Summary for 3 runs https://it.wikipedia.org/wiki/Facebook at 2025-10-27 00:38:48

Summary

Metric	Value
Page metrics
Performance Score	82
Total Page Transfer Size	407.6 KB
Requests	26
Timing metrics
TTFB [median]	506 ms
First Paint [median]	844 ms
Fully Loaded [median]	2.996 s
Google Web Vitals
TTFB [median]	506 ms
First Contentful Paint (FCP) [median]	844 ms
Largest Contentful Paint (LCP) [median]	1.200 s
Cumulative Layout Shift (CLS) [median]	0.00
Total Blocking Time [median]	881 ms
Max Potential FID [median]	396 ms
CPU metrics
CPU long tasks [median]	11
CPU longest task duration	441 ms
CPU last long task happens at	3.626 s
Visual Metrics
First Visual Change [median]	867 ms
Speed Index [median]	1.591 s
Visual Complete 85% [median]	1.200 s
Visual Complete 99% [median]	7.067 s
Last Visual Change [median]	7.234 s

Timings Summary

Metric	min	median	mean	max
Visual Metrics
FirstVisualChange	867 ms	867 ms	923 ms	1.034 s
LastVisualChange	7.234 s	7.234 s	7.234 s	7.234 s
SpeedIndex	1.567 s	1.591 s	1.607 s	1.664 s
LargestImage	1.000 s	1.000 s	1.011 s	1.034 s
Heading	867 ms	867 ms	923 ms	1.034 s
LargestContentfulPaint	2.934 s	2.967 s	2.967 s	3.000 s
LastMeaningfulPaint	2.934 s	2.967 s	2.967 s	3.000 s
VisualReadiness	6.200 s	6.367 s	6.311 s	6.367 s
VisualComplete85	1.200 s	1.200 s	1.211 s	1.234 s
VisualComplete95	7.067 s	7.067 s	7.067 s	7.067 s
VisualComplete99	7.067 s	7.067 s	7.067 s	7.067 s
Google Web Vitals
Time To First Byte (TTFB)	486 ms	506 ms	513 ms	546 ms
Largest Contentful Paint (LCP)	1.000 s	1.200 s	1.139 s	1.216 s
First Contentful Paint (FCP)	836 ms	844 ms	893 ms	1.000 s
Cumulative Layout Shift (CLS)	0	0	0	0
More metrics
firstPaint	836 ms	844 ms	893 ms	1.000 s
loadEventEnd	1.544 s	1.778 s	2.087 s	2.938 s
User Timing
mwStartup	790 ms	1.008 s	939 ms	1.020 s
CPU
Total Blocking Time	876 ms	881 ms	893 ms	923 ms
Max Potential FID	309 ms	396 ms	382 ms	441 ms
CPU long tasks	11	11	11	12
CPU last long task happens at	3.587 s	3.626 s	3.617 s	3.638 s

Download video Download timeline Download HAR Download Console Logs

| Waterfall | | Download HAR |

Waterfall

Run 2 SpeedIndex median

Download HAR Compare

| Video | Download |

Video

Download video

| Filmstrip |

Filmstrip

Use--filmstrip.showAll to show all filmstrips.

0 s

0.7 sCPU Long Task duration 122 ms

0.9 sFirst Contentful Paint 836 msFirst Visual Change 867 msHeading 867 ms

1 sLargest Image 1.000 s

1.1 sCPU Long Task duration 51 msmwStartup 1.008 sCPU Long Task duration 119 ms

1.2 sLCP <P> 1.200 sVisual Complete 85% 1.200 s

1.3 s

1.4 s

1.5 sCPU Long Task duration 65 ms

1.6 sDOM Content Loaded Time 1.515 sPage Load Time 1.544 sCPU Long Task duration 215 ms

1.7 s

1.8 sCPU Long Task duration 61 ms

2 sCPU Long Task duration 64 msCPU Long Task duration 60 ms

2.1 sCPU Long Task duration 67 ms

2.2 sCPU Long Task duration 441 ms

2.3 s

2.4 s

2.6 s

2.7 sCPU Long Task duration 180 ms

2.9 s

3 sFully Loaded 2.953 s

3.1 s

3.2 s

3.3 s

3.4 s

3.5 s

3.7 sCPU Long Task duration 108 ms

3.8 s

4 s

4.1 s

4.3 s

4.6 s

4.8 s

4.9 s

5 s

5.9 s

7.1 sVisual Complete 95% 7.067 sVisual Complete 99% 7.067 s

7.2 s

7.3 sLast Visual Change 7.234 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 8.1.3.

