Page summary

Summary

Metric	Value
Page metrics
Performance Score	75
Total Page Transfer Size	803.5 KB
Requests	46
Timing metrics
TTFB [median]	490 ms
First Paint [median]	1.082 s
Fully Loaded [median]	10.135 s
Google Web Vitals
TTFB [median]	490 ms
First Contentful Paint (FCP) [median]	1.082 s
Largest Contentful Paint (LCP) [median]	1.082 s
Cumulative Layout Shift (CLS) [median]	0.16
Total Blocking Time [median]	329 ms
Max Potential FID [median]	288 ms
CPU metrics
CPU long tasks [median]	4
CPU longest task duration	291 ms
CPU last long task happens at	9.471 s
Visual Metrics
First Visual Change [median]	1.066 s
Speed Index [median]	2.963 s
Visual Complete 85% [median]	9.900 s
Visual Complete 99% [median]	13.733 s
Last Visual Change [median]	13.733 s

Timings Summary

Waterfall

Run 5 SpeedIndex median

Video

Filmstrip

Use--filmstrip.showAll to show all filmstrips.

0 s

0.8 sCPU Long Task duration 261 ms

1.1 smwStartup 1.036 sDOM Content Loaded Time 1.046 sFirst Contentful Paint 1.051 sLCP <P> 1.051 sFirst Visual Change 1.066 s

1.2 s

1.4 s

1.6 sCPU Long Task duration 59 ms

1.7 s

1.8 smwCentralNoticeBanner 1.783 s

1.9 sPage Load Time 1.835 sCPU Long Task duration 288 ms

2.2 s

9.4 s

9.5 sCPU Long Task duration 132 ms

9.6 s

9.7 sLayout Shift 0.00942 9.626 sLayout Shift 0.00187 9.656 sLayout Shift 0.00222 9.670 sLayout Shift 0.00498 9.700 s

9.8 sLayout Shift 0.00670 9.727 sLayout Shift 0.00387 9.743 sLayout Shift 0.00988 9.772 sLayout Shift 0.00594 9.795 s

9.9 sLayout Shift 0.00686 9.817 sLayout Shift 0.01636 9.839 sLayout Shift 0.00887 9.862 sLayout Shift 0.01699 9.887 sVisual Complete 85% 9.900 s

10 sLayout Shift 0.00720 9.909 sLayout Shift 0.00646 9.933 sLayout Shift 0.01067 9.956 sLayout Shift 0.00438 9.977 sLayout Shift 0.00419 10.000 s

10.1 sLayout Shift 0.00664 10.021 sLayout Shift 0.00284 10.041 sLayout Shift 0.00280 10.063 sLayout Shift 0.00235 10.083 s

10.2 sLayout Shift 0.00214 10.101 sLayout Shift 0.00376 10.122 sLayout Shift 0.00188 10.143 sFully Loaded 10.147 sLayout Shift 0.00152 10.167 sLayout Shift 0.00055 10.187 s

10.3 sLayout Shift 0.00247 10.205 sLayout Shift 0.00235 10.254 s

10.4 s

10.5 s

10.6 sLargest Image 10.533 sHeading 10.533 s

10.7 s

10.8 s

10.9 s

11 s

11.1 sVisual Complete 95% 11.066 s

11.2 s

11.3 s

11.4 s

11.5 s

11.6 s

11.7 s

11.8 s

11.9 s

12 s

12.1 s

12.2 s

12.3 s

12.4 s

12.5 s

12.6 s

12.7 s

12.8 s

12.9 s

13 s

13.1 s

13.2 s

13.3 s

13.4 s

13.5 s

13.6 s

13.7 s

13.8 sLast Visual Change 13.766 sVisual Complete 99% 13.766 s

Coach

The coach helps you find performance problems on your web page using web performance best practice rules. And gives you advice on privacy and best practices. Tested using Coach-core version 8.0.2.

