Run 2 summary

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

Tested 2025-01-17 22:23:39 using Chrome 131.0.6778.85 (runtime settings).

SummaryWaterfall MetricsVideoFilmstrip CoachPageXrayCPU Screenshots

Summary

MetricValue
Page metrics
Performance score74
Total page size465.7 KB
Requests59
Timing metrics
TTFB488 ms
First Paint921 ms
Fully Loaded3.667 s
Google Web Vitals
TTFB488 ms
First Contentful Paint (FCP) 921 ms
Largest Contentful Paint (LCP) 1.481 s
Cumulative Layout Shift (CLS) 0.00
Total Blocking Time958 ms
Max Potential FID241 ms
CPU metrics
CPU long tasks13
CPU last long task happens at3.749 s
Visual Metrics
First Visual Change933 ms
Speed Index1.683 s
Visual Complete 85%1.500 s
Visual Complete 99%7.033 s
Last Visual Change7.066 s
Screenshot
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Waterfall

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Video

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| Filmstrip | 

Filmstrip

Use--filmstrip.showAll to show all filmstrips.

0 s
0.8 sCPU Long Task duration 132 ms
1 sFirst Contentful Paint 921 msFirst Visual Change 933 msHeading 933 ms
1.1 s
1.2 s
1.3 sCPU Long Task duration 50 msmwStartup 1.230 s
1.4 sCPU Long Task duration 140 ms
1.5 sLCP <P> 1.481 sVisual Complete 85% 1.500 s
1.6 s
1.7 sCPU Long Task duration 192 ms
1.8 s
1.9 sCPU Long Task duration 77 ms
2 sCPU Long Task duration 83 ms
2.1 s
2.2 sCPU Long Task duration 152 ms
2.3 sCPU Long Task duration 150 ms
2.5 sCPU Long Task duration 75 ms
2.6 sDOM Content Loaded Time 2.510 sCPU Long Task duration 160 ms
2.8 sCPU Long Task duration 241 ms
2.9 s
3 s
3.1 sPage Load Time 3.018 sCPU Long Task duration 141 ms
3.3 s
3.4 s
3.5 s
3.6 s
3.7 sFully Loaded 3.667 s
3.8 sCPU Long Task duration 97 ms
3.9 s
4 s
4.3 s
4.4 s
4.5 s
4.6 s
6.5 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 (74)

TitleAdviceScore
Avoid slowing down the critical rendering path (avoidRenderBlocking)The page has 1 blocking requests and 0 in body parser blocking (0 JavaScript and 1 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 13 CPU long tasks with the total of 1.690 s. The total blocking time is 958 ms and 1 long task before first contentful paint with total time of 132 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
  • self
  • unknown
  • self
  • self
  • unknown
  • self
  • self
  • unknown
  • 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://it.m.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script
  • Avoid extra requests by setting cache headers (cacheHeaders)The page has 37 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 114.5 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/a8/Juventus_FC_-_pictogra...C_2017%29.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/36...isambigua.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/c/cf/Football_pictogram.svg...pictogram.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/3/3b/Coccarda_Coppa_Italia....pa_Italia.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/d/d9/Kit_left_arm_juventus2425h.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Kit_left_arm.svg/62px-Kit_left_arm.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/f/fb/Kit_body_juventus2425h.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/8/83/Kit_body.svg/76px-Kit_body.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/1/1d/Kit_right_arm_juventus2425h.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/c/cd/Kit_right_arm.svg/62px...right_arm.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/c/cd/Kit_shorts_juventus2425h.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/a/af/Kit_shorts.svg/200px-Kit_shorts.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Kit_socks.svg/200px-Kit_socks.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/3/35/Kit_left_arm_juventus2425a.png
  • https://upload.wikimedia.org/wikipedia/commons/9/90/Kit_body_juventus2425a.png
  • https://upload.wikimedia.org/wikipedia/commons/3/30/Kit_right_arm_juventus2425a.png
  • https://upload.wikimedia.org/wikipedia/commons/3/35/Kit_shorts_juventus2425a.png
  • https://upload.wikimedia.org/wikipedia/commons/a/a6/Kit_left_arm_juventus2425t.png
  • https://upload.wikimedia.org/wikipedia/commons/7/78/Kit_body_juventus2425t.png
  • https://upload.wikimedia.org/wikipedia/commons/2/23/Kit_right_arm_juventus2425t.png
  • https://upload.wikimedia.org/wikipedia/commons/b/b9/Kit_shorts_juventus2425t.png
  • https://upload.wikimedia.org/wikipedia/commons/4/47/Kit_socks_juventus2425t.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/4/49/600px_pentasection_ver...ack_White.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/0/03/Flag_of_Italy.svg/40px..._of_Italy.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/0/05/Stella_10_Scudetti.svg..._Scudetti.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/9/99/Scudetto.svg/40px-Scudetto.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/7/74/CoccardaCoppaItalia10....aItalia10.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Supercoppa_Italiana.sv..._Italiana.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/5/58/Coppa_Ali_della_vittor..._vittoria.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/8/8b/Coppa_Campioni.svg/40p..._Campioni.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/a/ab/Coppa_delle_Coppe.svg/...lle_Coppe.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/9/9f/Coppauefa.png/28px-Coppauefa.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Supercoppa_UEFA.svg/26...oppa_UEFA.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Intertoto.png/26px-Intertoto.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Soccerball_current_eve...ent_event.svg.png
  • https://it.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 3 requests that have a shorter cache time than 30 days (but still a cache time).97
    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/api.php?action=webapp-manifest
  • Total JavaScript size shouldn't be too big (javascriptSize)The total JavaScript transfer size is 211.1 kB and the uncompressed size is 830.6 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 20.4 KB61.5 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 182.7 KB747.2 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%7Cmediawiki.hlist%7Cmobile.init.styles%7Cskins.minerva.codex.styles%7Cskins.minerva.content.styles.images%7Cskins.minerva.icons%2Cstyles%7Cwikibase.client.init&only=styles&skin=minerva size is 16.7 kB (16733) 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 16.3 KB121.0 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://it.m.wikipedia.org/wiki/Juventus_Football_Club
  • https://it.m.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script
  • https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • Best practice advice (88)

