Page summary

https://it.m.wikipedia.org/wiki/Facebook

Tested 2024-11-21 01:44:34 using Chrome 131.0.6778.69 (runtime settings).

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

Summary

MetricValue
Page metrics
Performance Score81
Total Page Transfer Size375.3 KB
Requests40
Timing metrics
TTFB [median]490 ms
First Paint [median]846 ms
Fully Loaded [median]3.618 s
Google Web Vitals
TTFB [median]490 ms
First Contentful Paint (FCP) [median]846 ms
Largest Contentful Paint (LCP) [median]1.291 s
Cumulative Layout Shift (CLS) [median]0.00
Total Blocking Time [median]857 ms
Max Potential FID [median]276 ms
CPU metrics
CPU long tasks [median]10
CPU longest task duration280 ms
CPU last long task happens at3.641 s
Visual Metrics
First Visual Change [median]866 ms
Speed Index [median]1.615 s
Visual Complete 85% [median]1.366 s
Visual Complete 99% [median]7.033 s
Last Visual Change [median]7.066 s
Screenshot of run 3

Timings Summary

Metricminmedianmeanmax
Visual Metrics
FirstVisualChange833 ms866 ms855 ms866 ms
LastVisualChange7.066 s7.066 s7.066 s7.066 s
SpeedIndex1.614 s1.615 s1.621 s1.633 s
Heading833 ms866 ms855 ms866 ms
LargestContentfulPaint1.300 s1.300 s1.300 s1.300 s
LastMeaningfulPaint1.300 s1.300 s1.300 s1.300 s
VisualReadiness6.200 s6.200 s6.211 s6.233 s
VisualComplete851.300 s1.366 s1.344 s1.366 s
VisualComplete957.033 s7.033 s7.033 s7.033 s
VisualComplete997.033 s7.033 s7.033 s7.033 s
Google Web Vitals
Time To First Byte (TTFB)489 ms490 ms494 ms504 ms
Largest Contentful Paint (LCP)1.285 s1.291 s1.291 s1.298 s
First Contentful Paint (FCP)836 ms846 ms848 ms861 ms
Cumulative Layout Shift (CLS)0.00110.00110.00110.0011
More metrics
firstPaint836 ms846 ms848 ms861 ms
loadEventEnd3.066 s3.188 s3.157 s3.217 s
User Timing
mwStartup1.038 s1.039 s1.049 s1.071 s
CPU
Total Blocking Time847 ms857 ms855 ms861 ms
Max Potential FID264 ms276 ms273 ms280 ms
CPU long tasks 9101010
CPU last long task happens at3.586 s3.641 s3.627 s3.653 s
| Waterfall | | Download HAR | 

Waterfall

Run 3 SpeedIndex median

| Video | Download | 

Video

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| Filmstrip | 

Filmstrip

Use--filmstrip.showAll to show all filmstrips.

0 s
0.8 sCPU Long Task duration 128 ms
0.9 sFirst Contentful Paint 846 msFirst Visual Change 866 msHeading 866 ms
1 s
1.1 smwStartup 1.039 s
1.2 sCPU Long Task duration 158 ms
1.3 sLCP <P> 1.298 s
1.4 sVisual Complete 85% 1.366 s
1.5 s
1.6 sCPU Long Task duration 214 ms
1.7 s
1.8 sCPU Long Task duration 157 ms
1.9 s
2 sLayout Shift 0.00114 1.913 s
2.2 sDOM Content Loaded Time 2.132 sCPU Long Task duration 155 ms
2.3 s
2.4 sCPU Long Task duration 56 ms
2.6 sCPU Long Task duration 50 msCPU Long Task duration 264 ms
2.9 sCPU Long Task duration 153 ms
3 s
3.1 sPage Load Time 3.060 s
3.2 s
3.5 sFully Loaded 3.498 s
3.7 sCPU Long Task duration 100 ms
3.9 s
4 s
4.1 s
4.2 s
4.3 s
4.4 s
4.5 s
4.8 s
5.9 s
6.2 s
6.3 s
6.7 s
6.8 s
7.1 sVisual Complete 95% 7.033 sVisual Complete 99% 7.033 sLast Visual Change 7.066 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 (81)