Coach score

• Total score 80
• Performance score 75
• Privacy score 88
• Best practice score 81

Performance advice (75)

Show/hide details

Title	Advice	Score
Avoid slowing down the critical rendering path (avoidRenderBlocking)	The page has 2 blocking requests and 0 in body parser blocking (0 JavaScript and 2 CSS). There are 1 potentially render blocking requests. You need to verify if it is render blocking: https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022	99
Description: The critical rendering path is what the browser needs to do to start rendering the page. Every file requested inside of the head element will postpone the rendering of the page, because the browser need to do the request. Avoid loading JavaScript synchronously inside of the head (you should not need JavaScript to render the page), request files from the same domain as the main document (to avoid DNS lookups) and inline CSS for really fast rendering and a short rendering path.
Offenders: https://en.wikipedia.org/w/load.php...ia.org/w/load.php
Don't scale images in the browser (avoidScalingImages)	The page has 2 images that are scaled more than 100 pixels. It would be better if those images are sent so the browser don't need to scale them.	80
Description: It's easy to scale images in the browser and make sure they look good in different devices, however that is bad for performance! Scaling images in the browser takes extra CPU time and will hurt performance on mobile. And the user will download extra kilobytes (sometimes megabytes) of data that could be avoided. Don't do that, make sure you create multiple version of the same image server-side and serve the appropriate one.
Offenders: https://en.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg https://en.wikipedia.org/static/images/mobile/copyright/wikipedia-tagline-en.svg
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
Description: In the early days of the Internet, inlining CSS was one of the ugliest things you can do. That has changed if you want your page to start rendering fast for your user. Always inline the critical CSS when you use HTTP/1 and HTTP/2 (avoid doing CSS requests that block rendering) and lazy load and cache the rest of the CSS. It is a little more complicated when using HTTP/2. Does your server support HTTP push? Then maybe that can help. Do you have a lot of users on a slow connection and are serving large chunks of HTML? Then it could be better to use the inline technique, becasue some servers always prioritize HTML content over CSS so the user needs to download the HTML first, before the CSS is downloaded.
Avoid CPU Long Tasks (longTasks)	The page has 4 CPU long tasks with the total of 744 ms. The total blocking time is 333 ms and 1 long task before first contentful paint with total time of 261 ms. However the CPU Long Task is depending on the computer/phones actual CPU speed, so you should measure this on the same type of the device that your user is using. Use Geckoprofiler for Firefox or Chromes tracelog to debug your long tasks.	20
Description: Long CPU tasks locks the thread. To the user this is commonly visible as a "locked up" page where the browser is unable to respond to user input; this is a major source of bad user experience on the web today. However the CPU Long Task is depending on the computer/phones actual CPU speed, so you should measure this on the same type of the device that your user is using. To debug you should use the Chrome timeline log and drag/drop it into devtools or use Firefox Geckoprofiler.
Offenders: unknown self self self
Avoid doing redirects (assetsRedirects)	The page has 1 redirect. 1 of the redirects are from the base domain, please fix them!	90
Description: A redirect is one extra step for the user to download the asset. Avoid that if you want to be fast. Redirects are even more of a showstopper on mobile.
Offenders: https://en.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script
Avoid extra requests by setting cache headers (cacheHeaders)	The page has 23 requests that are missing a cache time. Configure a cache time so the browser doesn't need to download them every time. It will save 264.2 kB the next access.	0
Description: The easiest way to make your page fast is to avoid doing requests to the server. Setting a cache header on your server response will tell the browser that it doesn't need to download the asset again during the configured cache time! Always try to set a cache time if the content doesn't change for every request.
