Run 3 for https://en.m.wikipedia.org/wiki/Facebook at 2024-11-21 04:44:46

Summary

Metric	Value
Page metrics
Performance score	75
Total page size	698.6 KB
Requests	35
Timing metrics
TTFB	490 ms
First Paint	1.107 s
Fully Loaded	5.759 s
Google Web Vitals
TTFB	490 ms
First Contentful Paint (FCP)	1.107 s
Largest Contentful Paint (LCP)	1.535 s
Cumulative Layout Shift (CLS)	0.54
Total Blocking Time	2.683 s
Max Potential FID	1.118 s
CPU metrics
CPU long tasks	15
CPU last long task happens at	12.708 s
Visual Metrics
First Visual Change	1.133 s
Speed Index	6.992 s
Visual Complete 85%	13.433 s
Visual Complete 99%	15.400 s
Last Visual Change	15.900 s

Download video Download timeline Download Console Logs

| Waterfall | | Download HAR |

Waterfall

Download HAR Compare

| Video | Download |

Video

Download video

| Filmstrip |

Filmstrip

Use--filmstrip.showAll to show all filmstrips.

0 s

1 sCPU Long Task duration 127 ms

1.2 sFirst Contentful Paint 1.107 sFirst Visual Change 1.133 s

1.3 s

1.4 smwStartup 1.334 s

1.5 sCPU Long Task duration 127 ms

1.6 sLCP <P> 1.535 s

1.7 s

1.8 sCPU Long Task duration 276 ms

2 s

2.1 sCPU Long Task duration 84 ms

2.2 sCPU Long Task duration 214 ms

2.4 sCPU Long Task duration 69 ms

2.5 sDOM Content Loaded Time 2.427 sCPU Long Task duration 73 ms

2.7 sCPU Long Task duration 155 ms

2.8 sCPU Long Task duration 351 ms

2.9 s

3.2 sCPU Long Task duration 295 ms

3.3 s

3.4 s

3.5 sCPU Long Task duration 253 ms

3.8 s

3.9 sCPU Long Task duration 150 ms

4 smwCentralNoticeBanner 3.987 s

4.2 sPage Load Time 4.155 sCPU Long Task duration 1.118 s

4.3 s

5 s

5.1 s

5.2 s

5.3 s

5.4 sCPU Long Task duration 111 ms

5.8 sFully Loaded 5.759 s

6.1 s

6.2 s

6.4 s

6.5 s

6.6 s

7.1 s

7.2 s

7.9 s

8 s

8.1 s

8.3 s

8.4 s

8.6 s

12.2 s

12.5 s

12.8 sCPU Long Task duration 107 ms

12.9 s

13 sLayout Shift 0.00730 12.901 sLayout Shift 0.00937 12.929 sLayout Shift 0.01125 12.960 sLayout Shift 0.01406 12.988 s

13.1 sLayout Shift 0.00937 13.016 sLayout Shift 0.01985 13.047 sLayout Shift 0.02656 13.075 s

13.2 sLayout Shift 0.03364 13.106 sLayout Shift 0.02187 13.136 sLayout Shift 0.05103 13.167 s

13.3 sLayout Shift 0.06094 13.202 sLayout Shift 0.05781 13.234 sLayout Shift 0.04626 13.266 sLayout Shift 0.03594 13.292 s

13.4 sLayout Shift 0.02813 13.319 sLayout Shift 0.01250 13.348 sLayout Shift 0.02031 13.377 s

13.5 sLayout Shift 0.01660 13.405 sLayout Shift 0.00781 13.431 sVisual Complete 85% 13.433 sLayout Shift 0.01265 13.459 sLayout Shift 0.00554 13.486 s

13.6 sLayout Shift 0.01094 13.514 sLayout Shift 0.00830 13.543 sLayout Shift 0.00701 13.573 s

13.7 sLayout Shift 0.00625 13.631 sLayout Shift 0.00256 13.658 s

13.8 s

13.9 sLargest Image 13.866 sHeading 13.866 sVisual Complete 95% 13.900 s

14 s

14.1 s

14.2 s

14.3 s

15.4 sVisual Complete 99% 15.400 s

15.5 s

15.6 s

15.7 s

15.8 s

15.9 sLast Visual Change 15.900 s

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.

