Page summary

https://www.mediawiki.org/wiki/How_to_contribute

Tested 2026-03-27 23:52:23 using Chrome 146.0.7680.80 (runtime settings).

SummaryWaterfall MetricsVideoFilmstrip CoachPageXrayCPU
| Summary | | Download Video | Download Timeline Log | Download HAR | Download Console Logs | 

Summary

MetricValue
Page metrics
Performance Score74
Total Page Transfer Size527.7 KB
Requests35
Timing metrics
TTFB [median]398 ms
First Paint [median]820 ms
Fully Loaded [median]3.547 s
Google Web Vitals
TTFB [median]398 ms
First Contentful Paint (FCP) [median]820 ms
Largest Contentful Paint (LCP) [median]1.956 s
Cumulative Layout Shift (CLS) [median]0.00
Total Blocking Time [median]1.582 s
Max Potential FID [median]842 ms
CPU metrics
CPU long tasks [median]10
CPU longest task duration847 ms
CPU last long task happens at4.289 s
Visual Metrics
First Visual Change [median]833 ms
Speed Index [median]1.785 s
Visual Complete 85% [median]1.966 s
Visual Complete 99% [median]2.200 s
Last Visual Change [median]3.300 s
Screenshot of run 2

Timings Summary

Metricminmedianmeanmax
Visual Metrics
FirstVisualChange800 ms833 ms844 ms900 ms
LastVisualChange3.300 s3.300 s3.322 s3.366 s
SpeedIndex1.737 s1.785 s1.784 s1.831 s
LargestImage800 ms833 ms844 ms900 ms
Heading800 ms833 ms844 ms900 ms
LargestContentfulPaint1.900 s1.966 s1.955 s2.000 s
LastMeaningfulPaint1.900 s1.966 s1.955 s2.000 s
VisualReadiness2.466 s2.467 s2.478 s2.500 s
VisualComplete851.900 s1.966 s1.955 s2.000 s
VisualComplete951.900 s1.966 s1.955 s2.000 s
VisualComplete992.200 s2.200 s2.233 s2.300 s
Google Web Vitals
Time To First Byte (TTFB)397 ms398 ms404 ms418 ms
Largest Contentful Paint (LCP)1.900 s1.956 s1.955 s2.008 s
First Contentful Paint (FCP)812 ms820 ms852 ms924 ms
Cumulative Layout Shift (CLS)0000
More metrics
firstPaint812 ms820 ms852 ms924 ms
loadEventEnd3.350 s3.350 s3.376 s3.428 s
User Timing
mwStartup643 ms813 ms823 ms1.012 s
CPU
Total Blocking Time1.550 s1.582 s1.572 s1.584 s
Max Potential FID815 ms842 ms835 ms847 ms
CPU long tasks 10101010
CPU last long task happens at4.229 s4.289 s4.281 s4.326 s
| Waterfall | | Download HAR | 

Waterfall

Run 2 SpeedIndex median

| Video | Download | 

Video

Download video
| Filmstrip | 

Filmstrip

Use--filmstrip.showAll to show all filmstrips.

0 s
0.7 sCPU Long Task duration 128 ms
0.8 sFirst Visual Change 800 msLargest Image 800 msHeading 800 ms
0.9 smwStartup 813 msFirst Contentful Paint 820 ms
1 s
1.1 sCPU Long Task duration 847 ms
1.7 s
1.8 s
1.9 s
2 sLCP <UL> 1.956 sVisual Complete 85% 1.966 sVisual Complete 95% 1.966 sCPU Long Task duration 50 ms
2.1 sCPU Long Task duration 94 ms
2.2 sCPU Long Task duration 298 msVisual Complete 99% 2.200 s
2.3 s
2.4 s
2.5 s
2.6 sCPU Long Task duration 55 msDOM Content Loaded Time 2.570 s
2.7 sCPU Long Task duration 78 ms
2.8 s
2.9 sCPU Long Task duration 326 ms
3 s
3.1 s
3.2 sCPU Long Task duration 106 ms
3.3 sLast Visual Change 3.300 s
3.4 sPage Load Time 3.345 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 8.1.3.

