Page summary

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

Tested 2025-04-05 19:58:13 using Chrome 134.0.6998.35 (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 Size497.2 KB
Requests36
Timing metrics
TTFB [median]490 ms
First Paint [median]876 ms
Fully Loaded [median]4.130 s
Google Web Vitals
TTFB [median]490 ms
First Contentful Paint (FCP) [median]876 ms
Largest Contentful Paint (LCP) [median]1.496 s
Cumulative Layout Shift (CLS) [median]0.00
Interaction To Next Paint (INP) [median]224 ms
Total Blocking Time [median]1.546 s
Max Potential FID [median]350 ms
CPU metrics
CPU long tasks [median]12
CPU longest task duration353 ms
CPU last long task happens at4.304 s
Visual Metrics
First Visual Change [median]900 ms
Speed Index [median]1.427 s
Visual Complete 85% [median]1.500 s
Visual Complete 99% [median]3.466 s
Last Visual Change [median]3.466 s
Screenshot of run 2

Timings Summary

Metricminmedianmeanmax
Visual Metrics
FirstVisualChange833 ms900 ms878 ms900 ms
LastVisualChange3.400 s3.466 s3.467 s3.534 s
SpeedIndex1.389 s1.427 s1.434 s1.485 s
LargestImage900 ms900 ms944 ms1.033 s
Heading833 ms900 ms878 ms900 ms
LargestContentfulPaint1.433 s1.500 s1.489 s1.534 s
LastMeaningfulPaint1.433 s1.500 s1.489 s1.534 s
VisualReadiness2.500 s2.633 s2.589 s2.634 s
VisualComplete851.433 s1.500 s1.489 s1.534 s
VisualComplete951.433 s1.500 s1.489 s1.534 s
VisualComplete992.000 s3.466 s3.000 s3.534 s
Google Web Vitals
Time To First Byte (TTFB)489 ms490 ms495 ms505 ms
Largest Contentful Paint (LCP)1.440 s1.496 s1.481 s1.508 s
First Contentful Paint (FCP)852 ms876 ms871 ms884 ms
Cumulative Layout Shift (CLS)0000
More metrics
firstPaint852 ms876 ms871 ms884 ms
loadEventEnd3.473 s3.550 s3.558 s3.652 s
User Timing
mwStartup1.052 s1.096 s1.082 s1.099 s
CPU
Total Blocking Time1.540 s1.546 s1.548 s1.559 s
Max Potential FID335 ms350 ms346 ms353 ms
CPU long tasks 11121212
CPU last long task happens at4.231 s4.304 s4.302 s4.371 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
0.8 sCPU Long Task duration 119 ms
0.9 sFirst Contentful Paint 884 msFirst Visual Change 900 msLargest Image 900 msHeading 900 ms
1 s
1.1 smwStartup 1.052 s
1.2 sCPU Long Task duration 335 ms
1.3 s
1.4 s
1.5 sLCP <UL> 1.496 sVisual Complete 85% 1.500 sVisual Complete 95% 1.500 s
1.6 sCPU Long Task duration 260 ms
1.7 s
1.8 sCPU Long Task duration 304 ms
1.9 s
2 sVisual Complete 99% 2.000 s
2.1 s
2.2 sCPU Long Task duration 256 ms
2.4 s
2.5 sCPU Long Task duration 96 ms
2.7 sCPU Long Task duration 207 ms
2.9 sDOM Content Loaded Time 2.855 sCPU Long Task duration 192 ms
3.2 sCPU Long Task duration 106 ms
3.3 sCPU Long Task duration 118 ms
3.4 sLast Visual Change 3.400 s
3.5 sPage Load Time 3.468 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 8.1.1.

