Page summary

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

Tested 2025-12-07 11:00:24 using Chrome 142.0.7444.59 (runtime settings).

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

Summary

MetricValue
Page metrics
Performance Score71
Total Page Transfer Size981.7 KB
Requests43
Timing metrics
TTFB [median]413 ms
First Paint [median]768 ms
Fully Loaded [median]4.478 s
Google Web Vitals
TTFB [median]413 ms
First Contentful Paint (FCP) [median]768 ms
Largest Contentful Paint (LCP) [median]1.136 s
Cumulative Layout Shift (CLS) [median]0.55
Interaction To Next Paint (INP) [median]104 ms
Total Blocking Time [median]1.974 s
Max Potential FID [median]1.005 s
CPU metrics
CPU long tasks [median]13
CPU longest task duration1.100 s
CPU last long task happens at11.264 s
Visual Metrics
First Visual Change [median]800 ms
Speed Index [median]6.788 s
Visual Complete 85% [median]11.867 s
Visual Complete 99% [median]14.134 s
Last Visual Change [median]14.700 s
Screenshot of run 3

Timings Summary

Metricminmedianmeanmax
Visual Metrics
FirstVisualChange766 ms800 ms789 ms800 ms
LastVisualChange14.666 s14.700 s14.767 s14.934 s
SpeedIndex6.694 s6.788 s6.774 s6.839 s
LargestImage12.400 s12.400 s12.400 s12.400 s
Heading12.233 s12.300 s12.311 s12.400 s
LastMeaningfulPaint12.233 s12.300 s12.311 s12.400 s
VisualReadiness13.900 s13.900 s13.978 s14.134 s
VisualComplete8511.800 s11.867 s11.878 s11.967 s
VisualComplete9512.300 s12.333 s12.344 s12.400 s
VisualComplete9914.100 s14.134 s14.178 s14.300 s
Google Web Vitals
Time To First Byte (TTFB)412 ms413 ms419 ms431 ms
Largest Contentful Paint (LCP)1.036 s1.136 s1.108 s1.152 s
First Contentful Paint (FCP)768 ms768 ms773 ms784 ms
Cumulative Layout Shift (CLS)0.54690.55040.54990.5524
More metrics
firstPaint768 ms768 ms773 ms784 ms
loadEventEnd2.909 s2.911 s2.920 s2.941 s
User Timing
mwStartup767 ms785 ms863 ms1.038 s
mwCentralNoticeBanner2.737 s2.742 s2.749 s2.769 s
CPU
Total Blocking Time1.897 s1.974 s1.983 s2.078 s
Max Potential FID969 ms1.005 s1.025 s1.100 s
CPU long tasks 13131314
CPU last long task happens at11.218 s11.264 s11.277 s11.350 s
| Waterfall | | Download HAR | 

Waterfall

Run 3 SpeedIndex median

| Video | Download | 

Video

Download video
| Filmstrip | 

Filmstrip

Use--filmstrip.showAll to show all filmstrips.