I am the coach

Coach score

Performance advice (74)

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://www.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva99
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://www.mediawiki.org/w/load.php...ki.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://www.mediawiki.org/static/images/mobile/copyright/mediawikiwiki-wordmark.svg
  • https://www.mediawiki.org/static/images/mobile/copyright/mediawikiwiki-wordmark.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 10 CPU long tasks with the total of 2.158 s. The total blocking time is 1.582 s and 1 long task before first contentful paint with total time of 126 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.0
    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
  • unknown
  • unknown
  • unknown
  • self
  • self
  • self
  • 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://www.mediawiki.org/wiki/Special:CentralAutoLogin/start?useformat=mobile&type=script&usesul3=1
  • Avoid extra requests by setting cache headers (cacheHeaders)The page has 12 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 28.7 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/commons/thumb/5/59/Plug-in_Noun_project_4...ject_4032.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/b/be/Source_code_project_11...ject_1171.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/1/16/Hammer_-_Noun_project_...ject_1306.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/7/7f/OOjs_UI_icon_message.s...n_message.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/8/8f/OOjs_UI_icon_book-ltr...._book-ltr.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/4/43/OOjs_UI_icon_language-...guage-ltr.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/4/40/OOjs_UI_icon_speechBub...bbles-ltr.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/c/c1/Vitruvian_Man_Noun_pro...ject_6674.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Community_Noun_project...ject_2280.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Learning_-_The_Noun_Pr...n_Project.svg.png
  • https://www.mediawiki.org/wiki/Special:CentralAutoLogin/start?useformat=mobile&type=script&usesul3=1
  • https://auth.wikimedia.org/metawiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • 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://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva
  • https://www.mediawiki.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=minerva
  • https://www.mediawiki.org/w/api.php?action=webapp-manifest
  • Total JavaScript size shouldn't be too big (javascriptSize)The total JavaScript transfer size is 421.3 kB and the uncompressed size is 1.8 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://www.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva 20.3 KB61.1 KB
    https://www.mediawiki.org/w/load.php...ki.org/w/load.php 8.8 KB24.9 KB
    https://www.mediawiki.org/w/load.php...ki.org/w/load.php 352.4 KB1.4 MB
    https://auth.wikimedia.org/metawiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn 1.4 KB254 B
    https://www.mediawiki.org/w/load.php...ki.org/w/load.php 8.6 KB57.2 KB
    https://www.mediawiki.org/w/load.php...ki.org/w/load.php 19.9 KB112.5 KB
    Make each CSS response small (optimalCssSize)https://www.mediawiki.org/w/load.php?lang=en&modules=ext.discussionTools.init.styles%7Cext.dismissableSiteNotice.styles%7Cext.translate%7Cext.translate.edit.documentation.styles%7Cext.translate.tag.languages%7Cext.wikimediamessages.styles%7Cmediawiki.hlist%7Cmediawiki.widgets.styles%7Cmobile.init.styles%7Coojs-ui-core.icons%2Cstyles%7Coojs-ui.styles.indicators%7Cskins.minerva.codex.styles%7Cskins.minerva.content.styles.images%7Cskins.minerva.icons%2Cstyles%7Cwikibase.client.init&only=styles&skin=minerva size is 33.6 kB (33581) 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://www.mediawiki.org/w/load.php...ki.org/w/load.php 32.8 KB264.9 KB
    Don't use private headers on static content (privateAssets)The page has 3 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.80
    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://www.mediawiki.org/wiki/How_to_contribute
  • https://www.mediawiki.org/wiki/Special:CentralAutoLogin/start?useformat=mobile&type=script&usesul3=1
  • https://auth.wikimedia.org/metawiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • Best practice advice (82)