Coach score

Total score 85
Performance score 82
Privacy score 88
Best practice score 89

Performance advice (82)

Title

Advice

Score

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.wikipedia.org/w/load.php?lang=it&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://it.wikipedia.org/w/load.php...ia.org/w/load.php

Don't scale images in the browser (avoidScalingImages)

The page has 3 images that are scaled more than 100 pixels. It would be better if those images are sent so the browser don't need to scale them.

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.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg

https://upload.wikimedia.org/wikipedia/commons/thumb/6/69/Screen_of_Facebook_%28...ebook_%282%29.PNG

https://it.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 11 CPU long tasks with the total of 1.496 s. The total blocking time is 876 ms and 1 long task before first contentful paint with total time of 120 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 1 redirect. 1 of the redirects are from the base domain, please fix them!

Description: A redirect is one extra step for the user to download the asset. Avoid that if you want to be fast. Redirects are even more of a showstopper on mobile.

Offenders:

https://it.wikipedia.org/wiki/Special:CentralAutoLogin/start?useformat=mobile&type=script&usesul3=1

Avoid extra requests by setting cache headers (cacheHeaders)

The page has 5 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 75.2 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/commons/thumb/6/69/Screen_of_Facebook_%28...ebook_%282%29.PNG

https://upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/40...isambigua.svg.png

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

https://it.wikipedia.org/wiki/Special:CentralAutoLogin/start?useformat=mobile&type=script&usesul3=1

https://auth.wikimedia.org/metawiki/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).

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.wikipedia.org/w/load.php...ia.org/w/load.php

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

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

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

The total JavaScript transfer size is 221.9 kB and the uncompressed size is 850.5 kB. This is quite large.

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://it.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva	20.9 KB	62.7 KB
https://it.wikipedia.org/w/load.php...ia.org/w/load.php	1.9 KB	2.2 KB
https://it.wikipedia.org/w/load.php...ia.org/w/load.php	192.5 KB	765.4 KB
https://auth.wikimedia.org/metawiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn	1.5 KB	294 B

Make each CSS response small (optimalCssSize)

https://it.wikipedia.org/w/load.php?lang=it&modules=ext.cite.styles%7Cext.relatedArticles.styles%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cjquery.tablesorter.styles%7Cmediawiki.hlist%7Cmediawiki.page.gallery.styles%7Cmobile.init.styles%7Cskins.minerva.codex.styles%7Cskins.minerva.content.styles.images%7Cskins.minerva.icons%2Cstyles%7Cwikibase.client.init&only=styles&skin=minerva size is 20.9 kB (20930) 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://it.wikipedia.org/w/load.php...ia.org/w/load.php	20.4 KB	152.4 KB

Don't use private headers on static content (privateAssets)

The page has 3 requests with private headers. The main page has a private header. It could be right in some cases where the user can be logged in and served specific content. But if your asset is static it should never be private. Make sure that the assets really should be private and only used by one user. Otherwise, make it cacheable for everyone.

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.wikipedia.org/wiki/Facebook

https://it.wikipedia.org/wiki/Special:CentralAutoLogin/start?useformat=mobile&type=script&usesul3=1

https://auth.wikimedia.org/metawiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn

Best practice advice (89)

Title	Advice	Score
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.wikipedia...ia.org/w/load.php has a header sourcemap that is 1213 characters long.	99
Description: Do not send response headers that are too long.
Offenders: https://it.wikipedia.org/w/load.php...ia.org/w/load.php
Avoid unnecessary headers (unnecessaryHeaders)	There are 20 responses that sets both a max-age and expires header. There are 26 responses that sets a server header.	54
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.wikipedia.org/wiki/Facebook https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva https://it.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva https://upload.wikimedia.org/wikipedia/commons/thumb/6/69/Screen_of_Facebook_%28...ebook_%282%29.PNG https://it.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg https://it.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg https://upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/40...isambigua.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/b/b9/2023_Facebook_icon.svg...book_icon.svg.png https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/wiki/Special:CentralAutoLogin/start?useformat=mobile&type=script&usesul3=1 https://auth.wikimedia.org/metawiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/load.php...ia.org/w/load.php https://it.wikipedia.org/w/api.php?action=webapp-manifest https://it.wikipedia.org/w/api.php?action=webapp-manifest https://it.wikipedia.org/static/favicon/wikipedia.ico https://it.wikipedia.org/static/favicon/wikipedia.ico https://it.wikipedia.org/static/apple-touch/wikipedia.png https://it.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://it.wikipedia.org/wiki/Facebook
Set a referrer-policy header to make sure you do not leak user information. (referrerPolicyHeader)	Set a referrer-policy header to make sure you do not leak user information.	0
Description: Referrer Policy is a new header that allows a site to control how much information the browser includes with navigations away from a document and should be set by all sites. https://scotthelme.co.uk/a-new-security-header-referrer-policy/.
Offenders: https://it.wikipedia.org/wiki/Facebook

