Run 5 summary

https://en.wikipedia.org/wiki/ChatGPT

Tested 2024-11-21 02:09:57 using Chrome 131.0.6778.69 (runtime settings).

SummaryWaterfall MetricsVideoFilmstrip CoachPageXrayCPU Screenshots

Summary

MetricValue
Page metrics
Performance score75
Total page size820.5 KB
Requests46
Timing metrics
TTFB489 ms
First Paint1.051 s
Fully Loaded10.147 s
Google Web Vitals
TTFB489 ms
First Contentful Paint (FCP) 1.051 s
Largest Contentful Paint (LCP) 1.051 s
Cumulative Layout Shift (CLS) 0.16
Total Blocking Time329 ms
Max Potential FID288 ms
CPU metrics
CPU long tasks4
CPU last long task happens at9.486 s
Visual Metrics
First Visual Change1.066 s
Speed Index2.963 s
Visual Complete 85%9.900 s
Visual Complete 99%13.766 s
Last Visual Change13.766 s
Screenshot
| Waterfall | | Download HAR | 

Waterfall

| Video | Download | 

Video

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| Filmstrip | 

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
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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
| Performance advice | Best practice advice | Privacy advice | Page info | Technologies | 

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.

I am the coach

Coach score

Performance advice (75)

TitleAdviceScore
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-202299
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 740 ms. The total blocking time is 329 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 281.6 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:
    URLTransfer sizeContent size
    https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022 20.5 KB61.5 KB
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 7.7 KB22.3 KB
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 17.1 KB58.1 KB
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 201.5 KB798.8 KB
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 25.1 KB121.3 KB
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 2.7 KB14.8 KB
    https://meta.wikimedia.org/w/index.php...a.org/w/index.php 82.2 KB321.4 KB
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 74.1 KB236.0 KB
    https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn?wikiid=enwiki&type=script 1.2 KB252 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:
    URLTransfer sizeContent size
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 22.2 KB175.6 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)

    TitleAdviceScore
    Cumulative Layout Shift (cumulativeLayoutShift)You have a cumulative layout shift score (0.1561) 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)

    TitleAdviceScore
    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
    TitleChatGPT - Wikipedia
    GeneratorMediaWiki 1.44.0-wmf.3
    Width1904
    Height32105
    DOM elements8710
    Avg DOM depth14
    Max DOM depth26
    Iframes0
    Script tags6
    Local storage1017.1 KB
    Session storage0 b
    Network Information API4g
    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.

    TechnologyConfidenceCategory
    MediaWiki 100  Wikis
    PHP 100  Programming languages
    Apache Traffic Server 9.2.5100  Web servers
    HSTS 100  Security
    | Browser metrics | Visual Metrics | Largest Contentful Paint | Cumulative Layout Shift | Long Aninimation Frames | Visual Elements | Metrics from CDP | Server timings | 

    Visual Metrics

    Browser Metrics

    Google Web Vitals
    Time to first byte (TTFB)489 ms
    First Contentful Paint (FCP)1.051 s
    Largest Contentful Paint (LCP)1.051 s
    Cumulative Layout Shift (CLS)0.16
    Total Blocking Time (TBT)329 ms
    First Contentful Paint info
    Elements that needed recalculate style before FCP8169
    Time spent in recalculate style before FCP111.175 ms
    Extra timings
    TTFB489 ms
    First Paint1.051 s
    Load Event End1.835 s
    Fully loaded10.147 s
    User Timing marks
    mwStartup1.036 s
    mwCentralNoticeBanner1.783 s

    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 typeP
    Element/tag<p></p>
    Render time 1.051 s
    Elements that needed recalculate style before LCP8169
    Time spent in recalculate style before LCP111.175 ms
    Load time0 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)>
    LCP

    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.

    ScoreHTML 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
    Layout shift

    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

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    253 ms289 ms14 ms5 ms9 ms
    https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022

    Forced Style And Layout Duration: 197 ms

    Invoker:  IdleRequestCallback
    Invoker Type: user-callback
    Source Function Name:  doPropagation
    Window attribution: self
    Source char position: 4309

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    220 ms243.8 ms261.2 ms0.1 ms261.1 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    83 ms132.8 ms0.2 ms0 ms0.2 ms