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://m.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://m.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://m.mediawiki.org/static/images/mobile/copyright/mediawikiwiki-wordmark.svg
  • https://m.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 12 CPU long tasks with the total of 2.206 s. The total blocking time is 1.540 s and 1 long task before first contentful paint with total time of 116 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
  • unknown
  • self
  • self
  • unknown
  • self
  • self
  • self
  • self
  • Avoid doing redirects (assetsRedirects)The page has 2 redirects. 1 of the redirects are from the base domain, please fix them! 1 request are from other domains, it could be 3rd-party assets doing unnecessary redirects. :(80
    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://m.mediawiki.org/wiki/Special:CentralAutoLogin/start?type=script&usesul3=0
  • https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • Avoid extra requests by setting cache headers (cacheHeaders)The page has 13 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 26.8 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://m.mediawiki.org/wiki/Special:CentralAutoLogin/start?type=script&usesul3=0
  • https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • https://auth.wikimedia.org/loginwiki/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://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva
  • https://m.mediawiki.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=minerva
  • https://m.mediawiki.org/w/api.php?action=webapp-manifest
  • Total JavaScript size shouldn't be too big (javascriptSize)The total JavaScript transfer size is 398.6 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://m.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva 19.3 KB58.7 KB
    https://m.mediawiki.org/w/load.php...ki.org/w/load.php 2.4 KB3.6 KB
    https://m.mediawiki.org/w/load.php...ki.org/w/load.php 338.2 KB1.4 MB
    https://m.mediawiki.org/w/load.php...ki.org/w/load.php 8.3 KB56.3 KB
    https://m.mediawiki.org/w/load.php...ki.org/w/load.php 19.8 KB112.7 KB
    https://auth.wikimedia.org/loginwiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn 1.2 KB254 B
    Make each CSS response small (optimalCssSize)https://m.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 29.4 kB (29378) 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://m.mediawiki.org/w/load.php...ki.org/w/load.php 28.7 KB230.1 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://m.mediawiki.org/wiki/How_to_contribute
  • https://m.mediawiki.org/wiki/Special:CentralAutoLogin/start?type=script&usesul3=0
  • https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • https://auth.wikimedia.org/loginwiki/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://m.mediawiki....How_to_contribute has a header content-security-policy-report-only that is 1461 characters long. https://m.mediawiki....ki.org/w/load.php has a header sourcemap that is 1061 characters long. 98
    Description: Do not send response headers that are too long.
    Offenders:
  • https://m.mediawiki.org/wiki/How_to_contribute
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • Avoid too many third party requests (thirdParty)The page do 33% requests to third party domains (12 requests and 26.8 kB). First party is 24 requests and 482.3 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 36 responses that sets a server header. 42
    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://m.mediawiki.org/wiki/How_to_contribute
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva
  • https://m.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva
  • https://m.mediawiki.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=minerva
  • https://m.mediawiki.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=minerva
  • https://m.mediawiki.org/static/images/mobile/copyright/mediawikiwiki-wordmark.svg
  • https://m.mediawiki.org/static/images/mobile/copyright/mediawikiwiki-wordmark.svg
  • 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://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.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://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/wiki/Special:CentralAutoLogin/start?type=script&usesul3=0
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://m.mediawiki.org/w/load.php...ki.org/w/load.php
  • https://auth.wikimedia.org/loginwiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • https://m.mediawiki.org/w/api.php?action=webapp-manifest
  • https://m.mediawiki.org/w/api.php?action=webapp-manifest
  • https://m.mediawiki.org/static/favicon/mediawiki.ico
  • https://m.mediawiki.org/static/favicon/mediawiki.ico
  • https://m.mediawiki.org/static/apple-touch/mediawiki.png
  • https://m.mediawiki.org/static/apple-touch/mediawiki.png
  • 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://m.mediawiki.org/wiki/How_to_contribute
  • 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://m.mediawiki.org/wiki/How_to_contribute
  • Page info

    Page info
    TitleHow to contribute - MediaWiki
    GeneratorMediaWiki 1.44.0-wmf.23
    Width360
    Height6221
    DOM elements729
    Avg DOM depth11
    Max DOM depth15
    Iframes0
    Script tags7
    Local storage1.0 MB
    Session storage0 b
    Network Information API4g
    Resource Hints
    dns-prefetch
    https://meta.wikimedia.org/
    https://m.mediawiki.org/wiki/auth.wikimedia.org
    preconnect
    https://upload.wikimedia.org/

    Technologies used to build the page.

    Data collected using Wappalyzer version 6.10.66. 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
    Apache Traffic Server 9.2.9100  Web servers
    HSTS 100  Security
    | Browser metrics | Visual Metrics | Largest Contentful Paint | Cumulative Layout Shift | Interaction To Next Paint | Long Aninimation Frames | Visual Elements | Server timings | 

    Data from run 2

    Visual Metrics

    Browser Metrics

    Google Web Vitals
    Time to first byte (TTFB)489 ms
    First Contentful Paint (FCP)884 ms
    Largest Contentful Paint (LCP)1.496 s
    Interaction to next paint (INP)272 ms
    Total Blocking Time (TBT)1.546 s
    First Contentful Paint info
    Elements that needed recalculate style before FCP96
    Time spent in recalculate style before FCP46.953 ms
    Extra timings
    TTFB489 ms
    First Paint884 ms
    Load Event End3.473 s
    Fully loaded4.040 s
    User Timing marks
    mwStartup1.052 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 typeUL
    Element/tag<ul class="mw-pt-languages-list"></ul>
    Render time 1.496 s
    Element render delay1.007 s
    TTFB489 ms
    Resource delay0 ms
    Resource load duration0 ms
    Elements that needed recalculate style before LCP356
    Time spent in recalculate style before LCP91.629 ms
    Load time0 ms
    Size (width*height)98982
    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.