Page info

Page info
Title	Facebook - Wikipedia
Generator	MediaWiki 1.45.0-wmf.23
Width	360
Height	4712
DOM elements	4262
Avg DOM depth	13
Max DOM depth	17
Iframes	0
Script tags	7
Local storage	667.4 KB
Session storage	0 b
Network Information API	4g

Resource Hints
dns-prefetch
https://meta.wikimedia.org/
https://it.wikipedia.org/wiki/auth.wikimedia.org
preconnect
https://upload.wikimedia.org/

Technologies used to build the page.

Data collected using Wappalyzer version 6.10.54. With updated code from Webappanalyzer 2024-12-27. Use --browsertime.firefox.includeResponseBodies htmlor --browsertime.chrome.includeResponseBodies htmlto help Wappalyzer find more information about technologies used.

Technology	Confidence	Category
MediaWiki	100	Wikis
PHP	100	Programming languages
Apache Traffic Server 9.2.11	100	Web servers
HSTS	100	Security

Data from run 2

Visual Metrics

Visual Metrics
First Visual Change	867 ms
Speed Index	1.591 s
Largest Image	1.000 s
Heading	867 ms
LargestContentfulPaint	2.967 s
Last Meaningful Paint	2.967 s
Largest Contentful Paint	2.967 s
Visual Complete 85%	1.200 s
Visual Complete 95%	7.067 s
Visual Complete 99%	7.067 s
Last Visual Change	7.234 s
Visual Readiness	6.367 s

Browser Metrics

Navigation Timing
backEndTime	486 ms
domContentLoadedTime	1.515 s
domInteractiveTime	1.514 s
domainLookupTime	88 ms
frontEndTime	922 ms
pageDownloadTime	136 ms
pageLoadTime	1.544 s
redirectionTime	0 ms
serverConnectionTime	200 ms
serverResponseTime	329 ms

Google Web Vitals
Time to first byte (TTFB)	486 ms
First Contentful Paint (FCP)	836 ms
Largest Contentful Paint (LCP)	1.200 s
Total Blocking Time (TBT)	881 ms

First Contentful Paint info
Elements that needed recalculate style before FCP	94
Time spent in recalculate style before FCP	46.062 ms

Extra timings
TTFB	486 ms
First Paint	836 ms
Load Event End	1.544 s
Fully loaded	2.953 s

User Timing marks
mwStartup	1.008 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	1.200 s
Element render delay	714 ms
TTFB	486 ms
Resource delay	0 ms
Resource load duration	0 ms
Elements that needed recalculate style before LCP	304
Time spent in recalculate style before LCP	79.988 ms
Load time	0 ms
*Size (widthheight)**	124475
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)>

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 duration	Render duration	PreLayout Duration	Style And Layout Duration
383.2 ms	4.5 ms	430.4 ms	422.9 ms	7.5 ms
https://it.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva
Forced Style And Layout Duration: 41 ms Invoker: FrameRequestCallback Invoker Type: user-callback Source Function Name: flushCssBuffer Window attribution: self Source char position: 3240

Blocking duration

Work duration

Render duration

PreLayout Duration

Style And Layout Duration

383.2 ms

4.5 ms

430.4 ms

422.9 ms

7.5 ms

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

Forced Style And Layout Duration: 41 ms

Invoker: FrameRequestCallback
Invoker Type: user-callback
Source Function Name: flushCssBuffer
Window attribution: self
Source char position: 3240