    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 1029 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 21 responses that sets both a max-age and expires header. There are 59 responses that sets a server header. 20
    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/Juventus_Football_Club
  • 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://upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Juventus_FC_-_pictogra...C_2017%29.svg.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/c/cf/Football_pictogram.svg...pictogram.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/3/3b/Coccarda_Coppa_Italia....pa_Italia.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/d/d9/Kit_left_arm_juventus2425h.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Kit_left_arm.svg/62px-Kit_left_arm.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://upload.wikimedia.org/wikipedia/commons/f/fb/Kit_body_juventus2425h.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/8/83/Kit_body.svg/76px-Kit_body.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/1/1d/Kit_right_arm_juventus2425h.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/c/cd/Kit_right_arm.svg/62px...right_arm.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/c/cd/Kit_shorts_juventus2425h.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/a/af/Kit_shorts.svg/200px-Kit_shorts.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Kit_socks.svg/200px-Kit_socks.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/3/35/Kit_left_arm_juventus2425a.png
  • https://upload.wikimedia.org/wikipedia/commons/9/90/Kit_body_juventus2425a.png
  • https://upload.wikimedia.org/wikipedia/commons/3/30/Kit_right_arm_juventus2425a.png
  • https://upload.wikimedia.org/wikipedia/commons/3/35/Kit_shorts_juventus2425a.png
  • https://upload.wikimedia.org/wikipedia/commons/a/a6/Kit_left_arm_juventus2425t.png
  • https://upload.wikimedia.org/wikipedia/commons/7/78/Kit_body_juventus2425t.png
  • https://upload.wikimedia.org/wikipedia/commons/2/23/Kit_right_arm_juventus2425t.png
  • https://upload.wikimedia.org/wikipedia/commons/b/b9/Kit_shorts_juventus2425t.png
  • https://upload.wikimedia.org/wikipedia/commons/4/47/Kit_socks_juventus2425t.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/4/49/600px_pentasection_ver...ack_White.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/0/03/Flag_of_Italy.svg/40px..._of_Italy.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/0/05/Stella_10_Scudetti.svg..._Scudetti.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/9/99/Scudetto.svg/40px-Scudetto.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/7/74/CoccardaCoppaItalia10....aItalia10.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Supercoppa_Italiana.sv..._Italiana.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/5/58/Coppa_Ali_della_vittor..._vittoria.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/8/8b/Coppa_Campioni.svg/40p..._Campioni.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/a/ab/Coppa_delle_Coppe.svg/...lle_Coppe.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/9/9f/Coppauefa.png/28px-Coppauefa.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Supercoppa_UEFA.svg/26...oppa_UEFA.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Intertoto.png/26px-Intertoto.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Soccerball_current_eve...ent_event.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/wiki/Special:CentralAutoLogin/start?type=script
  • https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • 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/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/Juventus_Football_Club
  • 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/Juventus_Football_Club
  • Page info

