Page summary

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

Tested 2025-01-18 01:18:54 using Chrome 131.0.6778.85 (script).(runtime settings).

Test visiting multiple pages

First hit the portal page with an empty browser cache and then visit Main_Page

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

Summary

MetricValue
Page metrics
Performance Score74
Total Page Transfer Size642.5 KB
Requests40
Timing metrics
TTFB [median]228 ms
First Paint [median]549 ms
Fully Loaded [median]2.813 s
Google Web Vitals
TTFB [median]228 ms
First Contentful Paint (FCP) [median]549 ms
Largest Contentful Paint (LCP) [median]865 ms
Cumulative Layout Shift (CLS) [median]0.00
Interaction To Next Paint (INP) [median]104 ms
Total Blocking Time [median]823 ms
Max Potential FID [median]357 ms
CPU metrics
CPU long tasks [median]11
CPU longest task duration372 ms
CPU last long task happens at3.636 s
Visual Metrics
First Visual Change [median]567 ms
Speed Index [median]935 ms
Visual Complete 85% [median]867 ms
Visual Complete 99% [median]900 ms
Last Visual Change [median]9.233 s
Screenshot of run 2

Timings Summary

Metricminmedianmeanmax
Visual Metrics
FirstVisualChange533 ms567 ms556 ms567 ms
LastVisualChange7.033 s9.233 s8.511 s9.267 s
SpeedIndex911 ms935 ms1.037 s1.266 s
LargestImage867 ms867 ms878 ms900 ms
Heading867 ms867 ms878 ms900 ms
LargestContentfulPaint867 ms867 ms878 ms900 ms
LastMeaningfulPaint867 ms867 ms878 ms900 ms
VisualReadiness6.466 s8.666 s7.955 s8.734 s
VisualComplete85867 ms867 ms878 ms900 ms
VisualComplete95867 ms900 ms2.922 s7.000 s
VisualComplete99867 ms900 ms2.922 s7.000 s
Google Web Vitals
Time To First Byte (TTFB)227 ms228 ms228 ms228 ms
Largest Contentful Paint (LCP)859 ms865 ms864 ms867 ms
First Contentful Paint (FCP)531 ms549 ms543 ms550 ms
Cumulative Layout Shift (CLS)0000
More metrics
firstPaint531 ms549 ms543 ms550 ms
loadEventEnd1.560 s2.391 s2.138 s2.462 s
User Timing
mwStartup530 ms538 ms536 ms541 ms
CPU
Total Blocking Time810 ms823 ms832 ms863 ms
Max Potential FID223 ms357 ms317 ms372 ms
CPU long tasks 10111112
CPU last long task happens at3.585 s3.636 s3.625 s3.653 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
0.5 sCPU Long Task duration 63 ms
0.6 sCPU Long Task duration 50 msmwStartup 530 msFirst Contentful Paint 531 msFirst Visual Change 533 ms
0.7 s
0.8 sCPU Long Task duration 113 ms
0.9 sLCP <P> 867 msCPU Long Task duration 73 msVisual Complete 85% 900 msVisual Complete 95% 900 msVisual Complete 99% 900 msLargest Image 900 msHeading 900 ms
1 s
1.1 sCPU Long Task duration 357 ms
1.2 s
1.3 s
1.6 sCPU Long Task duration 194 ms
1.8 sCPU Long Task duration 66 msDOM Content Loaded Time 1.780 s
2 sCPU Long Task duration 115 ms
2.1 sCPU Long Task duration 175 ms
2.3 sCPU Long Task duration 61 ms
2.4 sPage Load Time 2.387 s
2.5 s
2.6 s
2.9 sFully Loaded 2.813 s
3.3 s
3.6 sCPU Long Task duration 119 ms
9.3 sLast Visual Change 9.267 s
| Performance advice | Best practice advice | Privacy advice | Page info | Technologies | 