Coach score

Total score 79
Performance score 75
Privacy score 88
Best practice score 73

Performance advice (75)

Title

Advice

Score

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=minerva

Description: The critical rendering path is what the browser needs to do to start rendering the page. Every file requested inside of the head element will postpone the rendering of the page, because the browser need to do the request. Avoid loading JavaScript synchronously inside of the head (you should not need JavaScript to render the page), request files from the same domain as the main document (to avoid DNS lookups) and inline CSS for really fast rendering and a short rendering path.

Offenders:

https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php

Don't scale images in the browser (avoidScalingImages)

The page has 2 images that are scaled more than 100 pixels. It would be better if those images are sent so the browser don't need to scale them.

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

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.

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 15 CPU long tasks with the total of 3.510 s. The total blocking time is 2.683 s and 1 long task before first contentful paint with total time of 127 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.

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

Avoid doing redirects (assetsRedirects)

The page has 3 redirects. 1 of the redirects are from the base domain, please fix them! 2 requests are from other domains, it could be 3rd-party assets doing unnecessary redirects. :(

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.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script&mobile=1&mobile=1

https://meta.wikimedia.org/w/index.php...a.org/w/index.php

https://en.m.wikipedia.org/wiki/Special:CentralAutoLogin/start?mobile=1&mobile=1&type=script

Avoid extra requests by setting cache headers (cacheHeaders)

The page has 9 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 157.2 kB the next access.

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/en/6/64/Facebook_user_page.png

https://upload.wikimedia.org/wikipedia/commons/thumb/b/b9/2023_Facebook_icon.svg...book_icon.svg.png

https://upload.wikimedia.org/wikipedia/commons/thumb/9/93/Facebook_logo_%282023%...282023%29.svg.png

https://upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Increase2.svg/22px-Increase2.svg.png

https://en.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script&mobile=1&mobile=1

https://meta.wikimedia.org/w/index.php...a.org/w/index.php

https://en.m.wikipedia.org/wiki/Special:CentralAutoLogin/start?mobile=1&mobile=1&type=script

https://meta.m.wikimedia.org/w/index.php...a.org/w/index.php

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).

Description: Setting a cache header is good. Setting a long cache header (at least 30 days) is even better beacause then it will stay long in the browser cache. But what do you do if that asset change? Rename it and the browser will pick up the new version.

Offenders:

https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php

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

https://en.m.wikipedia.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=minerva

https://en.m.wikipedia.org/w/api.php?action=webapp-manifest

Always compress text content (compressAssets)

The page has 1 request that are served uncompressed. You could save a lot of bytes by sending them compressed instead.

Description: In the early days of the Internet there were browsers that didn't support compressing (gzipping) text content. They do now. Make sure you compress HTML, JSON, JavaScript, CSS and SVG. It will save bytes for the user; making the page load faster and use less bandwith.

Offenders:

URL	Transfer size	Content size
https://meta.m.wikimedia.org/w/index.php...a.org/w/index.php	63.6 KB	264.5 KB

Total JavaScript size shouldn't be too big (javascriptSize)

The total JavaScript transfer size is 339 kB and the uncompressed size is 1.3 MB. This is totally crazy! There is really room for improvement here.

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:

URL	Transfer size	Content size
https://en.m.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva	20.2 KB	60.8 KB
https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.gadget.switcher&skin=minerva&version=1u62d	1.5 KB	1.3 KB
https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php	186.8 KB	786.4 KB
https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php	3.6 KB	12.5 KB
https://meta.m.wikimedia.org/w/index.php...a.org/w/index.php	63.6 KB	264.5 KB
https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn	1.2 KB	252 B
https://en.m.wikipedia.org/w/load.php?lang=en&modules=vue&skin=minerva&version=n99vv	54.1 KB	146.3 KB

Make each CSS response small (optimalCssSize)

https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.cite.styles%7Cext.relatedArticles.styles%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cmediawiki.hlist%7Cmediawiki.page.gallery.styles%7Cmobile.init.styles%7Cskins.minerva.amc.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 18.6 kB (18604) and that is bigger than the limit of 14.5 kB. Try to make the CSS files fit into 14.5 KB.