    TitleAdviceScore
    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://www.mediawik...How_to_contribute has a header content-security-policy that is 1388 characters long. https://www.mediawik...How_to_contribute has a header content-security-policy-report-only that is 1397 characters long. https://www.mediawik...ki.org/w/load.php has a header sourcemap that is 1149 characters long. https://www.mediawik...alAutoLogin/start has a header content-security-policy that is 1388 characters long. https://www.mediawik...alAutoLogin/start has a header content-security-policy-report-only that is 1397 characters long. https://auth.wikimed...gin/checkLoggedIn has a header content-security-policy that is 1388 characters long. https://auth.wikimed...gin/checkLoggedIn has a header content-security-policy-report-only that is 1397 characters long. 93
    Description: Do not send response headers that are too long.
    Offenders:
  • https://www.mediawiki.org/wiki/How_to_contribute
  • https://www.mediawiki.org/wiki/How_to_contribute
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/wiki/Special:CentralAutoLogin/start?useformat=mobile&type=script&usesul3=1
  • https://www.mediawiki.org/wiki/Special:CentralAutoLogin/start?useformat=mobile&type=script&usesul3=1
  • https://auth.wikimedia.org/metawiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • https://auth.wikimedia.org/metawiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • Avoid too many third party requests (thirdParty)The page do 31% requests to third party domains (11 requests and 28.7 kB). First party is 24 requests and 511.7 kB. The regex .*mediawiki.* was used to calculate first/third party requests.50
    Description: Do not load most of your content from third party URLs.
    Avoid unnecessary headers (unnecessaryHeaders)There are 22 responses that sets both a max-age and expires header. There are 35 responses that sets a server header. 43
    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://www.mediawiki.org/wiki/How_to_contribute
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva
  • https://www.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva
  • https://www.mediawiki.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=minerva
  • https://www.mediawiki.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=minerva
  • https://www.mediawiki.org/static/images/mobile/copyright/mediawikiwiki-wordmark.svg
  • https://www.mediawiki.org/static/images/mobile/copyright/mediawikiwiki-wordmark.svg
  • https://www.mediawiki.org/w/api.php?action=webapp-manifest
  • https://www.mediawiki.org/w/api.php?action=webapp-manifest
  • https://upload.wikimedia.org/wikipedia/commons/thumb/5/59/Plug-in_Noun_project_4...ject_4032.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/b/be/Source_code_project_11...ject_1171.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/1/16/Hammer_-_Noun_project_...ject_1306.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/7/7f/OOjs_UI_icon_message.s...n_message.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/8/8f/OOjs_UI_icon_book-ltr...._book-ltr.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/4/43/OOjs_UI_icon_language-...guage-ltr.svg.png
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://upload.wikimedia.org/wikipedia/commons/thumb/4/40/OOjs_UI_icon_speechBub...bbles-ltr.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/c/c1/Vitruvian_Man_Noun_pro...ject_6674.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Community_Noun_project...ject_2280.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Learning_-_The_Noun_Pr...n_Project.svg.png
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/wiki/Special:CentralAutoLogin/start?useformat=mobile&type=script&usesul3=1
  • https://auth.wikimedia.org/metawiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://www.mediawiki.org/static/favicon/mediawiki.ico
  • https://www.mediawiki.org/static/favicon/mediawiki.ico
  • https://www.mediawiki.org/static/apple-touch/mediawiki.png
  • https://www.mediawiki.org/static/apple-touch/mediawiki.png
  • Privacy advice (87)

    TitleAdviceScore
    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://www.mediawiki.org/wiki/How_to_contribute
  • Avoid third party cookies that is used to track the user. (thirdPartyCookies)The page sets 10 third party cookies.0
    Description: Third party cookies are used to track the user. They are automatically blocked in Safari and Firefox.
    Offenders:
  • upload.wikimedia.org
  • upload.wikimedia.org
  • upload.wikimedia.org
  • upload.wikimedia.org
  • upload.wikimedia.org
  • upload.wikimedia.org
  • upload.wikimedia.org
  • upload.wikimedia.org
  • upload.wikimedia.org
  • upload.wikimedia.org
  • Page info

    Page info
    TitleHow to contribute - MediaWiki
    GeneratorMediaWiki 1.46.0-wmf.21
    Width360
    Height6330
    DOM elements731
    Avg DOM depth11
    Max DOM depth15
    Iframes0
    Script tags7
    Local storage1.1 MB
    Session storage0 b
    Network Information API4g
    Resource Hints
    dns-prefetch
    https://meta.wikimedia.org/
    https://www.mediawiki.org/wiki/auth.wikimedia.org
    preconnect
    https://upload.wikimedia.org/

    Technologies used to build the page.