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://it.m.wikipedia.org/w/load.php?lang=it&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://it.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://it.m.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg
  • https://it.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 1.413 s. The total blocking time is 847 ms 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
  • self
  • self
  • unknown
  • self
  • 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://it.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script&mobile=1&mobile=1
  • https://it.m.wikipedia.org/wiki/Special:CentralAutoLogin/start?mobile=1&mobile=1&type=script
  • Avoid extra requests by setting cache headers (cacheHeaders)The page has 6 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 37.4 kB the next access.40
    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/6/69/Screen_of_Facebook_%28...ebook_%282%29.PNG
  • https://upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/36...isambigua.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/b/b9/2023_Facebook_icon.svg...book_icon.svg.png
  • https://it.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script&mobile=1&mobile=1
  • https://it.m.wikipedia.org/wiki/Special:CentralAutoLogin/start?mobile=1&mobile=1&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://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/api.php?action=webapp-manifest
  • Total JavaScript size shouldn't be too big (javascriptSize)The total JavaScript transfer size is 218.3 kB and the uncompressed size is 867.2 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://it.m.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva 20.2 KB61.1 KB
    https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php 1.8 KB2.2 KB
    https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php 189.9 KB783.3 KB
    https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn 1.2 KB252 B
    Make each CSS response small (optimalCssSize)https://it.m.wikipedia.org/w/load.php?lang=it&modules=ext.cite.styles%7Cext.relatedArticles.styles%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cjquery.tablesorter.styles%7Cmediawiki.hlist%7Cmediawiki.page.gallery.styles%7Cmobile.init.styles%7Cskins.minerva.codex.styles%7Cskins.minerva.content.styles.images%7Cskins.minerva.icons.wikimedia%7Cskins.minerva.mainMenu.icons%7Cskins.minerva.styles%7Cwikibase.client.init&only=styles&skin=minerva size is 17.6 kB (17609) 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://it.m.wikipedia.org/w/load.php...ia.org/w/load.php 17.2 KB129.3 KB
    Don't use private headers on static content (privateAssets)The page has 2 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.90
    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://it.m.wikipedia.org/wiki/Facebook
  • https://it.m.wikipedia.org/wiki/Special:CentralAutoLogin/start?mobile=1&mobile=1&type=script
  • 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://it.m.wikiped...ia.org/w/load.php has a header sourcemap that is 1107 characters long. 99
    Description: Do not send response headers that are too long.
    Offenders:
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • Avoid unnecessary headers (unnecessaryHeaders)There are 33 responses that sets both a max-age and expires header. There are 40 responses that sets a server header. 27
    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://it.m.wikipedia.org/wiki/Facebook
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva
  • https://it.m.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://upload.wikimedia.org/wikipedia/commons/thumb/6/69/Screen_of_Facebook_%28...ebook_%282%29.PNG
  • https://it.m.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg
  • https://it.m.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/36...isambigua.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/b/b9/2023_Facebook_icon.svg...book_icon.svg.png
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script&mobile=1&mobile=1
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://it.m.wikipedia.org/wiki/Special:CentralAutoLogin/start?mobile=1&mobile=1&type=script
  • https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • https://it.m.wikipedia.org/w/api.php?action=webapp-manifest
  • https://it.m.wikipedia.org/w/api.php?action=webapp-manifest
  • https://it.m.wikipedia.org/static/favicon/wikipedia.ico
  • https://it.m.wikipedia.org/static/favicon/wikipedia.ico
  • https://it.m.wikipedia.org/static/apple-touch/wikipedia.png
  • https://it.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://it.m.wikipedia.org/wiki/Facebook
  • 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://it.m.wikipedia.org/wiki/Facebook
  • Page info

    Page info
    TitleFacebook - Wikipedia
    GeneratorMediaWiki 1.44.0-wmf.3
    Width360
    Height5011
    DOM elements4315
    Avg DOM depth13
    Max DOM depth17
    Iframes0
    Script tags7
    Local storage569.7 KB
    Session storage0 b
    Network Information API4g
    Resource Hints
    dns-prefetch
    https://meta.wikimedia.org/
    https://login.wikimedia.org/
    preconnect
    https://upload.wikimedia.org/

    Technologies used to build the page.