    Forced Style And Layout Duration: 129 ms

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 162788

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    48 ms57.2 ms58.8 ms56.2 ms2.6 ms
    https://en.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%2CstartUp%7Cext.centralauth.ForeignApi%2Ccentralautologin%7Cext.checkUser.clientHints%7Cext.cite.ux-enhancements%7Cext.cx.eventlogging.campaigns%7Cext.cx.model%7Cext.cx.uls.quick.actions%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.growthExperiments.SuggestedEditSession%7Cext.uls.common%2Cinterface%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cjquery%2Coojs%2Csite%7Cjquery.client%2CmakeCollapsible%2CtextSelection%7Cjquery.uls.data%7Cmediawiki.ForeignApi%2CString%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctoc%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.editfont.styles%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmmv.bootstrap%2Ccodex%7Cmw.cx.SiteMapper%7Coojs-ui.styles.icons-interactions%7Cskins.vector.clientPreferences%2Cjs%7Cskins.vector.icons.js%7Cwikibase.client.vector-2022%7Cwikibase.sidebar.tracking&skin=vector-2022&version=breli

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 263890

    https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022

    Invoker:  IdleRequestCallback
    Invoker Type: user-callback
    Source Function Name:  doPropagation
    Window attribution: self
    Source char position: 4309

    https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022

    Forced Style And Layout Duration: 5 ms

    Invoker:  FrameRequestCallback
    Invoker Type: user-callback
    Source Function Name:  flushCssBuffer
    Window attribution: self
    Source char position: 3231

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    23 ms54.4 ms29.6 ms18.7 ms10.9 ms
    https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022

    Invoker:  IdleRequestCallback
    Invoker Type: user-callback
    Source Function Name:  doPropagation
    Window attribution: self
    Source char position: 4309

    https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022

    Invoker:  FrameRequestCallback
    Invoker Type: user-callback
    Source Function Name:  flushCssBuffer
    Window attribution: self
    Source char position: 3231

    Server timings

    namedurationdescription
    cache0hit-front
    host0cp3067

    Custom metrics collected through JavaScript

    There are no custom configured scripts.

    Extra metrics collected using scripting

    There are no custom extra metrics from scripting.

    CDP Performance

    namevalue
    AudioHandlers0
    AudioWorkletProcessors0
    Documents15
    Frames14
    JSEventListeners1170
    LayoutObjects15836
    MediaKeySessions0
    MediaKeys0
    Nodes18535
    Resources46
    ContextLifecycleStateObservers17
    V8PerContextDatas1
    WorkerGlobalScopes0
    UACSSResources0
    RTCPeerConnections0
    ResourceFetchers15
    AdSubframes0
    DetachedScriptStates0
    ArrayBufferContents0
    LayoutCount238
    RecalcStyleCount245
    LayoutDuration317
    RecalcStyleDuration518
    DevToolsCommandDuration61
    ScriptDuration348
    V8CompileDuration11
    TaskDuration2252
    TaskOtherDuration997
    ThreadTime3
    ProcessTime7
    JSHeapUsedSize7805932
    JSHeapTotalSize9789440
    FirstMeaningfulPaint1051

    Visual Elements

    NameDisplay TimeX YWidthHeight
    LargestImage (120px-ChatGPT-Logo.svg.png)10.533 s 1211 611 120 120
    <img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ef/ChatGPT-Logo.svg/120px-ChatGPT-Logo.svg.png" decoding="async" width="120" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ef/ChatGPT-Logo.svg/180px-ChatGPT-Logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ef/ChatGPT-Logo.svg/240px-ChatGPT-Logo.svg.png 2x" data-file-width="512" data-file-height="512">
    Heading10.533 s 478 445 787 40
    <h1 id="firstHeading" class="firstHeading mw-first-heading"></h1>
    | Summary  | Largest responses  | Requests and sizes per content type  | Data per domain | Expires and last modified statistics  | Console log  | Requests loaded after onLoad event  | Render blocking requests  | 

    PageXray

    How the page is built.

    Summary
    HTTP versionHTTP/2.0
    Total requests46
    Total domains4
    Total transfer size820.5 KB
    Total content size2.7 MB
    Responses missing compression14
    Number of cookies2
    Third party cookies0
    Requests per response code
    20044
    2041
    3021

    Largest assets on the page (by transfer size)

    Requests and sizes per content type

    ContentHeader SizeTransfer SizeContent SizeRequests
    html0 b131.8 KB721.4 KB1
    css0 b25.2 KB182.8 KB2
    javascript0 b431.9 KB1.6 MB9
    image0 b209.8 KB193.6 KB19
    svg0 b17.4 KB20.2 KB11
    plain0 b546 B0 b1
    favicon0 b1.7 KB2.7 KB1
    json0 b2.1 KB1.8 KB1
    Total0 b820.5 KB2.7 MB45

    Data per domain

    DomainTotal download timeTransfer SizeContent SizeRequests
    en.wikipedia.org4.385 s545.5 KB2.2 MB24
    upload.wikimedia.org10.927 s191.7 KB175.7 KB20
    meta.wikimedia.org174 ms82.2 KB321.4 KB1
    login.wikimedia.org161 ms1.2 KB252 B1

    Expires and last modified statistics

    typeminmedianmax
    Expires0 seconds0 seconds1 year
    Last modified4 minutes23 weeks8 years

    Console log

    The page logs the following messages to the console.