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:

URL	Transfer size	Content size
https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php	18.2 KB	139.7 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.

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/Facebook

https://en.m.wikipedia.org/wiki/Special:CentralAutoLogin/start?mobile=1&mobile=1&type=script

Best practice advice (73)

Title	Advice	Score
Cumulative Layout Shift (cumulativeLayoutShift)	You have a poor cumulative layout shift score (0.5439). It is in the Google Web Vitals poor range, with a shift higher than 0.25. You should manually check the filmstrip or video and check if it will affect the user.	0
Description: Cumulative Layout Shift measures the sum total of all individual layout shift scores for unexpected layout shift that occur. The metric is measuring visual stability by quantify how often users experience unexpected layout shifts. It is one of Google Web Vitals.
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 1180 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 24 responses that sets both a max-age and expires header. There are 35 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/Facebook 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/en/6/64/Facebook_user_page.png https://en.m.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg https://en.m.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg https://upload.wikimedia.org/wikipedia/commons/thumb/b/b9/2023_Facebook_icon.svg...book_icon.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/9/93/Facebook_logo_%282023%...282023%29.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Increase2.svg/22px-Increase2.svg.png https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...ia.org/w/load.php https://en.m.wikipedia.org/w/load.php...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.wikipedia.org/wiki/Special:CentralAutoLogin/start?type=script&mobile=1&mobile=1 https://meta.wikimedia.org/w/index.php...a.org/w/index.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?mobile=1&mobile=1&type=script https://meta.m.wikimedia.org/w/index.php...a.org/w/index.php https://login.wikimedia.org/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn https://en.m.wikipedia.org/w/load.php?lang=en&modules=vue&skin=minerva&version=n99vv https://en.m.wikipedia.org/w/load.php?lang=en&modules=vue&skin=minerva&version=n99vv https://en.m.wikipedia.org/beacon/impression...beacon/impression 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)

Title	Advice	Score
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/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://en.m.wikipedia.org/wiki/Facebook

Page info

Page info
Title	Facebook - Wikipedia
Generator	MediaWiki 1.44.0-wmf.3
Width	360
Height	4585
DOM elements	16030
Avg DOM depth	13
Max DOM depth	23
Iframes	0
Script tags	8
Local storage	585.2 KB
Session storage	0 b
Network Information API	4g

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.

Technology	Confidence	Category
MediaWiki	100	Wikis
PHP	100	Programming languages
Apache Traffic Server 9.2.5	100	Web servers
HSTS	100	Security

Visual Metrics

Visual Metrics
First Visual Change	1.133 s
Speed Index	6.992 s
Largest Image	13.866 s
Heading	13.866 s
Last Meaningful Paint	13.866 s
Visual Complete 85%	13.433 s
Visual Complete 95%	13.900 s
Visual Complete 99%	15.400 s
Last Visual Change	15.900 s
Visual Readiness	14.767 s

Browser Metrics

Navigation Timing
backEndTime	490 ms
domContentLoadedTime	2.427 s
domInteractiveTime	2.427 s
domainLookupTime	89 ms
frontEndTime	3.348 s
pageDownloadTime	316 ms
pageLoadTime	4.155 s
redirectionTime	0 ms
serverConnectionTime	201 ms
serverResponseTime	511 ms

Google Web Vitals
Time to first byte (TTFB)	490 ms
First Contentful Paint (FCP)	1.107 s
Largest Contentful Paint (LCP)	1.535 s
Cumulative Layout Shift (CLS)	0.54
Total Blocking Time (TBT)	2.683 s

First Contentful Paint info
Elements that needed recalculate style before FCP	98
Time spent in recalculate style before FCP	47.375 ms

Extra timings
TTFB	490 ms
First Paint	1.107 s
Load Event End	4.156 s
Fully loaded	5.759 s

User Timing marks
mwStartup	1.334 s
mwCentralNoticeBanner	3.987 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 type	P
Element/tag	<p></p>
Render time	1.535 s
Elements that needed recalculate style before LCP	343
Time spent in recalculate style before LCP	73.537 ms
Load time	0 ms
*Size (widthheight)**	77499
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(2)> 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(2)>

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

0.54386 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.