Offenders: https://upload.wikimedia.org/wikipedia/en/thumb/1/1b/Semi-protection-shackle.svg...n-shackle.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/e/ef/ChatGPT-Logo.svg/120px...tGPT-Logo.svg.png https://upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progr...ogressive.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/6/64/Dall-e_3_%28jan_%2724%...lligence_icon.png https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Chatgpt-screenshot.png...pt-screenshot.png https://upload.wikimedia.org/wikipedia/commons/thumb/3/3a/ChatGPT_hallucination....hallucination.png https://upload.wikimedia.org/wikipedia/commons/thumb/8/8d/Sam_Altman_CropEdit_Ja...t_James_Tamim.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/d/d9/ChatGPT_availability_b...or_region.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/b/b6/The_AI_Arms_Race_Is_Ch...erything.webp.png https://upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Books_about_ChatGPT_in...aka_bookstore.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/8/8e/ChatGPT_street_art_in_...t_in_Tel_Aviv.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/e/e6/ChatGPT_Biden_and_Trum...den_and_Trump.png https://upload.wikimedia.org/wikipedia/commons/thumb/d/de/Globe_of_letters.svg/2...f_letters.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/a/a9/Noun-technology.svg/29...echnology.svg.png https://upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/1...ory_class.svg.png https://upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/16p...tal_class.svg.png https://upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg https://upload.wikimedia.org/wikipedia/commons/4/4d/Icon_pdf_file.png https://upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg https://upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg https://en.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script https://meta.wikimedia.org/w/index.php...a.org/w/index.php https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn?wikiid=enwiki&type=script
Long cache headers is good (cacheHeadersLong)	The page has 4 requests that have a shorter cache time than 30 days (but still a cache time).	96
Description: Setting a cache header is good. Setting a long cache header (at least 30 days) is even better beacause then it will stay long in the browser cache. But what do you do if that asset change? Rename it and the browser will pick up the new version.
Offenders: https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022 https://en.wikipedia.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022 https://en.wikipedia.org/api/rest_v1/page/summary/Large_language_model
Total JavaScript size shouldn't be too big (javascriptSize)	The total JavaScript transfer size is 442.3 kB and the uncompressed size is 1.7 MB. This is totally crazy! There is really room for improvement here.	0
Description: A lot of JavaScript often means you are downloading more than you need. How complex is the page and what can the user do on the page? Do you use multiple JavaScript frameworks?
Offenders: URL Transfer size Content size https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022 20.4 KB 61.5 KB https://en.wikipedia.org/w/load.php...ia.org/w/load.php 7.7 KB 22.3 KB https://en.wikipedia.org/w/load.php...ia.org/w/load.php 17.1 KB 58.1 KB https://en.wikipedia.org/w/load.php...ia.org/w/load.php 201.5 KB 798.8 KB https://en.wikipedia.org/w/load.php...ia.org/w/load.php 25.1 KB 121.3 KB https://en.wikipedia.org/w/load.php...ia.org/w/load.php 2.7 KB 14.8 KB https://meta.wikimedia.org/w/index.php...a.org/w/index.php 82.2 KB 321.4 KB https://en.wikipedia.org/w/load.php...ia.org/w/load.php 74.1 KB 236.0 KB https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn?wikiid=enwiki&type=script 1.2 KB 252 B
Make each CSS response small (optimalCssSize)	https://en.wikipedia.org/w/load.php?lang=en&modules=ext.cite.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cjquery.makeCollapsible.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022 size is 22.7 kB (22684) and that is bigger than the limit of 14.5 kB. Try to make the CSS files fit into 14.5 KB.	90
Description: Make CSS responses small to fit into the magic number TCP window size of 14.5 KB. The browser can then download the CSS faster and that will make the page start rendering earlier.
Offenders: URL Transfer size Content size https://en.wikipedia.org/w/load.php...ia.org/w/load.php 22.2 KB 175.6 KB
Don't use private headers on static content (privateAssets)	The page has 4 requests 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.	70
Description: If you set private headers on content, that means that the content are specific for that user. Static content should be able to be cached and used by everyone. Avoid setting the cache header to private.
Offenders: https://en.wikipedia.org/wiki/ChatGPT https://en.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script https://meta.wikimedia.org/w/index.php...a.org/w/index.php https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn?wikiid=enwiki&type=script