0 s
0.7 sCPU Long Task duration 93 ms
0.8 sCPU Long Task duration 55 msmwStartup 767 msFirst Contentful Paint 768 msFirst Visual Change 800 ms
0.9 s
1 sCPU Long Task duration 155 ms
1.1 s
1.2 sLCP <P> 1.136 sCPU Long Task duration 77 ms
1.3 sCPU Long Task duration 362 ms
1.4 s
1.5 s
1.6 s
1.7 s
1.8 sCPU Long Task duration 219 ms
2.1 sCPU Long Task duration 62 ms
2.2 sCPU Long Task duration 71 ms
2.3 sDOM Content Loaded Time 2.265 sCPU Long Task duration 170 ms
2.6 s
2.7 sCPU Long Task duration 104 ms
2.8 smwCentralNoticeBanner 2.742 s
2.9 s
3 sPage Load Time 2.909 sCPU Long Task duration 1.005 s
3.3 s
4 sCPU Long Task duration 110 ms
4.1 s
4.5 sFully Loaded 4.478 s
9.5 s
9.6 s
9.7 s
9.8 s
10.9 s
11.1 s
11.3 sCPU Long Task duration 189 ms
11.5 sLayout Shift 0.05625 11.468 sLayout Shift 0.01987 11.499 s
11.6 sLayout Shift 0.02656 11.531 sLayout Shift 0.03364 11.566 s
11.7 sLayout Shift 0.04531 11.603 sLayout Shift 0.08750 11.638 sLayout Shift 0.05781 11.672 s
11.8 sLayout Shift 0.04629 11.708 sLayout Shift 0.03594 11.742 sLayout Shift 0.02813 11.780 s
11.9 sLayout Shift 0.02241 11.814 sLayout Shift 0.01875 11.844 sVisual Complete 85% 11.867 sLayout Shift 0.01563 11.873 s
12 sLayout Shift 0.00662 11.901 sLayout Shift 0.01160 11.930 sLayout Shift 0.01094 11.967 sLayout Shift 0.00828 11.996 s
12.1 sLayout Shift 0.00703 12.026 sLayout Shift 0.00625 12.059 sLayout Shift 0.00498 12.095 s
12.2 sLayout Shift 0.00257 12.130 s
12.3 sVisual Complete 95% 12.300 sHeading 12.300 s
12.4 s
12.5 s
12.6 s
12.7 s
12.8 s
13 s
13.1 s
13.2 s
13.3 s
13.4 s
13.5 s
13.6 s
13.7 s
13.8 s
13.9 s
14 s
14.1 s
14.2 sVisual Complete 99% 14.134 s
14.3 s
14.4 s
14.5 s
14.6 s
14.7 sLast Visual Change 14.700 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 8.1.3.

I am the coach

Coach score

Performance advice (71)

