Page summary

https://en.m.wikipedia.org/wiki/Barack_Obama

Tested 2025-09-01 02:23:02 using Chrome 139.0.7258.127 (runtime settings).

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

Summary

MetricValue
Page metrics
Performance Score73
Total Page Transfer Size613.8 KB
Requests32
Timing metrics
TTFB [median]503 ms
First Paint [median]1.104 s
Fully Loaded [median]4.789 s
Google Web Vitals
TTFB [median]503 ms
First Contentful Paint (FCP) [median]1.104 s
Largest Contentful Paint (LCP) [median]1.492 s
Cumulative Layout Shift (CLS) [median]0.00
Total Blocking Time [median]1.643 s
Max Potential FID [median]588 ms
CPU metrics
CPU long tasks [median]14
CPU longest task duration589 ms
CPU last long task happens at4.093 s
Visual Metrics
First Visual Change [median]1.134 s
Speed Index [median]2.840 s
Visual Complete 85% [median]4.267 s
Visual Complete 99% [median]12.434 s
Last Visual Change [median]12.467 s
Screenshot of run 1

Timings Summary

Metricminmedianmeanmax
Visual Metrics
FirstVisualChange1.100 s1.134 s1.123 s1.134 s
LastVisualChange12.467 s12.467 s12.467 s12.467 s
SpeedIndex2.802 s2.840 s2.851 s2.912 s
LargestImage1.100 s1.134 s1.123 s1.134 s
Heading4.100 s4.100 s4.100 s4.100 s
LargestContentfulPaint4.100 s4.100 s4.100 s4.100 s
LastMeaningfulPaint4.100 s4.100 s4.100 s4.100 s
VisualReadiness11.333 s11.333 s11.344 s11.367 s
VisualComplete854.234 s4.267 s4.256 s4.267 s
VisualComplete954.234 s4.267 s4.256 s4.267 s
VisualComplete9912.434 s12.434 s12.434 s12.434 s
Google Web Vitals
Time To First Byte (TTFB)489 ms503 ms499 ms504 ms
Largest Contentful Paint (LCP)1.488 s1.492 s1.493 s1.500 s
First Contentful Paint (FCP)1.088 s1.104 s1.104 s1.120 s
Cumulative Layout Shift (CLS)0000
More metrics
firstPaint1.088 s1.104 s1.104 s1.120 s
loadEventEnd4.222 s4.231 s4.232 s4.244 s
User Timing
mwStartup1.261 s1.269 s1.272 s1.286 s
mwCentralNoticeBanner3.996 s3.996 s4.004 s4.020 s
CPU
Total Blocking Time1.635 s1.643 s1.657 s1.693 s
Max Potential FID579 ms588 ms585 ms589 ms
CPU long tasks 13141415
CPU last long task happens at4.085 s4.093 s4.095 s4.108 s
| Waterfall | | Download HAR | 

Waterfall

Run 1 SpeedIndex median

| Video | Download | 

Video

Download video
| Filmstrip | 

Filmstrip

Use--filmstrip.showAll to show all filmstrips.

0 s
1 sCPU Long Task duration 123 ms
1.2 sFirst Contentful Paint 1.104 sFirst Visual Change 1.134 sLargest Image 1.134 s
1.3 smwStartup 1.269 s
1.4 sCPU Long Task duration 151 ms
1.5 sLCP <P> 1.492 s
1.6 sCPU Long Task duration 76 ms
1.7 s
1.8 sCPU Long Task duration 217 ms
2.1 sCPU Long Task duration 54 msCPU Long Task duration 225 ms
2.3 sCPU Long Task duration 95 ms
2.4 sCPU Long Task duration 59 ms
2.5 sDOM Content Loaded Time 2.472 s
2.6 sCPU Long Task duration 75 ms
2.7 sCPU Long Task duration 579 ms
3.3 sCPU Long Task duration 432 ms
3.8 sCPU Long Task duration 216 ms
4 s
4.1 smwCentralNoticeBanner 4.020 sCPU Long Task duration 54 msHeading 4.100 s
4.2 sCPU Long Task duration 110 ms
4.3 sPage Load Time 4.241 sVisual Complete 85% 4.267 sVisual Complete 95% 4.267 s
4.4 s
4.5 s
4.6 s
4.7 s
4.8 sFully Loaded 4.789 s
5.2 s
12.5 sVisual Complete 99% 12.434 sLast Visual Change 12.467 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 (73)