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

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

    Data from run 3

    Visual Metrics

    Browser Metrics

    Google Web Vitals
    Time to first byte (TTFB)490 ms
    First Contentful Paint (FCP)846 ms
    Largest Contentful Paint (LCP)1.298 s
    Cumulative Layout Shift (CLS)0.00
    Total Blocking Time (TBT)857 ms
    First Contentful Paint info
    Elements that needed recalculate style before FCP93
    Time spent in recalculate style before FCP47.161 ms
    Extra timings
    TTFB490 ms
    First Paint846 ms
    Load Event End3.066 s
    Fully loaded3.498 s
    User Timing marks
    mwStartup1.039 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 1.298 s
    Elements that needed recalculate style before LCP332
    Time spent in recalculate style before LCP90.053 ms
    Load time0 ms
    Size (width*height)78030
    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(0)> 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(0)>
    LCP

    The largest contentful paint is highlighted in the image. If no element is highlighted the element was removed before the screenshot or the LCP API couldn't find the element.

    Detected Cumulative Layout Shift

    0.00114 cumulative layout shift collected from the Cumulative Layout Shift API.

    These HTML elements contribute most to the Cumulative Layout Shifts of the page. The higher score, the more layout shift.

    ScoreHTML Element
    0.00114,,<tr></tr>
    body > div#mw-mf-viewport > div#mw-mf-page-center > main#content > div#bodyContent > div#mw-content-text > div:eq(0) > section#mf-section-0 > table > tbody > tr:eq(0) > th > #text,body > div#mw-mf-viewport > div#mw-mf-page-center > main#content > div#bodyContent > div#mw-content-text > div:eq(0) > section#mf-section-0 > table > tbody > tr:eq(0) > th > span > a > #text,body > div#mw-mf-viewport > div#mw-mf-page-center > main#content > div#bodyContent > div#mw-content-text > div:eq(0) > section#mf-section-0 > table > tbody > tr:eq(1)
    Layout shift

    The elements that have shifted place is highlighted in the image (that have a higher value than 0.01). If the element shifted outside of the viewport, you will not see it there. It can be hard to understand what content that has shifted, if that's the case, checkout the video or the filmstrip of the run.

    Long Animation Frames

    Read more about the Long Animation Frames API here here.

    The top 10 longest animation frames entries

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    321 ms258 ms156 ms37 ms119 ms
    https://it.m.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva

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

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

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

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    264 ms96.5 ms264.5 ms240 ms24.5 ms
    https://it.m.wikipedia.org/w/load.php?lang=it&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.cite.ux-enhancements%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.relatedArticles.readMore.bootstrap%7Cext.urlShortener.toolbar%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Ctablesorter%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.language.months%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagelist.styles%7Cmobile.pagesummary.styles%7Cmw.externalguidance.init%7Cskins.minerva.icons%2Cscripts%7Cwikibase.sidebar.tracking&skin=minerva&version=1ucoq

    Forced Style And Layout Duration: 1 ms

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 207378

    https://it.m.wikipedia.org/w/load.php?lang=it&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.cite.ux-enhancements%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.relatedArticles.readMore.bootstrap%7Cext.urlShortener.toolbar%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Ctablesorter%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.language.months%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagelist.styles%7Cmobile.pagesummary.styles%7Cmw.externalguidance.init%7Cskins.minerva.icons%2Cscripts%7Cwikibase.sidebar.tracking&skin=minerva&version=1ucoq

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 207378

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

    Forced Style And Layout Duration: 29 ms

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

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    134 ms172.4 ms31.6 ms25.6 ms6 ms
    https://it.m.wikipedia.org/w/load.php?lang=it&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.cite.ux-enhancements%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.relatedArticles.readMore.bootstrap%7Cext.urlShortener.toolbar%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Ctablesorter%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.language.months%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagelist.styles%7Cmobile.pagesummary.styles%7Cmw.externalguidance.init%7Cskins.minerva.icons%2Cscripts%7Cwikibase.sidebar.tracking&skin=minerva&version=1ucoq

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 207378

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    129 ms69.9 ms155.1 ms129.8 ms25.3 ms
    https://it.m.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva

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

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

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

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    119 ms27.7 ms157.3 ms0 ms157.3 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    101 ms221.1 ms123.9 ms0 ms123.9 ms
    https://it.m.wikipedia.org/wiki/Facebook

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

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    10 ms67.5 ms3.5 ms1.8 ms1.7 ms
    https://it.m.wikipedia.org/w/load.php?lang=it&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.cite.ux-enhancements%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.relatedArticles.readMore.bootstrap%7Cext.urlShortener.toolbar%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Ctablesorter%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.language.months%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagelist.styles%7Cmobile.pagesummary.styles%7Cmw.externalguidance.init%7Cskins.minerva.icons%2Cscripts%7Cwikibase.sidebar.tracking&skin=minerva&version=1ucoq

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 207378

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    0 ms157.3 ms7.7 ms1.7 ms6 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    0 ms53.5 ms28.5 ms16.7 ms11.8 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    0 ms169.6 ms10.4 ms1.7 ms8.7 ms
    No availible script information.