Best practice advice (81)

Show/hide details

Title	Advice	Score
Cumulative Layout Shift (cumulativeLayoutShift)	You have a cumulative layout shift score (0.1565) that needs improvements. It is in the Google Web Vitals needs improvement range, shift higher than 0.1. You should manually check the filmstrip or video and check if it will affect the user.	50
Description: Cumulative Layout Shift measures the sum total of all individual layout shift scores for unexpected layout shift that occur. The metric is measuring visual stability by quantify how often users experience unexpected layout shifts. It is one of Google Web Vitals.
Meta description (metaDescription)	The page is missing a meta description.	0
Description: Use a page description to make the page more relevant to search engines.
Do not send too long headers (longHeaders)	https://en.wikipedia...ia.org/w/load.php has a header sourcemap that is 1209 characters long.	99
Description: Do not send response headers that are too long.
Offenders: https://en.wikipedia.org/w/load.php...ia.org/w/load.php
Avoid unnecessary headers (unnecessaryHeaders)	There are 17 responses that sets both a max-age and expires header. There are 46 responses that sets a server header.	37
Description: Do not send headers that you don't need. We look for p3p, cache-control and max-age, pragma, server and x-frame-options headers. Have a look at Andrew Betts - Headers for Hackers talk as a guide https://www.youtube.com/watch?v=k92ZbrY815c or read https://www.fastly.com/blog/headers-we-dont-want.
Offenders: https://en.wikipedia.org/wiki/ChatGPT https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022 https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022 https://en.wikipedia.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022 https://en.wikipedia.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022 https://en.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg https://en.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg https://en.wikipedia.org/static/images/icons/wikipedia.png https://en.wikipedia.org/static/images/icons/wikipedia.png https://en.wikipedia.org/static/images/mobile/copyright/wikipedia-tagline-en.svg https://en.wikipedia.org/static/images/mobile/copyright/wikipedia-tagline-en.svg https://upload.wikimedia.org/wikipedia/en/thumb/1/1b/Semi-protection-shackle.svg...n-shackle.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/e/ef/ChatGPT-Logo.svg/120px...tGPT-Logo.svg.png https://upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progr...ogressive.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/6/64/Dall-e_3_%28jan_%2724%...lligence_icon.png https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Chatgpt-screenshot.png...pt-screenshot.png https://upload.wikimedia.org/wikipedia/commons/thumb/3/3a/ChatGPT_hallucination....hallucination.png https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/skins/Vector/resources/skins.vector.styles/images/arr...n-progressive.svg https://en.wikipedia.org/w/skins/Vector/resources/skins.vector.styles/images/lin...r-progressive.svg https://en.wikipedia.org/w/resources/src/mediawiki.skinning/images/magnify-clip-ltr.svg?8330e https://upload.wikimedia.org/wikipedia/commons/thumb/8/8d/Sam_Altman_CropEdit_Ja...t_James_Tamim.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/d/d9/ChatGPT_availability_b...or_region.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/b/b6/The_AI_Arms_Race_Is_Ch...erything.webp.png https://upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Books_about_ChatGPT_in...aka_bookstore.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/8/8e/ChatGPT_street_art_in_...t_in_Tel_Aviv.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/e/e6/ChatGPT_Biden_and_Trum...den_and_Trump.png https://upload.wikimedia.org/wikipedia/commons/thumb/d/de/Globe_of_letters.svg/2...f_letters.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/a/a9/Noun-technology.svg/29...echnology.svg.png https://upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/1...ory_class.svg.png https://upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/16p...tal_class.svg.png https://upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg https://upload.wikimedia.org/wikipedia/commons/4/4d/Icon_pdf_file.png https://upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg https://upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/load.php...ia.org/w/load.php 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...ia.org/w/load.php https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script https://meta.wikimedia.org/w/index.php...a.org/w/index.php https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://en.wikipedia.org/w/load.php...ia.org/w/load.php https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn?wikiid=enwiki&type=script https://en.wikipedia.org/beacon/impression...beacon/impression https://en.wikipedia.org/static/favicon/wikipedia.ico https://en.wikipedia.org/static/favicon/wikipedia.ico https://en.wikipedia.org/api/rest_v1/page/summary/Large_language_model

Privacy advice (88)

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
Description: Content Security Policy is delivered via a HTTP response header, and defines approved sources of content that the browser may load. It can be an effective countermeasure to Cross Site Scripting (XSS) attacks and is also widely supported and usually easily deployed. https://scotthelme.co.uk/content-security-policy-an-introduction/.
Offenders: https://en.wikipedia.org/wiki/ChatGPT
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
Description: Referrer Policy is a new header that allows a site to control how much information the browser includes with navigations away from a document and should be set by all sites. https://scotthelme.co.uk/a-new-security-header-referrer-policy/.
Offenders: https://en.wikipedia.org/wiki/ChatGPT

Page info

Page info
Title	ChatGPT - Wikipedia
Generator	MediaWiki 1.44.0-wmf.3
Width	1904
Height	32105
DOM elements	8710
Avg DOM depth	14
Max DOM depth	26
Iframes	0
Script tags	6
Local storage	1017.1 KB
Session storage	0 b
Network Information API	4g

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

Technologies used to build the page.

Data collected using Wappalyzerversion 6.10.66.  Use --browsertime.firefox.includeResponseBodies htmlor --browsertime.chrome.includeResponseBodies htmlto help Wappalyser find more information about technologies used.