    Interaction to Next Paint

    Interaction to Next Paint (INP) is a metric that try to measure responsiveness. It's useful if you are testing user journeys. Read more about Interaction to Next Paint.

    The measured latency was 272 ms.

    Event typepointerover
    Element typeA
    Element class namemw-pt-progress mw-pt-progress--high
    Event targetul.mw-pt-languages-list>li>a.mw-pt-progress.mw-pt-progress--high
    Load state when the event happenedloading

    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
    288.6 ms308.1 ms81.7 ms72 ms9.7 ms
    https://m.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%2CwikimediaEvents%7Cext.echo.centralauth%7Cext.translate.pagetranslation.uls%7Cext.uls.common%2Ci18n%2Clanguagenames%2Cmediawiki%2Cmessages%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Ci18n%2Culs%7Cjquery.uls.data%2Cgrid%7Cmediawiki.String%2CTitle%2CUri%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%7Cmobile.pagelist.styles%7Cmobile.pagesummary.styles%7Coojs-ui-windows.icons%7Cskins.minerva.scripts&skin=minerva&version=y3x57

    Invoker:  https://m.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%2CwikimediaEvents%7Cext.echo.centralauth%7Cext.translate.pagetranslation.uls%7Cext.uls.common%2Ci18n%2Clanguagenames%2Cmediawiki%2Cmessages%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Ci18n%2Culs%7Cjquery.uls.data%2Cgrid%7Cmediawiki.String%2CTitle%2CUri%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%7Cmobile.pagelist.styles%7Cmobile.pagesummary.styles%7Coojs-ui-windows.icons%7Cskins.minerva.scripts&skin=minerva&version=y3x57
    Invoker Type: classic-script
    Window attribution: self

    https://m.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: 4307

    https://m.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: 3233

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    275 ms28.6 ms314 ms0 ms314 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    246.3 ms27.5 ms285.6 ms285.5 ms0.1 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    206.3 ms19.2 ms245.6 ms244.2 ms1.4 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    191.7 ms71.1 ms197.8 ms184 ms13.8 ms
    https://m.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: 4307

    https://m.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: 3233

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    143 ms44.9 ms178.8 ms133.8 ms45 ms
    https://m.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: 4307

    https://m.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: 3233

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    121.8 ms171.8 ms0 ms0 ms0 ms
    https://m.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: 19333

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    90.5 ms138.8 ms21.9 ms21.9 ms0 ms
    https://m.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%2CwikimediaEvents%7Cext.echo.centralauth%7Cext.translate.pagetranslation.uls%7Cext.uls.common%2Ci18n%2Clanguagenames%2Cmediawiki%2Cmessages%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Ci18n%2Culs%7Cjquery.uls.data%2Cgrid%7Cmediawiki.String%2CTitle%2CUri%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%7Cmobile.pagelist.styles%7Cmobile.pagesummary.styles%7Coojs-ui-windows.icons%7Cskins.minerva.scripts&skin=minerva&version=y3x57

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 495064

    https://m.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%2CwikimediaEvents%7Cext.echo.centralauth%7Cext.translate.pagetranslation.uls%7Cext.uls.common%2Ci18n%2Clanguagenames%2Cmediawiki%2Cmessages%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Ci18n%2Culs%7Cjquery.uls.data%2Cgrid%7Cmediawiki.String%2CTitle%2CUri%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%7Cmobile.pagelist.styles%7Cmobile.pagesummary.styles%7Coojs-ui-windows.icons%7Cskins.minerva.scripts&skin=minerva&version=y3x57

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 495064

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    88.3 ms265.3 ms108.8 ms0 ms108.8 ms
    https://m.mediawiki.org/wiki/How_to_contribute

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

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    62 ms140 ms5.4 ms4.3 ms1.1 ms
    https://m.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%2CwikimediaEvents%7Cext.echo.centralauth%7Cext.translate.pagetranslation.uls%7Cext.uls.common%2Ci18n%2Clanguagenames%2Cmediawiki%2Cmessages%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Ci18n%2Culs%7Cjquery.uls.data%2Cgrid%7Cmediawiki.String%2CTitle%2CUri%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%7Cmobile.pagelist.styles%7Cmobile.pagesummary.styles%7Coojs-ui-windows.icons%7Cskins.minerva.scripts&skin=minerva&version=y3x57

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 495064

    https://m.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%2CwikimediaEvents%7Cext.echo.centralauth%7Cext.translate.pagetranslation.uls%7Cext.uls.common%2Ci18n%2Clanguagenames%2Cmediawiki%2Cmessages%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Ci18n%2Culs%7Cjquery.uls.data%2Cgrid%7Cmediawiki.String%2CTitle%2CUri%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%7Cmobile.pagelist.styles%7Cmobile.pagesummary.styles%7Coojs-ui-windows.icons%7Cskins.minerva.scripts&skin=minerva&version=y3x57

    Forced Style And Layout Duration: 11 ms

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 495064

    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.