TitleAdviceScore
Avoid slowing down the critical rendering path (avoidRenderBlocking)The page has 2 blocking requests and 0 in body parser blocking (0 JavaScript and 2 CSS). There are 1 potentially render blocking requests. You need to verify if it is render blocking: https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva99
Description: The critical rendering path is what the browser needs to do to start rendering the page. Every file requested inside of the head element will postpone the rendering of the page, because the browser need to do the request. Avoid loading JavaScript synchronously inside of the head (you should not need JavaScript to render the page), request files from the same domain as the main document (to avoid DNS lookups) and inline CSS for really fast rendering and a short rendering path.
Offenders:
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • Don't scale images in the browser (avoidScalingImages)The page has 5 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.50
    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://upload.wikimedia.org/wikipedia/donate/f/f5/Jimmy-wales-cropped.jpg
  • https://en.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Philip_Pierre_2025_%28...%28cropped%29.jpg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/7/72/McCULLOCH%2C_Hugh-Trea...d_portrait%29.jpg
  • https://en.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 2.775 s. The total blocking time is 2.078 s and 2 long tasks before first contentful paint with total time of 147 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
  • unknown
  • unknown
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • self
  • Avoid doing redirects (assetsRedirects)The page has 1 redirect. 1 of the redirects are from the base domain, please fix them! 90
    Description: A redirect is one extra step for the user to download the asset. Avoid that if you want to be fast. Redirects are even more of a showstopper on mobile.
    Offenders:
  • https://en.wikipedia.org/wiki/Special:CentralAutoLogin/start?useformat=mobile&type=script&usesul3=1
  • Avoid extra requests by setting cache headers (cacheHeaders)The page has 22 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 632.5 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/6/6a/2011_TEB_Free_361_Tati...Maxim_Trankov.jpg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/3/39/Daniela_Melchior_-_202...%28cropped%29.jpg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Philip_Pierre_2025_%28...%28cropped%29.jpg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/5/5a/Tiberios_II_%28obverse...%28obverse%29.jpg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/7/72/McCULLOCH%2C_Hugh-Trea...d_portrait%29.jpg
  • https://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/120px-Commons-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/a/a6/MediaWiki-2020-icon.sv...2020-icon.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/7/75/Wikimedia_Community_Lo...nity_Logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikibooks-logo.svg/120...ooks-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/120p...data-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/120p...news-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikiquote-logo.svg/120...uote-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12...urce-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikispecies-logo.svg/1...cies-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Wikiversity_logo_2017....logo_2017.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Wikivoyage-Logo-v3-ico...o-v3-icon.svg.png
  • https://upload.wikimedia.org/wikipedia/en/thumb/0/06/Wiktionary-logo-v2.svg/120p...y-logo-v2.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Wiktionary-logo.svg/12...nary-logo.svg.png
  • https://en.wikipedia.org/wiki/Special:CentralAutoLogin/start?useformat=mobile&type=script&usesul3=1
  • https://meta.wikimedia.org/w/index.php...a.org/w/index.php
  • https://auth.wikimedia.org/metawiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • https://upload.wikimedia.org/wikipedia/donate/f/f5/Jimmy-wales-cropped.jpg
  • Long cache headers is good (cacheHeadersLong)The page has 4 requests that have a shorter cache time than 30 days (but still a cache time).96
    Description: Setting a cache header is good. Setting a long cache header (at least 30 days) is even better beacause then it will stay long in the browser cache. But what do you do if that asset change? Rename it and the browser will pick up the new version.
    Offenders:
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva
  • https://en.wikipedia.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=minerva
  • https://en.wikipedia.org/w/api.php?action=webapp-manifest
  • Total JavaScript size shouldn't be too big (javascriptSize)The total JavaScript transfer size is 342.1 kB and the uncompressed size is 1.2 MB. This is totally crazy! There is really room for improvement here. 0
    Description: A lot of JavaScript often means you are downloading more than you need. How complex is the page and what can the user do on the page? Do you use multiple JavaScript frameworks?
    Offenders:
    URLTransfer sizeContent size
    https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva 21.0 KB62.9 KB
    https://en.wikipedia.org/w/load.php?lang=en&modules=ext.gadget.switcher&skin=minerva&version=1knie 1.5 KB1.3 KB
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 8.8 KB24.7 KB
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 189.1 KB758.3 KB
    https://meta.wikimedia.org/w/index.php...a.org/w/index.php 54.3 KB204.8 KB
    https://auth.wikimedia.org/metawiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn 1.4 KB254 B
    https://en.wikipedia.org/w/load.php?lang=en&modules=vue&skin=minerva&version=1hv35 57.8 KB156.2 KB
