext.gadget.ReferenceTooltips%2Ccharinsert%2Cextra-toolbar-buttons%2CrefToolbar%2Cswitcher&skin=vector&version=1l114 https://en.wikipedia.org/w/load.php?lang=en&modules=ext.visualEditor.core.utils.parsing%7Cext.visualEditor.desktopArticleTarget.init%7Cext.visualEditor.progressBarWidget%2CsupportCheck%2CtargetLoader%2CtempWikitextEditorWidget%2Ctrack%2Cve&skin=vector&version=4xoqy https://en.wikipedia.org/w/load.php?lang=en&modules=ext.visualEditor.core.utils.parsing%7Cext.visualEditor.desktopArticleTarget.init%7Cext.visualEditor.progressBarWidget%2CsupportCheck%2CtargetLoader%2CtempWikitextEditorWidget%2Ctrack%2Cve&skin=vector&version=4xoqy https://en.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%2CstartUp%7Cext.centralauth.centralautologin%7Cext.cx.eventlogging.campaigns%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.uls.common%2Cinterface%2Cpreferences%2Cwebfonts%7Cjquery%2Coojs%2Coojs-router%2Csite%7Cjquery.client%2Ccookie%2CtextSelection%7Cjquery.uls.data%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Cstorage%2Cuser%2Cutil%7Cmediawiki.editfont.styles%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%2Cstartup%7Cmediawiki.ui.button%2Cicon%7Cmmv.bootstrap%2Chead%7Cmmv.bootstrap.autostart%7Cskins.vector.js%7Cuser.defaults&skin=vector&version=1q0ey https://en.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%2CstartUp%7Cext.centralauth.centralautologin%7Cext.cx.eventlogging.campaigns%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.uls.common%2Cinterface%2Cpreferences%2Cwebfonts%7Cjquery%2Coojs%2Coojs-router%2Csite%7Cjquery.client%2Ccookie%2CtextSelection%7Cjquery.uls.data%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Cstorage%2Cuser%2Cutil%7Cmediawiki.editfont.styles%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%2Cstartup%7Cmediawiki.ui.button%2Cicon%7Cmmv.bootstrap%2Chead%7Cmmv.bootstrap.autostart%7Cskins.vector.js%7Cuser.defaults&skin=vector&version=1q0ey https://en.wikipedia.org/w/skins/Vector/resources/skins.vector.styles/images/bullet-icon.svg?d4515 https://en.wikipedia.org/w/skins/Vector/resources/skins.vector.styles/images/user-avatar.svg?b7f58 https://upload.wikimedia.org/wikipedia/commons/thumb/3/3d/Mediawiki-logo.png/35px-Mediawiki-logo.png https://upload.wikimedia.org/wikipedia/commons/thumb/7/75/Wikimedia_Community_Logo.svg/35px-Wikimedia_Community_Logo.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikibooks-logo.svg/35px-Wikibooks-logo.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/47px-Wikidata-logo.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/51px-Wikinews-logo.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikiquote-logo.svg/35px-Wikiquote-logo.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/35px-Wikisource-logo.svg.png https://en.wikipedia.org/w/skins/Vector/resources/skins.vector.styles/images/search.svg?4d50a https://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikispecies-logo.svg/35px-Wikispecies-logo.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Wikiversity_logo_2017.svg/41px-Wikiversity_logo_2017.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Wikivoyage-Logo-v3-icon.svg/35px-Wikivoyage-Logo-v3-icon.svg.png https://upload.wikimedia.org/wikipedia/en/thumb/0/06/Wiktionary-logo-v2.svg/35px-Wiktionary-logo-v2.svg.png https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn?type=script&wikiid=enwiki&proto=https https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn?type=script&wikiid=enwiki&proto=https https://meta.wikimedia.org/w/index.php?title=Special:BannerLoader&campaign=wle+2020+se&banner=wle_2020_se&uselang=en&debug=false https://meta.wikimedia.org/w/index.php?title=Special:BannerLoader&campaign=wle+2020+se&banner=wle_2020_se&uselang=en&debug=false https://en.wikipedia.org/static/favicon/wikipedia.ico https://en.wikipedia.org/static/favicon/wikipedia.ico https://en.wikipedia.org/w/extensions/UniversalLanguageSelector/resources/images/cog-sprite.svg?c3fa1 https://upload.wikimedia.org/wikipedia/foundation/2/20/CloseWindow19x19.png https://upload.wikimedia.org/wikipedia/commons/thumb/8/85/WLE_Austria_Logo_%28no_text%29.svg/50px-WLE_Austria_Logo_%28no_text%29.svg.png https://en.wikipedia.org/w/load.php?lang=en&modules=ext.popups.images%2Cmain&skin=vector&version=5ysgv https://en.wikipedia.org/w/load.php?lang=en&modules=ext.popups.images%2Cmain&skin=vector&version=5ysgv

Privacy advice (86)

Show/hide details

Title	Advice	Score
Use a good Content-Security-Policy header to make sure you you avoid Cross Site Scripting (XSS) attacks. (contentSecurityPolicyHeader)	Set a Content-Security-Policy header to make sure you are not open for Cross Site Scripting (XSS) attacks. You can start with setting a Content-Security-Policy-Report-Only header, that will only report the violation, not stop the download.	0
https://en.wikipedia.org/wiki/Main_Page
Set a referrer-policy header to make sure you do not leak user information. (referrerPolicyHeader)	Set a referrer-policy header to make sure you do not leak user information.	0
https://en.wikipedia.org/wiki/Main_Page

Page info

Page info
Title	Wikipedia, the free encyclopedia
Generator	MediaWiki 1.35.0-wmf.31
Width	1350
Height	2405
DOM elements	1023
Avg DOM depth	11
Max DOM depth	18
Iframes	0
Script tags	6
Local storage	530.2 KB
Session storage	0 b
HTML vs AMP	Plain good HTML page

Resource Hints
dns-prefetch
https://login.wikimedia.org/
https://meta.wikimedia.org/

Third party
JQuery	3.4.1
Google Analytics	No
Google Tag Manager	No
Piwik	No
Boomerang	No
New Relic	No

Visual Metrics

Browser Metrics

Largest Contentful Paint

Read more about Largest Contentful Paint.

Detected Cumulative Layout Shift

0.04 layout shift collected from the The Layout Instability API.

Element timings

Server timings

Custom metrics collected through JavaScript

There are no custom configured scripts.

Extra metrics collected using scripting

CDP Performance

PageXray

How the page is built.

Largest assets on the page (by transfer size)

Requests and sizes per content type

Size and requests per domain

Expires, last modified and cookies stats

Requests loaded after onLoad event

Requests loaded after onContentLoad

Includes requests done after onLoad.

CPU

Download the Chrome trace log and drag and drop it into Developer Tools / Performance in Chrome.

Long Tasks

Collected using the Long Task API. A long task is a task that take 50 milliseconds or more.

Individual Long Tasks

CPU time spent

Calculated using Tracium.

Time spent per request

CPU time spent

Third party

Third party requests categorised by Third party web.

First party requests and sizes per content type

Calculated using (.*wikipedia.*||.*wikimedia.*) (use --firstParty to configure).

Third party requests and sizes per content type