    LevelMessage
    WARNING https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022 11:274 "This page is using the deprecated ResourceLoader module \"mediawiki.Uri\".\n[1.43] Please use browser native URL."
    SEVERE https://en.wikipedia.org/w/load.php?lang=en&modules=skins.vector.search.codex.scripts%7Cvue&skin=vector-2022&version=148qw 153 Error: <path> attribute transform: Expected transform function, "none".
    WARNING https://en.wikipedia.org/wiki/ChatGPT - The resource https://en.wikipedia.org/static/images/project-logos/enwiki.png was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it has an appropriate `as` value and it is preloaded intentionally.
    WARNING https://en.wikipedia.org/wiki/ChatGPT - The resource https://en.wikipedia.org/static/images/project-logos/enwiki.png was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it has an appropriate `as` value and it is preloaded intentionally.

    Requests loaded after onLoad event

    Included requests done after load event end.

    ContentTransfer SizeRequests
    html0 b0
    css0 b0
    javascript0 b0
    image0 b0
    font0 b0
    favicon1.7 KB1
    json2.1 KB1
    Total3.8 KB2

    Requests loaded after onContentLoad

    Includes requests done after DOM content loaded.

    ContentTransfer SizeRequests
    html0 b0
    css0 b0
    javascript185.2 KB5
    image8.5 KB1
    font0 b0
    plain546 B1
    favicon1.7 KB1
    json2.1 KB1
    Total198.0 KB10

    Render blocking requests

    Render blocking information directly from Chrome.

    BlockingIn body parser blockingPotentially blocking
    201

    Render information

    CPU Long Tasks | CPU Time Spent | CPU Time Spent Per Request | 

    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.

    TypeQuantityTotal duration (ms)
    Total Blocking Time 329
    Max Potential First Input Delay 288
    Long Tasks before First Paint1261
    Long Tasks before First Contentful Paint1261
    Long Tasks before Largest Contentful Paint1261
    Long Tasks after Load Event End2420
    Total Long Tasks4740

    CPU last long task happened at 9.486 s

    Individual Long Tasks

    namestartTimedurationcontainerIdcontainerNamecontainerSrccontainerType
    unknown737261window
    self158459window
    self1839288window
    self9486132window

    CPU time spent

    Calculated using Tracium.

    Categories (ms)
    parseHTML53
    styleLayout836
    paintCompositeRender208
    scriptParseCompile11
    scriptEvaluation346
    garbageCollection12
    other702
    Events (ms)
    UpdateLayoutTree519
    PrePaint327
    Layout316
    FunctionCall293
    RunTask205
    Paint141
    Layerize97
    ParseHTML49
    HitTest38
    Commit22
    PaintImage19
    v8.run18
    RunMicrotasks16
    CpuProfiler::StartProfiling14
    IntersectionObserverController::computeIntersections11
    v8.compile11

    Time spent per request

    URLCPU time (ms)
    https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022374
    https://en.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%2CstartUp%7Cext.centralauth.ForeignApi%2Ccentralautologin%7Cext.checkUser.clientHints%7Cext.cite.ux-enhancements%7Cext.cx.eventlogging.campaigns%7Cext.cx.model%7Cext.cx.uls.quick.actions%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.growthExperiments.SuggestedEditSession%7Cext.uls.common%2Cinterface%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cjquery%2Coojs%2Csite%7Cjquery.client%2CmakeCollapsible%2CtextSelection%7Cjquery.uls.data%7Cmediawiki.ForeignApi%2CString%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctoc%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.editfont.styles%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmmv.bootstrap%2Ccodex%7Cmw.cx.SiteMapper%7Coojs-ui.styles.icons-interactions%7Cskins.vector.clientPreferences%2Cjs%7Cskins.vector.icons.js%7Cwikibase.client.vector-2022%7Cwikibase.sidebar.tracking&skin=vector-2022&version=breli111
    https://meta.wikimedia.org/w/index.php?title=Special:BannerLoader&campaign=C24_WMDE_Desktop_EN_04&banner=B24_WMDE_Desktop_EN_04_var&uselang=en&debug=false22
    afterPageCompleteCheck.jpg | layoutShift.jpg | largestContentfulPaint.jpg | 

    Screenshots

    afterPageCompleteCheck.jpg

    afterPageCompleteCheck.jpg

    layoutShift.jpg

    layoutShift.jpg

    largestContentfulPaint.jpg

    largestContentfulPaint.jpg