    Make each CSS response small (optimalCssSize)https://en.wikipedia.org/w/load.php?lang=en&modules=ext.wikimediamessages.styles%7Cmediawiki.hlist%7Cmobile.init.styles%7Cskins.minerva.amc.styles%7Cskins.minerva.codex.styles%7Cskins.minerva.content.styles.images%7Cskins.minerva.icons%2Cstyles%7Cskins.minerva.mainPage.styles%7Cwikibase.client.init&only=styles&skin=minerva size is 20 kB (19951) and that is bigger than the limit of 14.5 kB. Try to make the CSS files fit into 14.5 KB.90
    Description: Make CSS responses small to fit into the magic number TCP window size of 14.5 KB. The browser can then download the CSS faster and that will make the page start rendering earlier.
    Offenders:
    URLTransfer sizeContent size
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 19.5 KB145.7 KB
    Total page size shouldn't be too big (pageSize)The page total transfer size is 1 MB, which is more than the coach limit of 1 MB. That is really big and you need to make it smaller.0
    Description: Avoid having pages that have a transfer size over the wire of more than 2 MB (desktop) and 1 MB (mobile) because that is really big and will hurt performance and will make the page expensive for the user if she/he pays for the bandwidth.
    Offenders:
    URLTransfer sizeContent size
    https://en.wikipedia.org/wiki/Main_Page 46.2 KB203.1 KB
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 19.5 KB145.7 KB
    https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva 21.0 KB62.9 KB
    https://en.wikipedia.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=minerva 1.6 KB2.0 KB
    https://upload.wikimedia.org/wikipedia/commons/thumb/6/6a/2011_TEB_Free_361_Tati...Maxim_Trankov.jpg 31.7 KB30.6 KB
    https://upload.wikimedia.org/wikipedia/commons/thumb/3/39/Daniela_Melchior_-_202...%28cropped%29.jpg 15.7 KB14.6 KB
    https://upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Philip_Pierre_2025_%28...%28cropped%29.jpg 23.7 KB22.6 KB
    https://upload.wikimedia.org/wikipedia/commons/thumb/5/5a/Tiberios_II_%28obverse...%28obverse%29.jpg 42.0 KB40.9 KB
    https://en.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg 3.5 KB6.0 KB
    https://upload.wikimedia.org/wikipedia/commons/thumb/7/72/McCULLOCH%2C_Hugh-Trea...d_portrait%29.jpg 318.9 KB317.6 KB
    https://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/120px-Commons-logo.svg.png 4.3 KB3.2 KB
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 1.1 KB224 B
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 1.1 KB257 B
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 1.1 KB417 B
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 1.1 KB334 B
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 1.1 KB285 B
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 1.2 KB585 B
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 1.1 KB267 B
    https://upload.wikimedia.org/wikipedia/commons/thumb/a/a6/MediaWiki-2020-icon.sv...2020-icon.svg.png 9.3 KB8.2 KB
    https://upload.wikimedia.org/wikipedia/commons/thumb/7/75/Wikimedia_Community_Lo...nity_Logo.svg.png 6.0 KB4.9 KB
    https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikibooks-logo.svg/120...ooks-logo.svg.png 5.8 KB4.7 KB
    https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/120p...data-logo.svg.png 1.4 KB270 B
    https://upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/120p...news-logo.svg.png 8.5 KB7.4 KB
    https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikiquote-logo.svg/120...uote-logo.svg.png 6.0 KB4.9 KB
    https://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12...urce-logo.svg.png 6.2 KB5.1 KB
    https://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikispecies-logo.svg/1...cies-logo.svg.png 10.3 KB9.3 KB
    https://upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Wikiversity_logo_2017....logo_2017.svg.png 2.3 KB1.2 KB
    https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Wikivoyage-Logo-v3-ico...o-v3-icon.svg.png 2.4 KB1.3 KB
    https://upload.wikimedia.org/wikipedia/en/thumb/0/06/Wiktionary-logo-v2.svg/120p...y-logo-v2.svg.png 6.7 KB5.6 KB
    https://upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Wiktionary-logo.svg/12...nary-logo.svg.png 16.1 KB15.0 KB
    https://en.wikipedia.org/w/load.php?lang=en&modules=ext.gadget.switcher&skin=minerva&version=1knie 1.5 KB1.3 KB
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 8.8 KB24.7 KB
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 189.1 KB758.3 KB
    https://en.wikipedia.org/wiki/Special:CentralAutoLogin/start?useformat=mobile&type=script&usesul3=1 N/A0 b
    https://meta.wikimedia.org/w/index.php...a.org/w/index.php 54.3 KB204.8 KB
    https://auth.wikimedia.org/metawiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn 1.4 KB254 B
    https://en.wikipedia.org/w/load.php...ia.org/w/load.php 1.1 KB318 B
    https://en.wikipedia.org/w/load.php?lang=en&modules=vue&skin=minerva&version=1hv35 57.8 KB156.2 KB
    https://en.wikipedia.org/beacon/impression...beacon/impression 611 B0 b
    https://upload.wikimedia.org/wikipedia/donate/f/f5/Jimmy-wales-cropped.jpg 44.5 KB43.4 KB
    https://en.wikipedia.org/w/api.php?action=webapp-manifest 1.8 KB263 B
    https://en.wikipedia.org/static/favicon/wikipedia.ico 1.8 KB2.7 KB
    https://en.wikipedia.org/static/apple-touch/wikipedia.png 2.0 KB1.3 KB
    Don't use private headers on static content (privateAssets)The page has 4 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.70
    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.wikipedia.org/wiki/Main_Page
  • https://en.wikipedia.org/wiki/Special:CentralAutoLogin/start?useformat=mobile&type=script&usesul3=1
  • https://meta.wikimedia.org/w/index.php...a.org/w/index.php
  • https://auth.wikimedia.org/metawiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • Best practice advice (73)