    Page info
    TitleJuventus Football Club - Wikipedia
    GeneratorMediaWiki 1.44.0-wmf.12
    Width360
    Height6102
    DOM elements7621
    Avg DOM depth13
    Max DOM depth20
    Iframes0
    Script tags7
    Local storage543.9 KB
    Session storage0 b
    Network Information API4g
    Resource Hints
    dns-prefetch
    https://meta.wikimedia.org/
    https://it.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 | Metrics from CDP | Server timings | 

    Visual Metrics

    Browser Metrics

    Google Web Vitals
    Time to first byte (TTFB)488 ms
    First Contentful Paint (FCP)921 ms
    Largest Contentful Paint (LCP)1.481 s
    Total Blocking Time (TBT)958 ms
    First Contentful Paint info
    Elements that needed recalculate style before FCP93
    Time spent in recalculate style before FCP44.927 ms
    Extra timings
    TTFB488 ms
    First Paint921 ms
    Load Event End3.022 s
    Fully loaded3.667 s
    User Timing marks
    mwStartup1.230 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 1.481 s
    Elements that needed recalculate style before LCP257
    Time spent in recalculate style before LCP70.31 ms
    Load time0 ms
    Size (width*height)47680
    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

    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
    216 ms260.9 ms73.1 ms45.8 ms27.3 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%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%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.scripts&skin=minerva&version=efj8n

    Invoker:  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%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%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.scripts&skin=minerva&version=efj8n
    Invoker Type: classic-script
    Window attribution: self

    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: 4310

    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: 3233

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    202 ms308.7 ms11.3 ms2.7 ms8.6 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%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%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.scripts&skin=minerva&version=efj8n

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 212632

    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%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%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.scripts&skin=minerva&version=efj8n

    Forced Style And Layout Duration: 19 ms

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 212632

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    176 ms151.3 ms75.7 ms52.6 ms23.1 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    131 ms295.8 ms126.2 ms0 ms126.2 ms
    https://it.m.wikipedia.org/wiki/Juventus_Football_Club

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

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    128 ms43.1 ms151.9 ms132.5 ms19.4 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: 4310

    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: 3233

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    126 ms29.8 ms159.2 ms111.7 ms47.5 ms
    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: 3233

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    118 ms175.7 ms27.3 ms20.3 ms7 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%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%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.scripts&skin=minerva&version=efj8n

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 212632

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    100 ms10.5 ms139.5 ms0 ms139.5 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    43 ms23.6 ms82.4 ms63.3 ms19.1 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    0 ms206.3 ms9.7 ms2.9 ms6.8 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.

    CDP Performance

    namevalue
    AudioHandlers0
    AudioWorkletProcessors0
    Documents41
    Frames19
    JSEventListeners415
    LayoutObjects1281
    MediaKeySessions0
    MediaKeys0
    Nodes16569
    Resources61
    ContextLifecycleStateObservers48
    V8PerContextDatas3
    WorkerGlobalScopes0
    UACSSResources0
    RTCPeerConnections0
    ResourceFetchers41
    AdSubframes0
    DetachedScriptStates2
    ArrayBufferContents2
    LayoutCount20
    RecalcStyleCount19
    LayoutDuration270
    RecalcStyleDuration249
    DevToolsCommandDuration475
    ScriptDuration1155
    V8CompileDuration11
    TaskDuration3388
    TaskOtherDuration1228
    ThreadTime17
    ProcessTime19
    JSHeapUsedSize6554192
    JSHeapTotalSize8081408
    FirstMeaningfulPaint1480

    Visual Elements

    NameDisplay TimeX YWidthHeight
    LargestImage (140px-Juventus_FC_-_pictogram_black_%28Italy%2C_2017%29.svg.png) 110 599 140 222
    <img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Juventus_FC_-_pictogram_black_%28Italy%2C_2017%29.svg/140px-Juventus_FC_-_pictogram_black_%28Italy%2C_2017%29.svg.png" decoding="async" width="140" height="221" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Juventus_FC_-_pictogram_black_%28Italy%2C_2017%29.svg/210px-Juventus_FC_-_pictogram_black_%28Italy%2C_2017%29.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Juventus_FC_-_pictogram_black_%28Italy%2C_2017%29.svg/280px-Juventus_FC_-_pictogram_black_%28Italy%2C_2017%29.svg.png 2x" data-file-width="164" data-file-height="259">
    Heading933 ms 16 75 328 37
    <h1 id="firstHeading" class="firstHeading mw-first-heading"></h1>
    LargestContentfulPaint1.500 s 16 329 328 166
    <p></p>
    | Summary  | Largest responses  | Requests and sizes per content type  | Data per domain | Expires and last modified statistics  | Console log  | Requests loaded after onLoad event  | Render blocking requests  | 

    PageXray

    How the page is built.