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
215.8 ms	234 ms	49.9 ms	33.3 ms	16.6 ms
https://it.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: 4314
https://it.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: 3240

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
147.5 ms	204.2 ms	17.5 ms	17.5 ms	0 ms
https://it.wikipedia.org/w/load.php?lang=it&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.ForeignApi%2Ccentralautologin%7Cext.checkUser.clientHints%7Cext.cite.ux-enhancements%7Cext.cx.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.cx.model%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%2CxLab%7Cext.eventLogging.metricsPlatform%7Cext.growthExperiments.SuggestedEditSession%7Cext.relatedArticles.readMore.bootstrap%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.xLab%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Ctablesorter%7Cmediawiki.DateFormatter%2CForeignApi%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.language.months%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagesummary.styles%7Cmw.cx.SiteMapper%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=11c0b
Invoker: TimerHandler:setTimeout Invoker Type: user-callback Window attribution: self Source char position: 262784

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
110 ms	77.1 ms	109 ms	0 ms	109 ms
https://it.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva
Invoker: https://it.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva Invoker Type: classic-script Window attribution: self

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
65.1 ms	134.9 ms	51 ms	35.6 ms	15.4 ms
https://it.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: 4314
https://it.wikipedia.org/w/load.php?lang=it&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.ForeignApi%2Ccentralautologin%7Cext.checkUser.clientHints%7Cext.cite.ux-enhancements%7Cext.cx.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.cx.model%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%2CxLab%7Cext.eventLogging.metricsPlatform%7Cext.growthExperiments.SuggestedEditSession%7Cext.relatedArticles.readMore.bootstrap%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.xLab%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Ctablesorter%7Cmediawiki.DateFormatter%2CForeignApi%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.language.months%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagesummary.styles%7Cmw.cx.SiteMapper%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=11c0b
Invoker: TimerHandler:setTimeout Invoker Type: user-callback Window attribution: self Source char position: 262784
https://it.wikipedia.org/w/load.php?lang=it&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.ForeignApi%2Ccentralautologin%7Cext.checkUser.clientHints%7Cext.cite.ux-enhancements%7Cext.cx.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.cx.model%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%2CxLab%7Cext.eventLogging.metricsPlatform%7Cext.growthExperiments.SuggestedEditSession%7Cext.relatedArticles.readMore.bootstrap%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.xLab%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Ctablesorter%7Cmediawiki.DateFormatter%2CForeignApi%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.language.months%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagesummary.styles%7Cmw.cx.SiteMapper%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=11c0b
Invoker: TimerHandler:setTimeout Invoker Type: user-callback Window attribution: self Source char position: 262784
https://it.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: 3240

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
61.6 ms	248.8 ms	1.6 ms	1.6 ms	0 ms
https://it.wikipedia.org/wiki/Facebook
Invoker: https://it.wikipedia.org/wiki/Facebook Invoker Type: classic-script Window attribution: self

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
58.4 ms	108.4 ms	0 ms	0 ms	0 ms
https://it.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva
Invoker: IdleRequestCallback Invoker Type: user-callback Source Function Name: flushWrites Window attribution: self Source char position: 19340

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
20.8 ms	59.1 ms	48.9 ms	47.3 ms	1.6 ms
No availible script information.

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
19.7 ms	99.4 ms	2.1 ms	2 ms	0.1 ms
https://it.wikipedia.org/w/load.php?lang=it&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.ForeignApi%2Ccentralautologin%7Cext.checkUser.clientHints%7Cext.cite.ux-enhancements%7Cext.cx.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.cx.model%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%2CxLab%7Cext.eventLogging.metricsPlatform%7Cext.growthExperiments.SuggestedEditSession%7Cext.relatedArticles.readMore.bootstrap%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.xLab%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Ctablesorter%7Cmediawiki.DateFormatter%2CForeignApi%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.language.months%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagesummary.styles%7Cmw.cx.SiteMapper%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=11c0b
Invoker: TimerHandler:setTimeout Invoker Type: user-callback Window attribution: self Source char position: 262784
https://it.wikipedia.org/w/load.php?lang=it&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.ForeignApi%2Ccentralautologin%7Cext.checkUser.clientHints%7Cext.cite.ux-enhancements%7Cext.cx.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.cx.model%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%2CxLab%7Cext.eventLogging.metricsPlatform%7Cext.growthExperiments.SuggestedEditSession%7Cext.relatedArticles.readMore.bootstrap%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.xLab%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Ctablesorter%7Cmediawiki.DateFormatter%2CForeignApi%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.language.months%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagesummary.styles%7Cmw.cx.SiteMapper%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=11c0b
Forced Style And Layout Duration: 1 ms Invoker: TimerHandler:setTimeout Invoker Type: user-callback Window attribution: self Source char position: 262784
https://it.wikipedia.org/w/load.php?lang=it&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.ForeignApi%2Ccentralautologin%7Cext.checkUser.clientHints%7Cext.cite.ux-enhancements%7Cext.cx.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.cx.model%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%2CxLab%7Cext.eventLogging.metricsPlatform%7Cext.growthExperiments.SuggestedEditSession%7Cext.relatedArticles.readMore.bootstrap%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.xLab%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Ctablesorter%7Cmediawiki.DateFormatter%2CForeignApi%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.language.months%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagesummary.styles%7Cmw.cx.SiteMapper%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=11c0b
Invoker: TimerHandler:setTimeout Invoker Type: user-callback Window attribution: self Source char position: 262784