    TitleAdviceScore
    Cumulative Layout Shift (cumulativeLayoutShift)You have a poor cumulative layout shift score (0.5504). 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.wikipedia...ia.org/w/load.php has a header sourcemap that is 1200 characters long. 99
    Description: Do not send response headers that are too long.
    Offenders:
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • Avoid unnecessary headers (unnecessaryHeaders)There are 19 responses that sets both a max-age and expires header. There are 43 responses that sets a server header. 38
    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.wikipedia.org/wiki/Main_Page
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva
  • https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva
  • https://en.wikipedia.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=minerva
  • https://en.wikipedia.org/w/load.php?lang=en&modules=site.styles&only=styles&skin=minerva
  • https://upload.wikimedia.org/wikipedia/commons/thumb/6/6a/2011_TEB_Free_361_Tati...Maxim_Trankov.jpg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/3/39/Daniela_Melchior_-_202...%28cropped%29.jpg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Philip_Pierre_2025_%28...%28cropped%29.jpg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/5/5a/Tiberios_II_%28obverse...%28obverse%29.jpg
  • https://en.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg
  • https://en.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg
  • https://upload.wikimedia.org/wikipedia/commons/thumb/7/72/McCULLOCH%2C_Hugh-Trea...d_portrait%29.jpg
  • https://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/120px-Commons-logo.svg.png
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://upload.wikimedia.org/wikipedia/commons/thumb/a/a6/MediaWiki-2020-icon.sv...2020-icon.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/7/75/Wikimedia_Community_Lo...nity_Logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikibooks-logo.svg/120...ooks-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/120p...data-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/120p...news-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikiquote-logo.svg/120...uote-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12...urce-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikispecies-logo.svg/1...cies-logo.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Wikiversity_logo_2017....logo_2017.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Wikivoyage-Logo-v3-ico...o-v3-icon.svg.png
  • https://upload.wikimedia.org/wikipedia/en/thumb/0/06/Wiktionary-logo-v2.svg/120p...y-logo-v2.svg.png
  • https://upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Wiktionary-logo.svg/12...nary-logo.svg.png
  • https://en.wikipedia.org/w/load.php?lang=en&modules=ext.gadget.switcher&skin=minerva&version=1knie
  • https://en.wikipedia.org/w/load.php?lang=en&modules=ext.gadget.switcher&skin=minerva&version=1knie
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/wiki/Special:CentralAutoLogin/start?useformat=mobile&type=script&usesul3=1
  • https://meta.wikimedia.org/w/index.php...a.org/w/index.php
  • https://auth.wikimedia.org/metawiki/wiki/Special:CentralAutoLogin/checkLoggedIn...gin/checkLoggedIn
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php...ia.org/w/load.php
  • https://en.wikipedia.org/w/load.php?lang=en&modules=vue&skin=minerva&version=1hv35
  • https://en.wikipedia.org/w/load.php?lang=en&modules=vue&skin=minerva&version=1hv35
  • https://en.wikipedia.org/beacon/impression...beacon/impression
  • https://upload.wikimedia.org/wikipedia/donate/f/f5/Jimmy-wales-cropped.jpg
  • https://en.wikipedia.org/w/api.php?action=webapp-manifest
  • https://en.wikipedia.org/w/api.php?action=webapp-manifest
  • https://en.wikipedia.org/static/favicon/wikipedia.ico
  • https://en.wikipedia.org/static/favicon/wikipedia.ico
  • https://en.wikipedia.org/static/apple-touch/wikipedia.png
  • https://en.wikipedia.org/static/apple-touch/wikipedia.png
  • Privacy advice (88)