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.m.wikipedia.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://en.m.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.m.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg
  • https://en.m.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-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 14 CPU long tasks with the total of 2.466 s. The total blocking time is 1.693 s and 1 long task before first contentful paint with total time of 123 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
  • self
  • self
  • self
  • unknown
  • self
  • self
  • self
  • self
  • self
  • unknown
  • self
  • Avoid doing redirects (assetsRedirects)The page has 3 redirects. 1 of the redirects are from the base domain, please fix them! 2 requests are from other domains, it could be 3rd-party assets doing unnecessary redirects. :(70
    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.m.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script&usesul3=1&urlversion=2
  • https://meta.wikimedia.org/w/index.php...a.org/w/index.php
  • https://auth.wikimedia.org/loginwiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • Avoid extra requests by setting cache headers (cacheHeaders)The page has 10 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 123.7 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/8/8d/President_Barack_Obama..._Barack_Obama.jpg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Barack_Obama_signature...signature.svg.png
  • https://en.m.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script&usesul3=1&urlversion=2
  • https://meta.wikimedia.org/w/index.php...a.org/w/index.php
  • https://auth.wikimedia.org/loginwiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • https://meta.m.wikimedia.org/w/index.php...a.org/w/index.php
  • https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • https://upload.wikimedia.org/wikipedia/foundation/2/20/CloseWindow19x19.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/9/9d/WLM_Logo_Deutschland_(...)_negativ.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/d/de/WLM-Banner-Bg-2017.jpg...anner-Bg-2017.jpg
  • 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.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva
  • https://en.m.wikipedia.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=minerva
  • https://en.m.wikipedia.org/w/api.php?action=webapp-manifest
  • Always compress text content (compressAssets)The page has 1 request that are served uncompressed. You could save a lot of bytes by sending them compressed instead.90
    Description: In the early days of the Internet there were browsers that didn't support compressing (gzipping) text content. They do now. Make sure you compress HTML, JSON, JavaScript, CSS and SVG. It will save bytes for the user; making the page load faster and use less bandwith.
    Offenders:
    URLTransfer sizeContent size
    https://meta.m.wikimedia.org/w/index.php...a.org/w/index.php 2.6 KB5.2 KB
    Total JavaScript size shouldn't be too big (javascriptSize)The total JavaScript transfer size is 223.3 kB and the uncompressed size is 855.7 kB. This is quite large. 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.m.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva 20.7 KB62.3 KB
    https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.gadget.switcher&skin=minerva&version=hlzwp 1.5 KB1.3 KB
    https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php 192.0 KB766.6 KB
    https://meta.m.wikimedia.org/w/index.php...a.org/w/index.php 2.6 KB5.2 KB
    https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn 1.4 KB254 B
    Make each CSS response small (optimalCssSize)https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.cite.styles%7Cext.phonos.icons%2Cstyles%7Cext.relatedArticles.styles%7Cext.tmh.player.styles%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cmediawiki.hlist%7Cmobile.init.styles%7Cskins.minerva.amc.styles%7Cskins.minerva.codex.styles%7Cskins.minerva.content.styles.images%7Cskins.minerva.icons%2Cstyles%7Cwikibase.client.init&only=styles&skin=minerva size is 21.7 kB (21653) 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.m.wikipedia.org/w/load.php...ia.org/w/load.php 21.1 KB154.4 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://en.m.wikipedia.org/wiki/Barack_Obama
  • https://en.m.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script&usesul3=1&urlversion=2
  • https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • Best practice advice (89)