Coach

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

I am the coach

Coach score

Performance advice (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://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 3 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.70
    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://upload.wikimedia.org/wikipedia/commons/thumb/8/85/Volc%C3%A1n_Aucanquilc...2-10%2C_DD_11.JPG
  • 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 10 CPU long tasks with the total of 1.380 s. The total blocking time is 863 ms and 1 long task before first contentful paint with total time of 67 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://en.m.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script
  • Avoid extra requests by setting cache headers (cacheHeaders)The page has 20 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 361.1 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/a/aa/Freston_site_map_and_c...and_cropmarks.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/8/86/Mingxing_Film_Company_...oduction_logo.jpg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/d/de/David_Lynch_at_the_199...0_Emmy_Awards.jpg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/7/71/Ereveld_Tanggok.jpg/33...eveld_Tanggok.jpg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/8/85/Volc%C3%A1n_Aucanquilc...2-10%2C_DD_11.JPG
  • https://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/62px-Commons-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/a/a6/MediaWiki-2020-icon.sv...2020-icon.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/7/75/Wikimedia_Community_Lo...nity_Logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikibooks-logo.svg/70p...ooks-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/94px...data-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/102p...news-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikiquote-logo.svg/70p...uote-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/70...urce-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikispecies-logo.svg/7...cies-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Wikiversity_logo_2017....logo_2017.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Wikivoyage-Logo-v3-ico...o-v3-icon.svg.png
  • https://upload.wikimedia.org/wikipedia/en/thumb/0/06/Wiktionary-logo-v2.svg/70px...y-logo-v2.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Wiktionary-logo.svg/82...nary-logo.svg.png
  • https://en.m.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script
  • https://login.wikimedia.org/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://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
  • Total JavaScript size shouldn't be too big (javascriptSize)The total JavaScript transfer size is 235.5 kB and the uncompressed size is 951.4 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 20.3 KB60.8 KB
    https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.gadget.switcher&skin=minerva&version=1u62d 1.5 KB1.3 KB
    https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php 180.1 KB740.1 KB
    https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php 26.9 KB126.6 KB
    https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn 1.2 KB252 B
    Make each CSS response small (optimalCssSize)https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.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%7Cskins.minerva.mainPage.styles&only=styles&skin=minerva size is 16.7 kB (16715) 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 16.3 KB120.9 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://en.m.wikipedia.org/wiki/Main_Page
  • https://en.m.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script
  • 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 953 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 19 responses that sets both a max-age and expires header. There are 40 responses that sets a server header. 41
    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/Main_Page
  • 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/a/aa/Freston_site_map_and_c...and_cropmarks.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/8/86/Mingxing_Film_Company_...oduction_logo.jpg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/d/de/David_Lynch_at_the_199...0_Emmy_Awards.jpg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/7/71/Ereveld_Tanggok.jpg/33...eveld_Tanggok.jpg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/8/85/Volc%C3%A1n_Aucanquilc...2-10%2C_DD_11.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/en/thumb/4/4a/Commons-logo.svg/62px-Commons-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/a/a6/MediaWiki-2020-icon.sv...2020-icon.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/7/75/Wikimedia_Community_Lo...nity_Logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikibooks-logo.svg/70p...ooks-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/94px...data-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/102p...news-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikiquote-logo.svg/70p...uote-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/70...urce-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikispecies-logo.svg/7...cies-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Wikiversity_logo_2017....logo_2017.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Wikivoyage-Logo-v3-ico...o-v3-icon.svg.png
  • https://upload.wikimedia.org/wikipedia/en/thumb/0/06/Wiktionary-logo-v2.svg/70px...y-logo-v2.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Wiktionary-logo.svg/82...nary-logo.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?lang=en&modules=ext.gadget.switcher&skin=minerva&version=1u62d
  • https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.gadget.switcher&skin=minerva&version=1u62d
  • 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/wiki/Special:CentralAutoLogin/start?type=script
  • https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • 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/Main_Page
  • 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/Main_Page
  • Page info

    Page info
    TitleWikipedia, the free encyclopedia
    GeneratorMediaWiki 1.44.0-wmf.12
    Width360
    Height8004
    DOM elements1027
    Avg DOM depth14
    Max DOM depth21
    Iframes0
    Script tags7
    Local storage665.9 KB
    Session storage0 b
    Network Information API4g
    Resource Hints
    dns-prefetch
    https://meta.wikimedia.org/
    https://en.m.wikipedia.org/wiki/login.wikimedia.org
    preconnect
    https://upload.wikimedia.org/

    Technologies used to build the page.