    TitleAdviceScore
    Use a good Content-Security-Policy header to make sure you you avoid Cross Site Scripting (XSS) attacks. (contentSecurityPolicyHeader)Set a Content-Security-Policy header to make sure you are not open for Cross Site Scripting (XSS) attacks. You can start with setting a Content-Security-Policy-Report-Only header, that will only report the violation, not stop the download.0
    Description: Content Security Policy is delivered via a HTTP response header, and defines approved sources of content that the browser may load. It can be an effective countermeasure to Cross Site Scripting (XSS) attacks and is also widely supported and usually easily deployed. https://scotthelme.co.uk/content-security-policy-an-introduction/.
    Offenders:
  • https://en.wikipedia.org/wiki/Main_Page
  • Set a referrer-policy header to make sure you do not leak user information. (referrerPolicyHeader)Set a referrer-policy header to make sure you do not leak user information.0
    Description: Referrer Policy is a new header that allows a site to control how much information the browser includes with navigations away from a document and should be set by all sites. https://scotthelme.co.uk/a-new-security-header-referrer-policy/.
    Offenders:
  • https://en.wikipedia.org/wiki/Main_Page
  • Page info

    Page info
    TitleWikipedia, the free encyclopedia
    GeneratorMediaWiki 1.46.0-wmf.5
    Width360
    Height8439
    DOM elements2357
    Avg DOM depth13
    Max DOM depth23
    Iframes0
    Script tags8
    Local storage685.0 KB
    Session storage63 B
    Network Information API4g
    Resource Hints
    dns-prefetch
    https://meta.wikimedia.org/
    https://en.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.

    TechnologyConfidenceCategory
    MediaWiki 100  Wikis
    PHP 100  Programming languages
    Apache Traffic Server 9.2.11100  Web servers
    HSTS 100  Security
    | Browser metrics | Visual Metrics | Largest Contentful Paint | Cumulative Layout Shift | Long Aninimation Frames | Visual Elements | Server timings | 

    Data from run 3

    Visual Metrics

    Browser Metrics

    Google Web Vitals
    Time to first byte (TTFB)413 ms
    First Contentful Paint (FCP)768 ms
    Largest Contentful Paint (LCP)1.136 s
    Cumulative Layout Shift (CLS)0.55
    Total Blocking Time (TBT)1.974 s
    First Contentful Paint info
    Elements that needed recalculate style before FCP77
    Time spent in recalculate style before FCP39.1 ms
    Extra timings
    TTFB413 ms
    First Paint768 ms
    Load Event End2.911 s
    Fully loaded4.478 s
    User Timing marks
    mwStartup767 ms
    mwCentralNoticeBanner2.742 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 1.136 s
    Element render delay723 ms
    TTFB413 ms
    Resource delay0 ms
    Resource load duration0 ms
    Elements that needed recalculate style before LCP444
    Time spent in recalculate style before LCP87.833 ms
    Load time0 ms
    Size (width*height)116560
    DOM path
    div#mw-mf-viewport > div#mw-mf-page-center > main#content > div#bodyContent > div#mw-content-text > div:eq(0) > section#mf-section-0 > div#mp-upper > div#mp-left > div#mp-tfa > p> div#mw-mf-viewport > div#mw-mf-page-center > main#content > div#bodyContent > div#mw-content-text > div:eq(0) > section#mf-section-0 > div#mp-upper > div#mp-left > div#mp-tfa > p>
    LCP

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

    Detected Cumulative Layout Shift

    0.55235 cumulative layout shift collected from the Cumulative Layout Shift API.

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

    ScoreHTML Element
    0.08750<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
    0.05625<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
    0.04629<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
    0.04531<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
    0.02241<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
    0.01987<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
    0.01875<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
    0.01563<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
    0.01160<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
    0.00828<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
    0.00703<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
    0.00662<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
    0.00498<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
    0.00257<div id="wmde-banner-app" data-v-app=""></div>
    body > div#wmde-banner-app
    Layout shift

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

    Long Animation Frames

    Read more about the Long Animation Frames API here here.