    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://en.m.wikiped...ia.org/w/load.php has a header sourcemap that is 1363 characters long. 99
    Description: Do not send response headers that are too long.
    Offenders:
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • Avoid unnecessary headers (unnecessaryHeaders)There are 21 responses that sets both a max-age and expires header. There are 32 responses that sets a server header. 47
    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.m.wikipedia.org/wiki/Barack_Obama
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva
  • https://en.m.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva
  • https://en.m.wikipedia.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=minerva
  • https://en.m.wikipedia.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=minerva
  • https://upload.wikimedia.org/wikipedia/commons/thumb/8/8d/President_Barack_Obama..._Barack_Obama.jpg
  • https://en.m.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg
  • https://en.m.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Barack_Obama_signature...signature.svg.png
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.gadget.switcher&skin=minerva&version=hlzwp
  • https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.gadget.switcher&skin=minerva&version=hlzwp
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script&usesul3=1&urlversion=2
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://meta.wikimedia.org/w/index.php...a.org/w/index.php
  • https://auth.wikimedia.org/loginwiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • https://meta.m.wikimedia.org/w/index.php...a.org/w/index.php
  • https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • https://upload.wikimedia.org/wikipedia/foundation/2/20/CloseWindow19x19.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/9/9d/WLM_Logo_Deutschland_(...)_negativ.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/d/de/WLM-Banner-Bg-2017.jpg...anner-Bg-2017.jpg
  • https://en.m.wikipedia.org/w/api.php?action=webapp-manifest
  • https://en.m.wikipedia.org/w/api.php?action=webapp-manifest
  • https://en.m.wikipedia.org/static/favicon/wikipedia.ico
  • https://en.m.wikipedia.org/static/favicon/wikipedia.ico
  • https://en.m.wikipedia.org/static/apple-touch/wikipedia.png
  • https://en.m.wikipedia.org/static/apple-touch/wikipedia.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://en.m.wikipedia.org/wiki/Barack_Obama
  • 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.m.wikipedia.org/wiki/Barack_Obama
  • Page info

    Page info
    TitleBarack Obama - Wikipedia
    GeneratorMediaWiki 1.45.0-wmf.16
    Width361
    Height6840
    DOM elements13827
    Avg DOM depth14
    Max DOM depth23
    Iframes0
    Script tags7
    Local storage669.6 KB
    Session storage0 b
    Network Information API4g
    Resource Hints
    dns-prefetch
    https://meta.wikimedia.org/
    https://en.m.wikipedia.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
    Apache Traffic Server 9.2.11100  Web servers
    HSTS 100  Security
    | Browser metrics | Visual Metrics | Largest Contentful Paint | Cumulative Layout Shift | Long Aninimation Frames | Visual Elements | Server timings | 

    Data from run 1

    Visual Metrics

    Visual Metrics
    First Visual Change1.134 s
    Speed Index2.840 s
    Largest Image1.134 s
    Heading4.100 s
    LargestContentfulPaint4.100 s
    Last Meaningful Paint4.100 s
    Largest Contentful Paint4.100 s
    Visual Complete 85%4.267 s
    Visual Complete 95%4.267 s
    Visual Complete 99%12.434 s
    Last Visual Change12.467 s
    Visual Readiness11.333 s

    Browser Metrics

    Google Web Vitals
    Time to first byte (TTFB)504 ms
    First Contentful Paint (FCP)1.104 s
    Largest Contentful Paint (LCP)1.492 s
    Total Blocking Time (TBT)1.693 s
    First Contentful Paint info
    Elements that needed recalculate style before FCP101
    Time spent in recalculate style before FCP45.883 ms
    Extra timings
    TTFB504 ms
    First Paint1.104 s
    Load Event End4.244 s
    Fully loaded4.789 s
    User Timing marks
    mwStartup1.269 s
    mwCentralNoticeBanner4.020 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 1.492 s
    Element render delay988 ms
    TTFB504 ms
    Resource delay0 ms
    Resource load duration0 ms
    Elements that needed recalculate style before LCP412
    Time spent in recalculate style before LCP128.109 ms
    Load time0 ms
    Size (width*height)67275
    DOM path
    div#mw-mf-viewport > div#mw-mf-page-center > main#content > div#bodyContent > div#mw-content-text > div:eq(0) > section#mf-section-0 > p:eq(1)> div#mw-mf-viewport > div#mw-mf-page-center > main#content > div#bodyContent > div#mw-content-text > div:eq(0) > section#mf-section-0 > p:eq(1)>
    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
    532.6 ms590.8 ms3.4 ms3.4 ms0 ms
    https://en.m.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.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.cx.model%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%2CxLab%7Cext.eventLogging.metricsPlatform%7Cext.growthExperiments.SuggestedEditSession%7Cext.phonos.init%7Cext.quicksurveys.init%2Clib%7Cext.relatedArticles.readMore.bootstrap%7Cext.scribunto.logs%7Cext.tmh.OgvJsSupport%2Cplayer%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.xLab%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Cspinner%7Cjquery.spinner.styles%7Cmediawiki.DateFormatter%2CForeignApi%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagesummary.styles%7Cmw.cx.SiteMapper%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=lgpdt