Score	HTML Element
0.06094	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.05781	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.05103	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.04626	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.03594	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.03364	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.02813	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.02656	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.02187	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.02031	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.01985	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.01660	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.01406	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.01265	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.01250	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.01125	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.01094	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.00937	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.00937	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.00830	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.00781	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.00730	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.00701	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.00625	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.00554	<div id="wmde-banner-app" data-v-app=""></div>,<div id="mw-mf-page-center"></div>
body > div#wmde-banner-app,body > div#mw-mf-viewport > div#mw-mf-page-center
0.00256	<div id="wmde-banner-app" data-v-app=""></div>
body > div#wmde-banner-app

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 duration	Render duration	PreLayout Duration	Style And Layout Duration
1.110 s	1.118 s	42.7 ms	18.7 ms	24 ms
https://en.m.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva
Forced Style And Layout Duration: 423 ms Invoker: IdleRequestCallback Invoker Type: user-callback Source Function Name: doPropagation Window attribution: self Source char position: 4309
Invoker: FrameRequestCallback Invoker Type: user-callback Window attribution: self Source char position: 58338

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
310 ms	278.1 ms	83.9 ms	51.7 ms	32.2 ms
No availible script information.

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
304 ms	362.3 ms	2.7 ms	3 ms	-0.3 ms
https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%2CstartUp%7Cext.centralauth.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.mainMenu.styles%7Cskins.minerva.messageBox.styles%7Cskins.minerva.scripts%7Cwikibase.sidebar.tracking&skin=minerva&version=1ta1v
Invoker: TimerHandler:setTimeout Invoker Type: user-callback Window attribution: self Source char position: 219064
https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%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.mainMenu.styles%7Cskins.minerva.messageBox.styles%7Cskins.minerva.scripts%7Cwikibase.sidebar.tracking&skin=minerva&version=1ta1v
Invoker: TimerHandler:setTimeout Invoker Type: user-callback Window attribution: self Source char position: 219064

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
263 ms	37.7 ms	294.3 ms	280.8 ms	13.5 ms
https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%2CstartUp%7Cext.centralauth.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.mainMenu.styles%7Cskins.minerva.messageBox.styles%7Cskins.minerva.scripts%7Cwikibase.sidebar.tracking&skin=minerva&version=1ta1v
Forced Style And Layout Duration: 1 ms Invoker: TimerHandler:setTimeout Invoker Type: user-callback Window attribution: self Source char position: 219064
https://en.m.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva
Forced Style And Layout Duration: 28 ms Invoker: FrameRequestCallback Invoker Type: user-callback Source Function Name: flushCssBuffer Window attribution: self Source char position: 3231

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
232 ms	230.4 ms	67.6 ms	48.9 ms	18.7 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: 4309
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: 3231

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
227 ms	274.5 ms	23.5 ms	17.2 ms	6.3 ms
https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%2CstartUp%7Cext.centralauth.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.mainMenu.styles%7Cskins.minerva.messageBox.styles%7Cskins.minerva.scripts%7Cwikibase.sidebar.tracking&skin=minerva&version=1ta1v
Invoker: TimerHandler:setTimeout Invoker Type: user-callback Window attribution: self Source char position: 219064
https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%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.mainMenu.styles%7Cskins.minerva.messageBox.styles%7Cskins.minerva.scripts%7Cwikibase.sidebar.tracking&skin=minerva&version=1ta1v
Forced Style And Layout Duration: 29 ms Invoker: TimerHandler:setTimeout Invoker Type: user-callback Window attribution: self Source char position: 219064