    The top 10 longest animation frames entries

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    976.7 ms1.006 s20.8 ms12.8 ms8 ms
    https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva

    Forced Style And Layout Duration: 480 ms

    Invoker:  IdleRequestCallback
    Invoker Type: user-callback
    Source Function Name:  doPropagation
    Window attribution: self
    Source char position: 4314

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    303.3 ms43.4 ms342.8 ms342 ms0.8 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    214.2 ms221.2 ms44.5 ms34.8 ms9.7 ms
    https://en.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: 4314

    https://en.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: 3240

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    142.1 ms38 ms160.8 ms104.6 ms56.2 ms
    https://en.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%2CstartUp%7Cext.centralauth.ForeignApi%2Ccentralautologin%7Cext.checkUser.clientHints%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.urlShortener.toolbar%7Cext.wikimediaEvents.xLab%7Cjquery%2Coojs%2Csite%7Cjquery.client%2CtextSelection%7Cmediawiki.DateFormatter%2CForeignApi%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%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%7Cwikibase.databox.fromWikidata&skin=minerva&version=wndx7

    Invoker:  #document.onDOMContentLoaded
    Invoker Type: event-listener
    Source Function Name:  completed
    Window attribution: self
    Source char position: 280173

    https://en.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: 3240

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    140.9 ms189.7 ms1.2 ms0 ms1.2 ms

    Forced Style And Layout Duration: 178 ms

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 69797

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    102.6 ms27.3 ms142 ms0 ms142 ms
    No availible script information.
    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    76.2 ms86.3 ms63.4 ms53.3 ms10.1 ms
    https://en.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: 4314

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

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

    https://en.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: 3240

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    60.8 ms110.8 ms0 ms0 ms0 ms
    https://en.wikipedia.org/w/load.php?lang=en&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 durationRender durationPreLayout DurationStyle And Layout Duration
    57.8 ms107.2 ms3 ms0 ms3 ms
    https://en.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%2CstartUp%7Cext.centralauth.ForeignApi%2Ccentralautologin%7Cext.checkUser.clientHints%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.urlShortener.toolbar%7Cext.wikimediaEvents.xLab%7Cjquery%2Coojs%2Csite%7Cjquery.client%2CtextSelection%7Cmediawiki.DateFormatter%2CForeignApi%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%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%7Cwikibase.databox.fromWikidata&skin=minerva&version=wndx7

    Invoker:  TimerHandler:setTimeout
    Invoker Type: user-callback
    Window attribution: self
    Source char position: 277330

    Blocking duration Work durationRender durationPreLayout DurationStyle And Layout Duration
    35.2 ms266.7 ms1.7 ms0.8 ms0.9 ms
    https://en.wikipedia.org/wiki/Main_Page

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

    Server timings

    namedurationdescription
    cache0hit-front
    host0cp3070

    Custom metrics collected through JavaScript

    There are no custom configured scripts.

    Extra metrics collected using scripting

    There are no custom extra metrics from scripting.

    Visual Elements

    NameDisplay TimeX YWidthHeight
    LargestImage (250px-2011_TEB_Free_361_Tatiana_Volosozhar_Maxim_Trankov.jpg) 25 626 171 114
    <img alt="Trankov and Volosozhar, the pairs champions" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6a/2011_TEB_Free_361_Tatiana_Volosozhar_Maxim_Trankov.jpg/250px-2011_TEB_Free_361_Tatiana_Volosozhar_Maxim_Trankov.jpg" decoding="async" width="171" height="114" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6a/2011_TEB_Free_361_Tatiana_Volosozhar_Maxim_Trankov.jpg/330px-2011_TEB_Free_361_Tatiana_Volosozhar_Maxim_Trankov.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6a/2011_TEB_Free_361_Tatiana_Volosozhar_Maxim_Trankov.jpg/500px-2011_TEB_Free_361_Tatiana_Volosozhar_Maxim_Trankov.jpg 2x" data-file-width="2374" data-file-height="1584">
    Heading12.300 s 48 434 256 28
    <h1 id="Welcome_to_Wikipedia"></h1>
    LargestContentfulPaint 25 618 310 747
    <p></p>
    | Summary  | Largest responses  | Requests and sizes per content type  | Data per domain | Expires and last modified statistics  | Requests loaded after onLoad event  | Render blocking requests  | 

    PageXray

    How the page is built.