    Data collected using Wappalyzer version 6.10.54. With updated code from Webappanalyzer 2024-12-27. Use --browsertime.firefox.includeResponseBodies htmlor --browsertime.chrome.includeResponseBodies htmlto help Wappalyzer find more information about technologies used.

    TechnologyConfidenceCategory
    MediaWiki 100  Wikis
    PHP 100  Programming languages
    Amazon Web Services 100  PaaS
    Apache Traffic Server 9.2.11100  Web servers
    HSTS 100  Security
    Amazon S3 100  CDN
    | Browser metrics | Visual Metrics | Largest Contentful Paint | Cumulative Layout Shift | Long Aninimation Frames | Visual Elements | Server timings | 

    Data from run 2

    Visual Metrics

    Browser Metrics

    Google Web Vitals
    Time to first byte (TTFB)398 ms
    First Contentful Paint (FCP)820 ms
    Largest Contentful Paint (LCP)1.956 s
    Total Blocking Time (TBT)1.584 s
    First Contentful Paint info
    Elements that needed recalculate style before FCP97
    Time spent in recalculate style before FCP55.143 ms
    Extra timings
    TTFB398 ms
    First Paint820 ms
    Load Event End3.350 s
    Fully loaded3.547 s
    User Timing marks
    mwStartup813 ms

    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 typeUL
    Element/tag<ul class="mw-pt-languages-list"></ul>
    Render time 1.956 s
    Element render delay1.558 s
    TTFB398 ms
    Resource delay0 ms
    Resource load duration0 ms
    Elements that needed recalculate style before LCP592
    Time spent in recalculate style before LCP147.242 ms
    Load time0 ms
    Size (width*height)83331
    DOM path
    div#mw-mf-viewport > div#mw-mf-page-center > main#content > div#bodyContent > div#mw-content-text > div:eq(1) > section#mf-section-0 > div:eq(0) > ul> div#mw-mf-viewport > div#mw-mf-page-center > main#content > div#bodyContent > div#mw-content-text > div:eq(1) > section#mf-section-0 > div:eq(0) > ul>
    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

    No layout shift detected.

    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
    771.4 ms30 ms809.8 ms0.6 ms809.2 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    297.3 ms315.7 ms49 ms38.2 ms10.8 ms
    https://www.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva

    Invoker:  IdleRequestCallback
    Invoker Type: user-callback
    Source Function Name:  doPropagation
    Window attribution: self
    Source char position: 4314

    https://www.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva

    Invoker:  FrameRequestCallback
    Invoker Type: user-callback
    Source Function Name:  flushCssBuffer
    Window attribution: self
    Source char position: 3240

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    295.9 ms66.8 ms316.2 ms313 ms3.2 ms
    https://www.mediawiki.org/w/load.php?lang=en&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.discussionTools.init%2Cminervaicons%7Cext.dismissableSiteNotice%2CeventLogging%2CnavigationTiming%2CtestKitchen%2CwikimediaEvents%7Cext.echo.centralauth%7Cext.eventLogging.metricsPlatform%7Cext.translate.pagetranslation.uls%7Cext.uls.common%2Ci18n%2Clanguagenames%2Cmediawiki%2Cmessages%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.testKitchen%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Ci18n%2CtextSelection%2Culs%7Cjquery.uls.data%2Cgrid%7Cmediawiki.DateFormatter%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Coojs-ui-windows.icons%7Cskins.minerva.scripts%7Cwikibase.databox.fromWikidata&skin=minerva&version=9w5sg