Blocking duration	Work duration	Render duration	PreLayout Duration	Style And Layout Duration
0 ms	144.6 ms	0.7 ms	0 ms	0.7 ms
No availible script information.

Server timings

name	duration	description
cache	0	hit-front
host	0	cp3070

Custom metrics collected through JavaScript

There are no custom configured scripts.

Extra metrics collected using scripting

There are no custom extra metrics from scripting.

Visual Elements

Name	Display Time	X	Y	Width	Height
LargestImage (wikipedia-wordmark-en.svg)	1.000 s	53	18	120	18
<img src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" alt="Wikipedia" width="120" height="18" style="width: 7.5em; height: 1.125em;">
Heading	867 ms	16	75	328	37
<h1 id="firstHeading" class="firstHeading mw-first-heading"></h1>
LargestContentfulPaint	2.967 s	16	253	328	457
<p></p>

PageXray

How the page is built.

Summary
HTTP version	HTTP/2.0
Total requests	26
Total domains	3
Total transfer size	407.6 KB
Total content size	1.4 MB
Responses missing compression	6
Number of cookies	8
Third party cookies	0

Requests per response code
200	25
302	1

Largest assets on the page (by transfer size)

URL	Type	Transfer Size	Content Size
https://it.wikipedia...ia.org/w/load.php	javascript	192.5 KB	765.4 KB
https://it.wikipedia.org/wiki/Facebook	html	75.7 KB	342.3 KB
https://upload.wikim...ebook_%282%29.PNG	image	65.1 KB	64.0 KB
https://it.wikipedia...ia.org/w/load.php	javascript	20.9 KB	62.7 KB
https://it.wikipedia...ia.org/w/load.php	css	20.4 KB	152.4 KB
https://upload.wikim...book_icon.svg.png	image	4.3 KB	3.2 KB
https://it.wikipedia...a-wordmark-en.svg	svg	3.5 KB	6.0 KB
https://upload.wikim...isambigua.svg.png	image	2.6 KB	1.5 KB
https://it.wikipedia...uch/wikipedia.png	image	2.0 KB	1.3 KB
https://it.wikipedia...ia.org/w/load.php	javascript	1.9 KB	2.2 KB
https://it.wikipedia...con/wikipedia.ico	favicon	1.8 KB	2.7 KB
https://it.wikipedia...dia.org/w/api.php	json	1.8 KB	271 B
https://auth.wikimed...gin/checkLoggedIn	javascript	1.5 KB	294 B
https://it.wikipedia...ia.org/w/load.php	svg	1.3 KB	707 B
https://it.wikipedia...ia.org/w/load.php	svg	1.2 KB	585 B
https://it.wikipedia...ia.org/w/load.php	svg	1.2 KB	414 B
https://it.wikipedia...ia.org/w/load.php	svg	1.1 KB	318 B
https://it.wikipedia...ia.org/w/load.php	svg	1.1 KB	318 B
https://it.wikipedia...ia.org/w/load.php	svg	1.1 KB	326 B
https://it.wikipedia...ia.org/w/load.php	svg	1.1 KB	334 B