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
178 ms	134.7 ms	153.3 ms	134.2 ms	19.1 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: 4309
https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%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.mainMenu.styles%7Cskins.minerva.messageBox.styles%7Cskins.minerva.scripts%7Cwikibase.sidebar.tracking&skin=minerva&version=1ta1v
Invoker: TimerHandler:setTimeout Invoker Type: user-callback Window attribution: self Source char position: 219064
https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%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.mainMenu.styles%7Cskins.minerva.messageBox.styles%7Cskins.minerva.scripts%7Cwikibase.sidebar.tracking&skin=minerva&version=1ta1v
Invoker: TimerHandler:setTimeout Invoker Type: user-callback Window attribution: self Source char position: 219064
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: 3231

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
177 ms	483.5 ms	121.5 ms	0 ms	121.5 ms
https://en.m.wikipedia.org/wiki/Facebook
Invoker: https://en.m.wikipedia.org/wiki/Facebook Invoker Type: classic-script Window attribution: self

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
106 ms	154.6 ms	6.4 ms	4 ms	2.4 ms
https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%2CstartUp%7Cext.centralauth.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.mainMenu.styles%7Cskins.minerva.messageBox.styles%7Cskins.minerva.scripts%7Cwikibase.sidebar.tracking&skin=minerva&version=1ta1v
Invoker: TimerHandler:setTimeout Invoker Type: user-callback Window attribution: self Source char position: 219064

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
88 ms	25.4 ms	127.6 ms	0.1 ms	127.5 ms
No availible script information.

Server timings

name	duration	description
cache	0	hit-front
host	0	cp3067

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

name	value
AudioHandlers	0
AudioWorkletProcessors	0
Documents	21
Frames	20
JSEventListeners	931
LayoutObjects	1272
MediaKeySessions	0
MediaKeys	0
Nodes	32059
Resources	32
ContextLifecycleStateObservers	23
V8PerContextDatas	1
WorkerGlobalScopes	0
UACSSResources	0
RTCPeerConnections	0
ResourceFetchers	21
AdSubframes	0
DetachedScriptStates	2
ArrayBufferContents	0
LayoutCount	250
RecalcStyleCount	286
LayoutDuration	640
RecalcStyleDuration	778
DevToolsCommandDuration	531
ScriptDuration	2576
V8CompileDuration	70
TaskDuration	8072
TaskOtherDuration	3477
ThreadTime	20
ProcessTime	23
JSHeapUsedSize	6953020
JSHeapTotalSize	18046976
FirstMeaningfulPaint	1107

Visual Elements

Name	Display Time	X	Y	Width	Height
LargestImage (wikipedia-wordmark-en.svg)	13.866 s	53	376	120	18
<img src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" alt="Wikipedia" width="120" height="18" style="width: 7.5em; height: 1.125em;">
Heading	13.866 s	16	433	328	37
<h1 id="firstHeading" class="firstHeading mw-first-heading"></h1>

PageXray

How the page is built.

Summary
HTTP version	HTTP/2.0
Total requests	35
Total domains	6
Total transfer size	698.6 KB
Total content size	2.8 MB
Responses missing compression	8
Number of cookies	4
Third party cookies	0

Requests per response code
200	31
204	1
302	3

Largest assets on the page (by transfer size)

URL	Type	Transfer Size	Content Size
https://en.m.wikipedia.org/wiki/Facebook	html	236.8 KB	1.3 MB
https://en.m.wikiped...ia.org/w/load.php	javascript	186.8 KB	786.4 KB
https://upload.wikim...ook_user_page.png	image	82.0 KB	81.1 KB
https://meta.m.wikim...a.org/w/index.php	javascript	63.6 KB	264.5 KB
https://en.m.wikiped...ia.org/w/load.php	javascript	54.1 KB	146.3 KB
https://en.m.wikiped...ia.org/w/load.php	javascript	20.2 KB	60.8 KB
https://en.m.wikiped...ia.org/w/load.php	css	18.2 KB	139.7 KB
https://en.m.wikiped...ia.org/w/load.php	javascript	3.6 KB	12.5 KB
https://upload.wikim...282023%29.svg.png	image	3.5 KB	2.6 KB
https://en.m.wikiped...a-wordmark-en.svg	svg	3.3 KB	6.0 KB
https://upload.wikim...book_icon.svg.png	image	2.3 KB	1.4 KB
https://en.m.wikiped...uch/wikipedia.png	image	2.0 KB	1.3 KB
https://en.m.wikiped...con/wikipedia.ico	favicon	1.7 KB	2.7 KB
https://en.m.wikiped...ia.org/w/load.php	javascript	1.5 KB	1.3 KB
https://en.m.wikiped...dia.org/w/api.php	json	1.4 KB	263 B
https://en.m.wikiped...ia.org/w/load.php	css	1.3 KB	1.8 KB
https://en.m.wikiped...ia.org/w/load.php	svg	1.2 KB	707 B
https://login.wikime...gin/checkLoggedIn	javascript	1.2 KB	252 B
https://en.m.wikiped...ia.org/w/load.php	svg	1.1 KB	585 B
https://en.m.wikiped...ia.org/w/load.php	svg	1.1 KB	414 B