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 556867

    https://www.mediawiki.org/w/load.php?lang=en&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.discussionTools.init%2Cminervaicons%7Cext.dismissableSiteNotice%2CeventLogging%2CnavigationTiming%2CtestKitchen%2CwikimediaEvents%7Cext.echo.centralauth%7Cext.eventLogging.metricsPlatform%7Cext.translate.pagetranslation.uls%7Cext.uls.common%2Ci18n%2Clanguagenames%2Cmediawiki%2Cmessages%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.testKitchen%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Ci18n%2CtextSelection%2Culs%7Cjquery.uls.data%2Cgrid%7Cmediawiki.DateFormatter%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Coojs-ui-windows.icons%7Cskins.minerva.scripts%7Cwikibase.databox.fromWikidata&skin=minerva&version=9w5sg

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 556867

    https://www.mediawiki.org/w/load.php?lang=en&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.discussionTools.init%2Cminervaicons%7Cext.dismissableSiteNotice%2CeventLogging%2CnavigationTiming%2CtestKitchen%2CwikimediaEvents%7Cext.echo.centralauth%7Cext.eventLogging.metricsPlatform%7Cext.translate.pagetranslation.uls%7Cext.uls.common%2Ci18n%2Clanguagenames%2Cmediawiki%2Cmessages%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.testKitchen%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Ci18n%2CtextSelection%2Culs%7Cjquery.uls.data%2Cgrid%7Cmediawiki.DateFormatter%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Coojs-ui-windows.icons%7Cskins.minerva.scripts%7Cwikibase.databox.fromWikidata&skin=minerva&version=9w5sg

    Forced Style And Layout Duration: 2 ms

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 556867

    https://www.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva

    Forced Style And Layout Duration: 58 ms

    Invoker:  FrameRequestCallback
    Invoker Type: user-callback
    Source Function Name:  flushCssBuffer
    Window attribution: self
    Source char position: 3240

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    130.4 ms180.4 ms0 ms0 ms0 ms
    https://www.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva

    Invoker:  IdleRequestCallback
    Invoker Type: user-callback
    Source Function Name:  flushWrites
    Window attribution: self
    Source char position: 19340

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    75.5 ms123.3 ms19 ms19 ms0 ms
    https://www.mediawiki.org/w/load.php?lang=en&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.discussionTools.init%2Cminervaicons%7Cext.dismissableSiteNotice%2CeventLogging%2CnavigationTiming%2CtestKitchen%2CwikimediaEvents%7Cext.echo.centralauth%7Cext.eventLogging.metricsPlatform%7Cext.translate.pagetranslation.uls%7Cext.uls.common%2Ci18n%2Clanguagenames%2Cmediawiki%2Cmessages%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.testKitchen%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Ci18n%2CtextSelection%2Culs%7Cjquery.uls.data%2Cgrid%7Cmediawiki.DateFormatter%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Coojs-ui-windows.icons%7Cskins.minerva.scripts%7Cwikibase.databox.fromWikidata&skin=minerva&version=9w5sg

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 556867

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    68.1 ms330.4 ms1.6 ms1.5 ms0.1 ms
    https://www.mediawiki.org/wiki/How_to_contribute

    Invoker:  https://www.mediawiki.org/wiki/How_to_contribute
    Invoker Type: classic-script
    Window attribution: self

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    66.5 ms59.9 ms74.6 ms74.6 ms0 ms
    https://www.mediawiki.org/w/load.php?lang=en&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.discussionTools.init%2Cminervaicons%7Cext.dismissableSiteNotice%2CeventLogging%2CnavigationTiming%2CtestKitchen%2CwikimediaEvents%7Cext.echo.centralauth%7Cext.eventLogging.metricsPlatform%7Cext.translate.pagetranslation.uls%7Cext.uls.common%2Ci18n%2Clanguagenames%2Cmediawiki%2Cmessages%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.testKitchen%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Ci18n%2CtextSelection%2Culs%7Cjquery.uls.data%2Cgrid%7Cmediawiki.DateFormatter%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Coojs-ui-windows.icons%7Cskins.minerva.scripts%7Cwikibase.databox.fromWikidata&skin=minerva&version=9w5sg