    Visual Elements

    NameDisplay TimeX YWidthHeight
    LargestImage (mediawikiwiki-wordmark.svg)900 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;">
    Heading900 ms 16 75 328 37
    <h1 id="firstHeading" class="firstHeading mw-first-heading"></h1>
    LargestContentfulPaint1.500 s 16 208 328 1389
    <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 requests36
    Total domains4
    Total transfer size497.2 KB
    Total content size2.0 MB
    Responses missing compression8
    Number of cookies2
    Third party cookies0
    Requests per response code
    20034
    3022

    Largest assets on the page (by transfer size)

    Requests and sizes per content type

    ContentHeader SizeTransfer SizeContent SizeRequests
    html0 b22.4 KB81.2 KB1
    css0 b30.0 KB231.1 KB2
    javascript0 b389.2 KB1.6 MB6
    image0 b32.4 KB23.1 KB11
    svg0 b13.5 KB7.0 KB12
    json0 b1.4 KB263 B1
    favicon0 b8.2 KB15.0 KB1
    Total0 b497.2 KB2.0 MB34

    Data per domain

    DomainTotal download timeTransfer SizeContent SizeRequests
    m.mediawiki.org3.969 s471.0 KB1.9 MB24
    upload.wikimedia.org3.358 s24.9 KB16.3 KB10
    login.wikimedia.org188 msN/A0 b1
    auth.wikimedia.org207 ms1.2 KB254 B1

    Expires and last modified statistics

    typeminmedianmax
    Expires0 seconds2 weeks1 year
    Last modified2 hours37 weeks2 years

    Requests loaded after onLoad event

    Included requests done after load event end.

    ContentTransfer SizeRequests
    html0 b0
    css0 b0
    javascript0 b0
    image7.5 KB1
    font0 b0
    json1.4 KB1
    favicon8.2 KB1
    Total17.1 KB3

    Requests loaded after onContentLoad

    Includes requests done after DOM content loaded.

    ContentTransfer SizeRequests
    html0 b0
    css0 b0
    javascript29.3 KB3
    image7.5 KB1
    font0 b0
    json1.4 KB1
    favicon8.2 KB1
    Total46.4 KB7

    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 1546
    Max Potential First Input Delay 335
    Long Tasks before First Paint1119
    Long Tasks before First Contentful Paint1119
    Long Tasks before Largest Contentful Paint2454
    Long Tasks after Load Event End1172
    Total Long Tasks112165

    CPU last long task happened at 4.231 s

    Individual Long Tasks

    namestartTimedurationcontainerIdcontainerNamecontainerSrccontainerType
    unknown758119window
    unknown1152335window
    unknown1508260window
    unknown1799304window
    self2158256window
    self241496window
    self2629207window
    self2885192window
    self3108106window
    self3249118window
    self4231172window

    CPU time spent

    Calculated using Tracium.

    Categories (ms)
    parseHTML136
    styleLayout1185
    paintCompositeRender86
    scriptParseCompile17
    scriptEvaluation1213
    garbageCollection22
    other739
    Events (ms)
    FunctionCall1045
    Layout870
    RunTask508
    UpdateLayoutTree307
    v8.run86
    ParseHTML83
    CpuProfiler::StartProfiling80
    Paint66
    HTMLDocumentParser::MaybeFetchQueuedPreloads45
    PrePaint34
    V8.HandleInterrupts24
    DocumentLoader::CommitNavigation23
    ParseAuthorStyleSheet21
    Layerize19
    RunMicrotasks19
    v8.compile17
    PaintImage15
    DecodedDataDocumentParser::AppendBytes14

    Time spent per request

    URLCPU time (ms)
    https://m.mediawiki.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva979
    https://m.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%2CwikimediaEvents%7Cext.echo.centralauth%7Cext.translate.pagetranslation.uls%7Cext.uls.common%2Ci18n%2Clanguagenames%2Cmediawiki%2Cmessages%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Ci18n%2Culs%7Cjquery.uls.data%2Cgrid%7Cmediawiki.String%2CTitle%2CUri%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%7Cmobile.pagelist.styles%7Cmobile.pagesummary.styles%7Coojs-ui-windows.icons%7Cskins.minerva.scripts&skin=minerva&version=y3x57378
    https://m.mediawiki.org/wiki/How_to_contribute12