    Summary
    HTTP versionHTTP/2.0
    Total requests59
    Total domains3
    Total transfer size465.7 KB
    Total content size1.7 MB
    Responses missing compression6
    Number of cookies2
    Third party cookies0
    Requests per response code
    20058
    3021

    Largest assets on the page (by transfer size)

    Requests and sizes per content type

    ContentHeader SizeTransfer SizeContent SizeRequests
    html0 b110.5 KB675.1 KB1
    css0 b16.3 KB121.0 KB1
    javascript0 b206.2 KB811.2 KB4
    image0 b112.6 KB81.8 KB36
    svg0 b16.9 KB10.7 KB14
    json0 b1.4 KB271 B1
    favicon0 b1.7 KB2.7 KB1
    Total0 b465.7 KB1.7 MB58

    Data per domain

    DomainTotal download timeTransfer SizeContent SizeRequests
    it.m.wikipedia.org3.607 s353.9 KB1.6 MB23
    upload.wikimedia.org10.935 s110.6 KB80.5 KB35
    login.wikimedia.org191 ms1.2 KB252 B1

    Expires and last modified statistics

    typeminmedianmax
    Expires0 seconds0 seconds1 year
    Last modified2 hours26 weeks3 years

    Console log

    The page logs the following messages to the console.

    LevelMessage
    WARNING https://it.m.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva 11:307 "This page is using the deprecated ResourceLoader module \"mediawiki.Uri\".\n[1.43] Please use browser native URL."
    INFO 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%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%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.scripts&skin=minerva&version=efj8n 592:994 "Learn more about how we build our mobile site @ https://www.mediawiki.org/wiki/Special:MyLanguage/Extension:MobileFrontend"

    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
    javascript0 b0
    image2.0 KB1
    font0 b0
    json1.4 KB1
    favicon1.7 KB1
    Total5.1 KB3

    Render blocking requests

    Render blocking information directly from Chrome.

    BlockingIn body parser blockingPotentially blocking
    101

    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 958
    Max Potential First Input Delay 241
    Long Tasks before First Paint1132
    Long Tasks before First Contentful Paint1132
    Long Tasks before Largest Contentful Paint3322
    Long Tasks after Load Event End2238
    Total Long Tasks131690

    CPU last long task happened at 3.749 s

    Individual Long Tasks

    namestartTimedurationcontainerIdcontainerNamecontainerSrccontainerType
    unknown788132window
    self122750window
    unknown1330140window
    self1671192window
    self188177window
    unknown198283window
    self2109152window
    self2265150window
    unknown241675window
    self2529160window
    self2755241window
    self3045141window
    self374997window

    CPU time spent

    Calculated using Tracium.

    Categories (ms)
    parseHTML293
    styleLayout534
    paintCompositeRender79
    scriptParseCompile11
    scriptEvaluation1155
    garbageCollection28
    other1056
    Events (ms)
    FunctionCall976
    RunTask667
    ParseHTML275
    Layout273
    UpdateLayoutTree251
    CpuProfiler::StartProfiling103
    v8.run87
    DecodedDataDocumentParser::AppendBytes58
    DocumentLoader::BodyLoadingFinished52
    Paint48
    HTMLDocumentParser::FetchQueuedPreloads34
    DocumentLoader::CommitNavigation32
    PaintImage26
    Commit26
    V8.HandleInterrupts25
    PrePaint24
    Layerize19
    ParseAuthorStyleSheet18
    RunMicrotasks16
    EventDispatch13
    V8.GC_SCAVENGER_SCAVENGE_PARALLEL11
    v8.compile11
    V8.BytecodeBudgetInterrupt11

    Time spent per request

    URLCPU time (ms)
    https://it.m.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva793
    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%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%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.scripts&skin=minerva&version=efj8n550
    https://it.m.wikipedia.org/wiki/Juventus_Football_Club12
    afterPageCompleteCheck.jpg | layoutShift.jpg | largestContentfulPaint.jpg | 

    Screenshots

    afterPageCompleteCheck.jpg

    afterPageCompleteCheck.jpg

    layoutShift.jpg

    layoutShift.jpg

    largestContentfulPaint.jpg

    largestContentfulPaint.jpg