    Invoker:  https://www.mediawiki.org/w/load.php?lang=en&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.discussionTools.init%2Cminervaicons%7Cext.dismissableSiteNotice%2CeventLogging%2CnavigationTiming%2CtestKitchen%2CwikimediaEvents%7Cext.echo.centralauth%7Cext.eventLogging.metricsPlatform%7Cext.translate.pagetranslation.uls%7Cext.uls.common%2Ci18n%2Clanguagenames%2Cmediawiki%2Cmessages%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.testKitchen%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Ci18n%2CtextSelection%2Culs%7Cjquery.uls.data%2Cgrid%7Cmediawiki.DateFormatter%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Coojs-ui-windows.icons%7Cskins.minerva.scripts%7Cwikibase.databox.fromWikidata&skin=minerva&version=9w5sg
    Invoker Type: classic-script
    Window attribution: self

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    57.4 ms96.4 ms66.8 ms52.7 ms14.1 ms
    https://www.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva

    Invoker:  IdleRequestCallback
    Invoker Type: user-callback
    Source Function Name:  doPropagation
    Window attribution: self
    Source char position: 4314

    https://www.mediawiki.org/w/load.php?lang=en&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.discussionTools.init%2Cminervaicons%7Cext.dismissableSiteNotice%2CeventLogging%2CnavigationTiming%2CtestKitchen%2CwikimediaEvents%7Cext.echo.centralauth%7Cext.eventLogging.metricsPlatform%7Cext.translate.pagetranslation.uls%7Cext.uls.common%2Ci18n%2Clanguagenames%2Cmediawiki%2Cmessages%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.testKitchen%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Ci18n%2CtextSelection%2Culs%7Cjquery.uls.data%2Cgrid%7Cmediawiki.DateFormatter%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Coojs-ui-windows.icons%7Cskins.minerva.scripts%7Cwikibase.databox.fromWikidata&skin=minerva&version=9w5sg

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 556867

    https://www.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva

    Invoker:  FrameRequestCallback
    Invoker Type: user-callback
    Source Function Name:  flushCssBuffer
    Window attribution: self
    Source char position: 3240

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    0 ms190.7 ms1.6 ms0 ms1.6 ms
    https://www.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva

    Invoker:  https://www.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva
    Invoker Type: classic-script
    Window attribution: self

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    0 ms29.9 ms33 ms32.8 ms0.2 ms
    No availible script information.

    Server timings

    namedurationdescription
    cache0hit-front
    host0cp3070

    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

    NameDisplay TimeX YWidthHeight
    LargestImage (mediawikiwiki-wordmark.svg)800 ms 53 18 120 18
    <img src="/static/images/mobile/copyright/mediawikiwiki-wordmark.svg" alt="MediaWiki" width="120" height="18" style="width: 7.5em; height: 1.125em;">
    Heading800 ms 16 75 328 37
    <h1 id="firstHeading" class="firstHeading mw-first-heading"></h1>
    LargestContentfulPaint1.966 s 16 208 328 1496
    <ul class="mw-pt-languages-list"></ul>
    | Summary  | Largest responses  | Requests and sizes per content type  | Data per domain | Expires and last modified statistics  | Requests loaded after onLoad event  | Render blocking requests  | 

    PageXray

    How the page is built.