Technology	Confidence	Category
MediaWiki	100	Wikis
PHP	100	Programming languages
Apache Traffic Server 9.2.5	100	Web servers
HSTS	100	Security

Data from run 5

Visual Metrics

Browser Metrics

Largest Contentful Paint

When in time the page main content is rendered (collected using the Largest Contentful Paint API). Read more about Largest Contentful Paint.

Element type	P
Element/tag	<p></p>
Render time	1.051 s
Elements that needed recalculate style before LCP	8169
Time spent in recalculate style before LCP	111.175 ms
Load time	0 ms
Size (width*height)	154584
DOM path
div:eq(2) > div > div:eq(2) > main#content > div#bodyContent > div#mw-content-text > div:eq(0) > p:eq(3)> div:eq(2) > div > div:eq(2) > main#content > div#bodyContent > div#mw-content-text > div:eq(0) > p:eq(3)>

The largest contentful paint is highlighted in the image. If no element is highlighted the element was removed before the screenshot or the LCP API couldn't find the element.

Detected Cumulative Layout Shift

0.15614 cumulative layout shift collected from the Cumulative Layout Shift API.

These HTML elements contribute most to the Cumulative Layout Shifts of the page. The higher score, the more layout shift.

Score	HTML Element
0.01699	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<span class="cdx-text-input__icon cdx-text-input__start-icon"></span>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(1) > header > div:eq(1) > div#p-search > div > div > form#searchform > div#simpleSearch > div > span,body > div:eq(2)
0.01636	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<span class="cdx-text-input__icon cdx-text-input__start-icon"></span>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(1) > header > div:eq(1) > div#p-search > div > div > form#searchform > div#simpleSearch > div > span,body > div:eq(2)
0.01067	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<span class="cdx-text-input__icon cdx-text-input__start-icon"></span>,<div class="mw-page-container"></div>,<img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20">
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(1) > header > div:eq(1) > div#p-search > div > div > form#searchform > div#simpleSearch > div > span,body > div:eq(2),body > div:eq(2) > div > div:eq(2) > main#content > div#bodyContent > div#mw-content-text > div:eq(0) > table:eq(0) > tbody > tr:eq(10) > td > span:eq(1) > a > img
0.00988	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<span class="cdx-text-input__icon cdx-text-input__start-icon"></span>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(1) > header > div:eq(1) > div#p-search > div > div > form#searchform > div#simpleSearch > div > span,body > div:eq(2)
0.00942	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<span class="cdx-text-input__icon cdx-text-input__start-icon"></span>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(1) > header > div:eq(1) > div#p-search > div > div > form#searchform > div#simpleSearch > div > span,body > div:eq(2)
0.00887	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00720	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00686	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00670	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00664	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00646	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00594	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00498	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00438	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00419	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00387	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00376	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00284	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00280	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00247	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00235	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00235	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00222	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00214	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00188	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00187	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00152	<div id="wmde-banner-app" data-v-app=""></div>,<header class="vector-header mw-header"></header>,<div class="mw-page-container"></div>
body > div#wmde-banner-app,body > div:eq(1) > header,body > div:eq(2)
0.00055	<div id="wmde-banner-app" data-v-app=""></div>
body > div#wmde-banner-app

The elements that have shifted place is highlighted in the image (that have a higher value than 0.01). If the element shifted outside of the viewport, you will not see it there. It can be hard to understand what content that has shifted, if that's the case, checkout the video or the filmstrip of the run.

Long Animation Frames

Read more about the Long Animation Frames API here here.

The top 10 longest animation frames entries

Server timings

Custom metrics collected through JavaScript

There are no custom configured scripts.

Extra metrics collected using scripting

There are no custom extra metrics from scripting.

Visual Elements

PageXray

How the page is built.

Largest assets on the page (by transfer size)

Requests and sizes per content type

Data per domain

Expires and last modified statistics

Requests loaded after onLoad event

Included requests done after load event end.

Requests loaded after onContentLoad

Includes requests done after DOM content loaded.

Render blocking requests

Render blocking information directly from Chrome.

Render information

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.

CPU last long task happened at 9.486 s

Individual Long Tasks

CPU time spent

Calculated using Tracium.

Time spent per request