Requests and sizes per content type

Content	Transfer Size	Content Size	Requests
html	236.8 KB	1.3 MB	1
css	19.5 KB	141.5 KB	2
javascript	331.0 KB	1.2 MB	7
image	90.7 KB	86.5 KB	5
svg	17.0 KB	10.7 KB	14
plain	546 B	0 b	1
json	1.4 KB	263 B	1
favicon	1.7 KB	2.7 KB	1
Total	698.6 KB	2.8 MB	32

Data per domain

Domain	Total download time	Transfer Size	Content Size	Requests
en.m.wikipedia.org	4.958 s	545.1 KB	2.4 MB	27
upload.wikimedia.org	2.614 s	88.7 KB	85.3 KB	4
en.wikipedia.org	188 ms	N/A	0 b	1
meta.wikimedia.org	97 ms	N/A	0 b	1
meta.m.wikimedia.org	249 ms	63.6 KB	264.5 KB	1
login.wikimedia.org	196 ms	1.2 KB	252 B	1

Expires and last modified statistics

type	min	median	max
Expires	0 seconds	4 weeks	1 year
Last modified	2 days	14 weeks	35 weeks

Console log

The page logs the following messages to the console.

Level	Message
WARNING	https://en.m.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva 11:274 "This page is using the deprecated ResourceLoader module \"skins.minerva.mainMenu.styles\".\nRetained for caching reasons. Please use skins.minerva.styles instead."
WARNING	https://en.m.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva 11:274 "This page is using the deprecated ResourceLoader module \"mediawiki.Uri\".\n[1.43] Please use browser native URL."
INFO	https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%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.mainMenu.styles%7Cskins.minerva.messageBox.styles%7Cskins.minerva.scripts%7Cwikibase.sidebar.tracking&skin=minerva&version=1ta1v 598:545 "Hello friend! 🍦\n\nWikipedia is powered by MediaWiki. MediaWiki is open source software and we're always keen to hear from fellow developers about what you love (😍) or what we could be doing better (😱).\n\n💪 Or work for us @ https://wikimediafoundation.org/about/jobs/"

Requests loaded after onLoad event

Included requests done after load event end.

Content	Transfer Size	Requests
html	0 b	0
css	0 b	0
javascript	0 b	0
image	2.0 KB	1
font	0 b	0
json	1.4 KB	1
favicon	1.7 KB	1
Total	5.1 KB	3

Requests loaded after onContentLoad

Includes requests done after DOM content loaded.

Content	Transfer Size	Requests
html	0 b	0
css	0 b	0
javascript	122.5 KB	4
image	2.0 KB	1
font	0 b	0
plain	546 B	1
json	1.4 KB	1
favicon	1.7 KB	1
Total	128.1 KB	10

Render blocking requests

Render blocking information directly from Chrome.