    Summary
    HTTP versionHTTP/2.0
    Total requests35
    Total domains3
    Total transfer size527.7 KB
    Total content size2.1 MB
    Responses missing compression8
    Number of cookies16
    Third party cookies10
    Requests per response code
    20034
    3021

    Largest assets on the page (by transfer size)

    Requests and sizes per content type

    ContentHeader SizeTransfer SizeContent SizeRequests
    html0 b23.2 KB78.4 KB1
    css0 b34.4 KB266.0 KB2
    javascript0 b411.4 KB1.7 MB6
    image0 b34.1 KB22.4 KB11
    svg0 b14.6 KB7.0 KB12
    json0 b1.7 KB263 B1
    favicon0 b8.2 KB15.0 KB1
    Total0 b527.7 KB2.1 MB34

    Data per domain

    DomainTotal download timeTransfer SizeContent SizeRequests
    www.mediawiki.org4.046 s499.7 KB2.1 MB24
    upload.wikimedia.org3.214 s26.6 KB15.6 KB10
    auth.wikimedia.org208 ms1.4 KB254 B1

    Expires and last modified statistics

    typeminmedianmax
    Expires0 seconds4 weeks1 year
    Last modified22 hours21 weeks2 years

    Requests loaded after onLoad event

    Included requests done after load event end.

    ContentTransfer SizeRequests
    html0 b0
    css0 b0
    javascript0 b0
    image7.6 KB1
    font0 b0
    favicon8.2 KB1
    Total15.8 KB2

    Requests loaded after onContentLoad

    Includes requests done after DOM content loaded.

    ContentTransfer SizeRequests
    html0 b0
    css0 b0
    javascript29.9 KB3
    image7.6 KB1
    font0 b0
    favicon8.2 KB1
    Total45.7 KB6

    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 1584
    Max Potential First Input Delay 847
    Long Tasks before First Paint1128
    Long Tasks before First Contentful Paint1128
    Long Tasks before Largest Contentful Paint2975
    Long Tasks after Load Event End1180
    Total Long Tasks102162

    CPU last long task happened at 4.289 s

    Individual Long Tasks

    namestartTimedurationcontainerIdcontainerNamecontainerSrccontainerType
    unknown678128window
    unknown1099847window
    unknown197950window
    unknown209094window
    self2195298window
    self250755window
    self266578window
    self2816326window
    self3159106window
    self4289180window

    CPU time spent

    Calculated using Tracium.

    Categories (ms)
    parseHTML99
    styleLayout1151
    paintCompositeRender85
    scriptParseCompile18
    scriptEvaluation1289
    garbageCollection20
    other759
    Events (ms)
    FunctionCall1089
    Layout828
    RunTask549
    UpdateLayoutTree311
    v8.run91
    CpuProfiler::StartProfiling82
    ParseHTML71
    Paint60
    V8.HandleInterrupts42
    ParseAuthorStyleSheet27
    PaintImage21
    DocumentLoader::CommitNavigation20
    DecodedDataDocumentParser::AppendBytes19
    HTMLDocumentParser::MaybeFetchQueuedPreloads19
    v8.compile18
    RunMicrotasks18
    PrePaint18
    Layerize15
    EventDispatch11
    v8.callFunction11
    V8.GC_SCAVENGER_SCAVENGE_PARALLEL_PHASE10

    Time spent per request

    URLCPU time (ms)
    https://www.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva1179
    https://www.mediawiki.org/w/load.php?lang=en&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.discussionTools.init%2Cminervaicons%7Cext.dismissableSiteNotice%2CeventLogging%2CnavigationTiming%2CtestKitchen%2CwikimediaEvents%7Cext.echo.centralauth%7Cext.eventLogging.metricsPlatform%7Cext.translate.pagetranslation.uls%7Cext.uls.common%2Ci18n%2Clanguagenames%2Cmediawiki%2Cmessages%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.testKitchen%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Ci18n%2CtextSelection%2Culs%7Cjquery.uls.data%2Cgrid%7Cmediawiki.DateFormatter%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Coojs-ui-windows.icons%7Cskins.minerva.scripts%7Cwikibase.databox.fromWikidata&skin=minerva&version=9w5sg316
    https://www.mediawiki.org/wiki/How_to_contribute14
    https://www.mediawiki.org/w/load.php?lang=en&modules=mediawiki.action.view.postEdit%7Cmediawiki.notification%2CtempUserCreated%7Coojs-ui.styles.icons-interactions&skin=minerva&version=18m8f10