    Forced Style And Layout Duration: 27 ms

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 285462

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    386.6 ms46.1 ms420.5 ms411.8 ms8.7 ms
    https://en.m.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.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.cx.model%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%2CxLab%7Cext.eventLogging.metricsPlatform%7Cext.growthExperiments.SuggestedEditSession%7Cext.phonos.init%7Cext.quicksurveys.init%2Clib%7Cext.relatedArticles.readMore.bootstrap%7Cext.scribunto.logs%7Cext.tmh.OgvJsSupport%2Cplayer%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.xLab%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Cspinner%7Cjquery.spinner.styles%7Cmediawiki.DateFormatter%2CForeignApi%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagesummary.styles%7Cmw.cx.SiteMapper%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=lgpdt

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 285462

    https://en.m.wikipedia.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://en.m.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.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.cx.model%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%2CxLab%7Cext.eventLogging.metricsPlatform%7Cext.growthExperiments.SuggestedEditSession%7Cext.phonos.init%7Cext.quicksurveys.init%2Clib%7Cext.relatedArticles.readMore.bootstrap%7Cext.scribunto.logs%7Cext.tmh.OgvJsSupport%2Cplayer%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.xLab%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Cspinner%7Cjquery.spinner.styles%7Cmediawiki.DateFormatter%2CForeignApi%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagesummary.styles%7Cmw.cx.SiteMapper%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=lgpdt

    Forced Style And Layout Duration: 1 ms

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 285462

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

    Forced Style And Layout Duration: 40 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
    228 ms226.7 ms52.9 ms52 ms0.9 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    214 ms228.8 ms46.7 ms38.1 ms8.6 ms
    https://en.m.wikipedia.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://en.m.wikipedia.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
    169.9 ms244.1 ms3.3 ms3.2 ms0.1 ms
    https://en.m.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.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.cx.model%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%2CxLab%7Cext.eventLogging.metricsPlatform%7Cext.growthExperiments.SuggestedEditSession%7Cext.phonos.init%7Cext.quicksurveys.init%2Clib%7Cext.relatedArticles.readMore.bootstrap%7Cext.scribunto.logs%7Cext.tmh.OgvJsSupport%2Cplayer%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.xLab%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Cspinner%7Cjquery.spinner.styles%7Cmediawiki.DateFormatter%2CForeignApi%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagesummary.styles%7Cmw.cx.SiteMapper%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=lgpdt

    Forced Style And Layout Duration: 31 ms

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 285462

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    164.5 ms467.5 ms111.8 ms0 ms111.8 ms
    https://en.m.wikipedia.org/wiki/Barack_Obama

    Invoker:  https://en.m.wikipedia.org/wiki/Barack_Obama
    Invoker Type: classic-script
    Window attribution: self

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    100.5 ms25 ms139.6 ms0 ms139.6 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    67.3 ms115.8 ms58.2 ms44 ms14.2 ms
    https://en.m.wikipedia.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://en.m.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.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.cx.model%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%2CxLab%7Cext.eventLogging.metricsPlatform%7Cext.growthExperiments.SuggestedEditSession%7Cext.phonos.init%7Cext.quicksurveys.init%2Clib%7Cext.relatedArticles.readMore.bootstrap%7Cext.scribunto.logs%7Cext.tmh.OgvJsSupport%2Cplayer%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.xLab%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Cspinner%7Cjquery.spinner.styles%7Cmediawiki.DateFormatter%2CForeignApi%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagesummary.styles%7Cmw.cx.SiteMapper%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=lgpdt

    Invoker:  #document.onDOMContentLoaded
    Invoker Type: event-listener
    Source Function Name:  completed
    Window attribution: self
    Source char position: 288305

    https://en.m.wikipedia.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
    59.8 ms109.8 ms0 ms0 ms0 ms
    https://en.m.wikipedia.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
    21 ms38.8 ms60.1 ms60 ms0.1 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 (wikipedia-wordmark-en.svg)1.134 s 53 18 120 18
    <img src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" alt="Wikipedia" width="120" height="18" style="width: 7.5em; height: 1.125em;">
    Heading4.100 s 16 212 328 37
    <h1 id="firstHeading" class="firstHeading mw-first-heading"></h1>
    LargestContentfulPaint4.100 s 16 449 328 219
    <p></p>
    | 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 requests32
    Total domains6
    Total transfer size613.8 KB
    Total content size2.4 MB
    Responses missing compression6
    Number of cookies12
    Third party cookies0
    Requests per response code
    20029
    3023