Requests and sizes per content type

Content	Transfer Size	Content Size	Requests
html	75.7 KB	342.3 KB	1
css	20.4 KB	152.4 KB	1
javascript	216.7 KB	830.6 KB	4
image	74.1 KB	70.0 KB	4
svg	17.1 KB	10.4 KB	13
json	1.8 KB	271 B	1
favicon	1.8 KB	2.7 KB	1
Total	407.6 KB	1.4 MB	25

Data per domain

Domain	Total download time	Transfer Size	Content Size	Requests
it.wikipedia.org	4.968 s	334.1 KB	1.3 MB	22
upload.wikimedia.org	1.916 s	72.0 KB	68.7 KB	3
auth.wikimedia.org	329 ms	1.5 KB	294 B	1

Expires and last modified statistics

type	min	median	max
Expires	0 seconds	4 weeks	1 year
Last modified	1 week	3 weeks	3 years

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	1.8 KB	1
favicon	1.8 KB	1
Total	5.6 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	0 b	0
image	2.0 KB	1
font	0 b	0
json	1.8 KB	1
favicon	1.8 KB	1
Total	5.6 KB	3

Render blocking requests

Render blocking information directly from Chrome.

Blocking	In body parser blocking	Potentially blocking
1	0	1

Render information

URL	Type
https://it.wikipedia...ia.org/w/load.php	non_blocking
https://it.wikipedia...ia.org/w/load.php	potentially_blocking
https://it.wikipedia...ia.org/w/load.php	blocking
https://it.wikipedia...ia.org/w/load.php	non_blocking
https://auth.wikimed...gin/checkLoggedIn	non_blocking
https://it.wikipedia...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		881
Max Potential First Input Delay		441
Long Tasks before First Paint	1	122
Long Tasks before First Contentful Paint	1	122
Long Tasks before Largest Contentful Paint	3	292
Long Tasks after Load Event End	8	1196
Total Long Tasks	12	1553

CPU last long task happened at 3.638 s

Individual Long Tasks

name	startTime	duration	containerType
unknown	694	122	window
self	1005	51	window
unknown	1072	119	window
unknown	1408	65	window
self	1551	215	window
self	1768	61	window
self	1929	64	window
self	1994	60	window
self	2084	67	window
self	2165	441	window
self	2630	180	window
self	3638	108	window

CPU time spent

Calculated using Tracium.

Categories (ms)
parseHTML	183
styleLayout	401
paintCompositeRender	62
scriptParseCompile	13
scriptEvaluation	1290
garbageCollection	19
other	715

Events (ms)
FunctionCall	1078
RunTask	468
UpdateLayoutTree	209
Layout	187
ParseHTML	167
CpuProfiler::StartProfiling	84
v8.run	84
V8.HandleInterrupts	57
Paint	36
DecodedDataDocumentParser::AppendBytes	32
DocumentLoader::BodyLoadingFinished	26
DocumentLoader::CommitNavigation	23
PaintImage	19
V8.BytecodeBudgetInterrupt	18
Layerize	18
PrePaint	17
ParseAuthorStyleSheet	16
RunMicrotasks	15
EventDispatch	14
v8.compile	13

Time spent per request

URL	CPU time (ms)
https://it.wikipedia.org/w/load.php?lang=it&modules=startup&only=scripts&raw=1&skin=minerva	1314
https://it.wikipedia.org/w/load.php?lang=it&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.ForeignApi%2Ccentralautologin%7Cext.checkUser.clientHints%7Cext.cite.ux-enhancements%7Cext.cx.entrypoints.languagesearcher.init%7Cext.cx.entrypoints.mffrequentlanguages%7Cext.cx.eventlogging.campaigns%7Cext.cx.model%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%2CxLab%7Cext.eventLogging.metricsPlatform%7Cext.growthExperiments.SuggestedEditSession%7Cext.relatedArticles.readMore.bootstrap%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.xLab%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Ctablesorter%7Cmediawiki.DateFormatter%2CForeignApi%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.language.months%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmobile.codex.styles%7Cmobile.init%2Cstartup%7Cmobile.pagesummary.styles%7Cmw.cx.SiteMapper%7Cmw.externalguidance.init%7Cskins.minerva.scripts&skin=minerva&version=11c0b	466
https://it.wikipedia.org/wiki/Facebook	14

Page summary

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

Summary

Timings Summary

Waterfall

Video

Filmstrip

Coach

Coach score

Performance advice (82)

Best practice advice (89)

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

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

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