Blocking	In body parser blocking	Potentially blocking
2	0	1

Render information

URL	Type
https://en.m.wikiped...ia.org/w/load.php	non_blocking
https://meta.m.wikim...a.org/w/index.php	non_blocking
https://en.m.wikiped...ia.org/w/load.php	non_blocking
https://en.m.wikiped...ia.org/w/load.php	potentially_blocking
https://en.m.wikiped...ia.org/w/load.php	blocking
https://en.m.wikiped...ia.org/w/load.php	non_blocking
https://en.m.wikiped...ia.org/w/load.php	non_blocking
https://en.m.wikiped...ia.org/w/load.php	blocking
https://login.wikime...gin/checkLoggedIn	non_blocking
https://en.wikipedia...alAutoLogin/start	non_blocking
https://meta.wikimed...a.org/w/index.php	non_blocking
https://en.m.wikiped...alAutoLogin/start	non_blocking

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.

Download trace log

Long Tasks

Collected using the Long Task API. A long task is a task that take 50 milliseconds or more.

Type	Quantity	Total duration (ms)
Total Blocking Time		2683
Max Potential First Input Delay		1118
Long Tasks before First Paint	1	127
Long Tasks before First Contentful Paint	1	127
Long Tasks before Largest Contentful Paint	2	254
Long Tasks after Load Event End	3	1336
Total Long Tasks	15	3510

CPU last long task happened at 12.708 s

Individual Long Tasks

name	startTime	duration	containerType
unknown	977	127	window
unknown	1401	127	window
self	1754	276	window
unknown	2032	84	window
self	2123	214	window
self	2353	69	window
self	2479	73	window
self	2614	155	window
self	2778	351	window
self	3177	295	window
self	3492	253	window
self	3852	150	window
self	4179	1118	window
self	5397	111	window
self	12708	107	window

CPU time spent

Calculated using Tracium.

Categories (ms)
parseHTML	507
styleLayout	1367
paintCompositeRender	790
scriptParseCompile	71
scriptEvaluation	2472
garbageCollection	48
other	2269

Events (ms)
FunctionCall	2204
RunTask	1049
UpdateLayoutTree	725
Layout	625
ParseHTML	483
Paint	443
PrePaint	396
Layerize	222
PaintImage	156
HitTest	139
DecodedDataDocumentParser::AppendBytes	136
Commit	118
CpuProfiler::StartProfiling	111
DocumentLoader::BodyLoadingFinished	102
v8.run	88
v8.compile	71
RunMicrotasks	68
IntersectionObserverController::computeIntersections	60
V8.HandleInterrupts	48
DocumentLoader::CommitNavigation	31
UpdateLayer	29
ParseAuthorStyleSheet	21
HTMLDocumentParser::FetchQueuedPreloads	15
EventDispatch	13
V8.BytecodeBudgetInterrupt	11
DocumentLoader::FinishedLoading	11

Time spent per request

URL	CPU time (ms)
https://en.m.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva	2294
https://en.m.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%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.mainMenu.styles%7Cskins.minerva.messageBox.styles%7Cskins.minerva.scripts%7Cwikibase.sidebar.tracking&skin=minerva&version=1ta1v	979
https://meta.wikimedia.org/w/index.php?title=Special:BannerLoader&campaign=C24_WMDE_Mobile_EN_01&banner=B24_WMDE_Mobile_EN_01_var&uselang=en&debug=false	152
https://en.m.wikipedia.org/wiki/Facebook	12

| afterPageCompleteCheck.jpg | layoutShift.jpg | largestContentfulPaint.jpg |

Screenshots

afterPageCompleteCheck.jpg

layoutShift.jpg

largestContentfulPaint.jpg

Run 3 summary

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

Summary

Waterfall

Video

Filmstrip

Coach

Coach score

Performance advice (75)

Best practice advice (73)

Privacy advice (88)

Page info

Technologies used to build the page.

Visual Metrics

Browser Metrics

Largest Contentful Paint

Detected Cumulative Layout Shift

Long Animation Frames

Server timings

Custom metrics collected through JavaScript

Extra metrics collected using scripting

CDP Performance

Visual Elements

PageXray

Largest assets on the page (by transfer size)

Requests and sizes per content type

Data per domain

Expires and last modified statistics

Console log

Requests loaded after onLoad event

Requests loaded after onContentLoad

Render blocking requests

Render information

CPU

Long Tasks

Individual Long Tasks

CPU time spent

Time spent per request

Screenshots