    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 (100px-2023_Facebook_icon.svg.png) 130 604 100 101
    <img alt="Logo" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b9/2023_Facebook_icon.svg/100px-2023_Facebook_icon.svg.png" decoding="async" width="100" height="100" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b9/2023_Facebook_icon.svg/150px-2023_Facebook_icon.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b9/2023_Facebook_icon.svg/200px-2023_Facebook_icon.svg.png 2x" data-file-width="667" data-file-height="667">
    Heading866 ms 16 75 328 37
    <h1 id="firstHeading" class="firstHeading mw-first-heading"></h1>
    LargestContentfulPaint1.300 s 16 253 328 272
    <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 domains4
    Total transfer size375.3 KB
    Total content size1.3 MB
    Responses missing compression7
    Number of cookies3
    Third party cookies0
    Requests per response code
    20038
    3022

    Largest assets on the page (by transfer size)

    Requests and sizes per content type

    ContentHeader SizeTransfer SizeContent SizeRequests
    html0 b74.2 KB346.8 KB1
    css0 b18.4 KB134.2 KB2
    javascript0 b213.2 KB846.9 KB4
    image0 b37.3 KB34.0 KB4
    svg0 b29.0 KB14.4 KB25
    json0 b1.4 KB271 B1
    favicon0 b1.7 KB2.7 KB1
    Total0 b375.3 KB1.3 MB38

    Data per domain

    DomainTotal download timeTransfer SizeContent SizeRequests
    it.m.wikipedia.org5.053 s338.8 KB1.3 MB35
    upload.wikimedia.org1.513 s35.3 KB32.7 KB3
    it.wikipedia.org218 msN/A0 b1
    login.wikimedia.org98 ms1.2 KB252 B1

    Expires and last modified statistics

    typeminmedianmax
    Expires0 seconds4 weeks1 year
    Last modified1 day8 weeks3 years

    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 KB5

    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 857
    Max Potential First Input Delay 264
    Long Tasks before First Paint1128
    Long Tasks before First Contentful Paint1128
    Long Tasks before Largest Contentful Paint2286
    Long Tasks after Load Event End1100
    Total Long Tasks101435

    CPU last long task happened at 3.641 s

    Individual Long Tasks

    namestartTimedurationcontainerIdcontainerNamecontainerSrccontainerType
    unknown715128window
    unknown1127158window
    self1561214window
    self1778157window
    self2199155window
    self239556window
    self250750window
    self2561264window
    self2846153window
    self3641100window

    CPU time spent

    Calculated using Tracium.

    Categories (ms)
    parseHTML174
    styleLayout492
    paintCompositeRender75
    scriptParseCompile16
    scriptEvaluation1198
    garbageCollection21
    other903
    Events (ms)
    FunctionCall1036
    RunTask586
    UpdateLayoutTree241
    Layout238
    ParseHTML154
    CpuProfiler::StartProfiling102
    v8.run93
    Paint43
    DecodedDataDocumentParser::AppendBytes40
    DocumentLoader::CommitNavigation35
    DocumentLoader::BodyLoadingFinished25
    PrePaint24
    V8.HandleInterrupts23
    PaintImage23
    Commit18
    DocumentLoader::FinishedLoading18
    ParseAuthorStyleSheet17
    v8.compile16
    Layerize13
    HTMLDocumentParser::FetchQueuedPreloads12
    V8.BytecodeBudgetInterrupt12
    DocumentLoader::InitializeWindow10

    Time spent per request

    URLCPU time (ms)
    https://it.m.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva989
    https://it.m.wikipedia.org/w/load.php?lang=it&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.cite.ux-enhancements%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.relatedArticles.readMore.bootstrap%7Cext.urlShortener.toolbar%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Ctablesorter%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.language.months%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagelist.styles%7Cmobile.pagesummary.styles%7Cmw.externalguidance.init%7Cskins.minerva.icons%2Cscripts%7Cwikibase.sidebar.tracking&skin=minerva&version=1ucoq432
    https://it.m.wikipedia.org/wiki/Facebook13