    Largest assets on the page (by transfer size)

    Requests and sizes per content type

    ContentHeader SizeTransfer SizeContent SizeRequests
    html0 b234.6 KB1.3 MB1
    css0 b22.7 KB156.4 KB2
    javascript0 b218.1 KB835.6 KB5
    image0 b118.8 KB112.9 KB6
    svg0 b16.1 KB10.4 KB13
    json0 b1.7 KB263 B1
    favicon0 b1.7 KB2.7 KB1
    Total0 b613.8 KB2.4 MB29

    Data per domain

    DomainTotal download timeTransfer SizeContent SizeRequests
    en.m.wikipedia.org4.575 s492.9 KB2.3 MB23
    upload.wikimedia.org1.635 s116.9 KB111.6 KB5
    meta.wikimedia.org97 msN/A0 b1
    auth.wikimedia.org190 msN/A0 b1
    meta.m.wikimedia.org214 ms2.6 KB5.2 KB1
    login.wikimedia.org191 ms1.4 KB254 B1

    Expires and last modified statistics

    typeminmedianmax
    Expires0 seconds4 weeks1 year
    Last modified4 minutes23 weeks1 year

    Requests loaded after onLoad event

    Included requests done after load event end.

    ContentTransfer SizeRequests
    html0 b0
    css0 b0
    javascript0 b0
    image2.0 KB1
    font0 b0
    json1.7 KB1
    favicon1.7 KB1
    Total5.4 KB3

    Requests loaded after onContentLoad

    Includes requests done after DOM content loaded.

    ContentTransfer SizeRequests
    html0 b0
    css0 b0
    javascript3.9 KB2
    image43.3 KB4
    font0 b0
    json1.7 KB1
    favicon1.7 KB1
    Total50.6 KB8

    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 1693
    Max Potential First Input Delay 579
    Long Tasks before First Paint1123
    Long Tasks before First Contentful Paint1123
    Long Tasks before Largest Contentful Paint2274
    Long Tasks after Load Event End00
    Total Long Tasks142466

    CPU last long task happened at 4.108 s

    Individual Long Tasks

    namestartTimedurationcontainerIdcontainerNamecontainerSrccontainerType
    unknown975123window
    unknown1330151window
    unknown160076window
    self1786217window
    self200454window
    self2061225window
    unknown228895window
    self239359window
    self250375window
    self2641579window
    self3282432window
    self3740216window
    unknown402854window
    self4108110window

    CPU time spent

    Calculated using Tracium.

    Categories (ms)
    parseHTML392
    styleLayout565
    paintCompositeRender88
    scriptParseCompile12
    scriptEvaluation1777
    garbageCollection28
    other983
    Events (ms)
    FunctionCall1605
    RunTask570
    ParseHTML374
    UpdateLayoutTree322
    Layout216
    DocumentLoader::BodyLoadingFinished99
    DecodedDataDocumentParser::AppendBytes97
    v8.run80
    CpuProfiler::StartProfiling80
    Paint45
    PaintImage32
    PrePaint31
    DocumentLoader::CommitNavigation29
    V8.HandleInterrupts26
    Layerize22
    RunMicrotasks19
    ParseAuthorStyleSheet17
    DocumentLoader::BodyDataReceivedImpl16
    DocumentLoader::FinishedLoading14
    V8.BytecodeBudgetInterrupt14
    v8.compile12
    Commit11
    EventDispatch11

    Time spent per request

    URLCPU time (ms)
    https://en.m.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva1163
    https://en.m.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.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.cx.model%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%2CxLab%7Cext.eventLogging.metricsPlatform%7Cext.growthExperiments.SuggestedEditSession%7Cext.phonos.init%7Cext.quicksurveys.init%2Clib%7Cext.relatedArticles.readMore.bootstrap%7Cext.scribunto.logs%7Cext.tmh.OgvJsSupport%2Cplayer%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.xLab%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Cspinner%7Cjquery.spinner.styles%7Cmediawiki.DateFormatter%2CForeignApi%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagesummary.styles%7Cmw.cx.SiteMapper%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=lgpdt982
    https://en.m.wikipedia.org/wiki/Barack_Obama17
    https://meta.wikimedia.org/w/index.php?title=Special:BannerLoader&campaign=wlm_2025_de&banner=wlm_2025_de&uselang=en&debug=false16