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

    TechnologyConfidenceCategory
    MediaWiki 100  Wikis
    PHP 100  Programming languages
    Apache Traffic Server 9.2.6100  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 2

    Visual Metrics

    Browser Metrics

    Google Web Vitals
    Time to first byte (TTFB)228 ms
    First Contentful Paint (FCP)531 ms
    Largest Contentful Paint (LCP)867 ms
    Total Blocking Time (TBT)823 ms
    First Contentful Paint info
    Elements that needed recalculate style before FCP76
    Time spent in recalculate style before FCP34.872 ms
    Extra timings
    TTFB228 ms
    First Paint531 ms
    Load Event End2.391 s
    Fully loaded2.813 s
    User Timing marks
    mwStartup530 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 typeP
    Element/tag<p></p>
    Render time 867 ms
    Elements that needed recalculate style before LCP359
    Time spent in recalculate style before LCP73.194 ms
    Load time0 ms
    Size (width*height)116936
    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 > div#mp-upper > div#mp-left > div#mp-tfa > p> div#mw-mf-viewport > div#mw-mf-page-center > main#content > div#bodyContent > div#mw-content-text > div:eq(0) > section#mf-section-0 > div#mp-upper > div#mp-left > div#mp-tfa > p>
    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
    315 ms44.1 ms354.9 ms349 ms5.9 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    209 ms219.4 ms65.6 ms52.4 ms13.2 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: 4310

    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: 3233

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    134 ms26.8 ms175.2 ms158.2 ms17 ms
    https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.cx.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.growthExperiments.SuggestedEditSession%7Cext.urlShortener.toolbar%7Cjquery%2Coojs%2Csite%7Cjquery.client%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%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=ovuwc

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 208872

    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: 4310

    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: 3233

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    91 ms107 ms113 ms101 ms12 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: 4310

    https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.cx.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.growthExperiments.SuggestedEditSession%7Cext.urlShortener.toolbar%7Cjquery%2Coojs%2Csite%7Cjquery.client%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%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=ovuwc

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 208872

    https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.cx.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.growthExperiments.SuggestedEditSession%7Cext.urlShortener.toolbar%7Cjquery%2Coojs%2Csite%7Cjquery.client%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%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=ovuwc

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 208872

    https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralauth.ForeignApi%7Cext.cite.referencePreviews%7Cext.math.popup%7Cext.popups.main%7Cmediawiki.ForeignApi%7Cmediawiki.ForeignApi.core&skin=minerva&version=fjkj8

    Invoker:  https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralauth.ForeignApi%7Cext.cite.referencePreviews%7Cext.math.popup%7Cext.popups.main%7Cmediawiki.ForeignApi%7Cmediawiki.ForeignApi.core&skin=minerva&version=fjkj8
    Invoker Type: classic-script
    Window attribution: self

    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: 3233

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    74 ms34.6 ms113.4 ms0 ms113.4 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    34 ms33 ms73 ms63.6 ms9.4 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    18 ms78.4 ms6.6 ms5 ms1.6 ms
    https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.cx.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.growthExperiments.SuggestedEditSession%7Cext.urlShortener.toolbar%7Cjquery%2Coojs%2Csite%7Cjquery.client%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%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=ovuwc

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 208872

    https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.cx.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.growthExperiments.SuggestedEditSession%7Cext.urlShortener.toolbar%7Cjquery%2Coojs%2Csite%7Cjquery.client%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%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=ovuwc

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 208872

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    9 ms168.8 ms2.2 ms0.5 ms1.7 ms
    https://en.m.wikipedia.org/wiki/Main_Page

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

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    3 ms105.4 ms9.6 ms6.3 ms3.3 ms
    https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.cx.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.growthExperiments.SuggestedEditSession%7Cext.urlShortener.toolbar%7Cjquery%2Coojs%2Csite%7Cjquery.client%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%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=ovuwc

    Invoker:  https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.cx.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.growthExperiments.SuggestedEditSession%7Cext.urlShortener.toolbar%7Cjquery%2Coojs%2Csite%7Cjquery.client%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%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=ovuwc
    Invoker Type: classic-script
    Window attribution: self

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    0 ms50 ms0 ms0 ms0 ms
    https://en.m.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva

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

    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 (149px-Freston_site_map_and_cropmarks.png)900 ms 25 268 149 131
    <img alt="Map of the Freston causewayed enclosure" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Freston_site_map_and_cropmarks.png/149px-Freston_site_map_and_cropmarks.png" decoding="async" width="149" height="131" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Freston_site_map_and_cropmarks.png/224px-Freston_site_map_and_cropmarks.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Freston_site_map_and_cropmarks.png/298px-Freston_site_map_and_cropmarks.png 2x" data-file-width="1097" data-file-height="965">
    Heading900 ms 48 76 256 28
    <h1 id="Welcome_to_Wikipedia"></h1>
    LargestContentfulPaint900 ms 25 260 310 826
    <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 requests40
    Total domains3
    Total transfer size642.5 KB
    Total content size1.5 MB
    Responses missing compression6
    Number of cookies2
    Third party cookies0
    Requests per response code
    20039
    3021

    Largest assets on the page (by transfer size)

    Requests and sizes per content type

    ContentHeader SizeTransfer SizeContent SizeRequests
    html0 b25.8 KB103.1 KB1
    css0 b17.6 KB122.7 KB2
    javascript0 b229.9 KB929.1 KB5
    image0 b353.4 KB336.9 KB19
    svg0 b12.5 KB8.9 KB10
    json0 b1.4 KB263 B1
    favicon0 b1.7 KB2.7 KB1
    Total0 b642.5 KB1.5 MB39

    Data per domain

    DomainTotal download timeTransfer SizeContent SizeRequests
    en.m.wikipedia.org2.888 s289.9 KB1.1 MB21
    upload.wikimedia.org13.108 s351.4 KB335.6 KB18
    login.wikimedia.org192 ms1.2 KB252 B1

    Expires and last modified statistics

    typeminmedianmax
    Expires0 seconds0 seconds1 year
    Last modified5 seconds29 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
    json1.4 KB1
    favicon1.7 KB1
    Total5.1 KB3

    Requests loaded after onContentLoad

    Includes requests done after DOM content loaded.

    ContentTransfer SizeRequests
    html0 b0
    css0 b0
    javascript1.2 KB1
    image2.0 KB1
    font0 b0
    json1.4 KB1
    favicon1.7 KB1
    Total6.4 KB4

    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 823
    Max Potential First Input Delay 357
    Long Tasks before First Paint2113
    Long Tasks before First Contentful Paint2113
    Long Tasks before Largest Contentful Paint3226
    Long Tasks after Load Event End1119
    Total Long Tasks111386

    CPU last long task happened at 3.585 s

    Individual Long Tasks

    namestartTimedurationcontainerIdcontainerNamecontainerSrccontainerType
    unknown43163window
    self52850window
    unknown745113window
    unknown89273window
    unknown1010357window
    self1514194window
    self171066window
    self1908115window
    self2050175window
    self223761window
    self3585119window

    CPU time spent

    Calculated using Tracium.

    Categories (ms)
    parseHTML74
    styleLayout629
    paintCompositeRender27
    scriptParseCompile16
    scriptEvaluation973
    garbageCollection44
    other868
    Events (ms)
    FunctionCall797
    RunTask578
    Layout417
    UpdateLayoutTree205
    CpuProfiler::StartProfiling141
    v8.run96
    ParseHTML56
    DocumentLoader::CommitNavigation26
    HTMLDocumentParser::FetchQueuedPreloads22
    PrePaint22
    Paint19
    ParseAuthorStyleSheet18
    DecodedDataDocumentParser::AppendBytes16
    v8.compile16
    V8.GC_SCAVENGER_SCAVENGE_PARALLEL15
    RunMicrotasks14
    V8.HandleInterrupts13
    Commit12
    v8.callFunction12
    V8.BytecodeBudgetInterrupt12
    Layerize10

    Time spent per request

    URLCPU time (ms)
    https://en.m.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva837
    https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.cx.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.growthExperiments.SuggestedEditSession%7Cext.urlShortener.toolbar%7Cjquery%2Coojs%2Csite%7Cjquery.client%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%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=ovuwc237
    https://en.m.wikipedia.org/wiki/Main_Page16