    Summary
    HTTP versionHTTP/2.0
    Total requests43
    Total domains4
    Total transfer size981.7 KB
    Total content size2.1 MB
    Responses missing compression8
    Number of cookies26
    Third party cookies0
    Requests per response code
    20041
    2041
    3021

    Largest assets on the page (by transfer size)

    Requests and sizes per content type

    ContentHeader SizeTransfer SizeContent SizeRequests
    html0 b46.2 KB203.1 KB1
    css0 b21.1 KB147.7 KB2
    javascript0 b334.0 KB1.2 MB7
    image0 b563.9 KB541.9 KB20
    svg0 b12.3 KB8.6 KB9
    plain0 b611 B0 b1
    json0 b1.8 KB263 B1
    favicon0 b1.8 KB2.7 KB1
    Total0 b981.7 KB2.1 MB42

    Data per domain

    DomainTotal download timeTransfer SizeContent SizeRequests
    en.wikipedia.org3.711 s364.1 KB1.3 MB22
    upload.wikimedia.org14.488 s561.9 KB540.6 KB19
    meta.wikimedia.org149 ms54.3 KB204.8 KB1
    auth.wikimedia.org215 ms1.4 KB254 B1

    Expires and last modified statistics

    typeminmedianmax
    Expires0 seconds0 seconds1 year
    Last modified20 seconds14 weeks5 years

    Requests loaded after onLoad event

    Included requests done after load event end.

    ContentTransfer SizeRequests
    html0 b0
    css0 b0
    javascript0 b0
    image46.5 KB2
    font0 b0
    json1.8 KB1
    favicon1.8 KB1
    Total50.1 KB4

    Requests loaded after onContentLoad

    Includes requests done after DOM content loaded.

    ContentTransfer SizeRequests
    html0 b0
    css0 b0
    javascript57.8 KB1
    image46.5 KB2
    font0 b0
    plain611 B1
    json1.8 KB1
    favicon1.8 KB1
    Total108.5 KB6

    Render blocking requests

    Render blocking information directly from Chrome.

    BlockingIn body parser blockingPotentially blocking
    201

    Render information

    CPU Long Tasks | CPU Time Spent | CPU Time Spent Per Request | 

    CPU

    Download the Chrome trace log and drag and drop it into Developer Tools / Performance in Chrome.

    Long Tasks

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

    TypeQuantityTotal duration (ms)
    Total Blocking Time 1974
    Max Potential First Input Delay 1005
    Long Tasks before First Paint2148
    Long Tasks before First Contentful Paint2148
    Long Tasks before Largest Contentful Paint3303
    Long Tasks after Load Event End31304
    Total Long Tasks132672

    CPU last long task happened at 11.264 s

    Individual Long Tasks

    namestartTimedurationcontainerIdcontainerNamecontainerSrccontainerType
    unknown66693window
    self76555window
    unknown968155window
    unknown115877window
    unknown1277362window
    self1771219window
    self209162window
    self217771window
    self2298170window
    self2648104window
    self29221005window
    self3997110window
    self11264189window

    CPU time spent

    Calculated using Tracium.

    Categories (ms)
    parseHTML179
    styleLayout1739
    paintCompositeRender644
    scriptParseCompile40
    scriptEvaluation1499
    garbageCollection13
    other1781
    Events (ms)
    FunctionCall1235
    RunTask955
    UpdateLayoutTree917
    Layout820
    Paint474
    PrePaint328
    Layerize183
    ParseHTML163
    PaintImage112
    v8.run94
    Commit91
    CpuProfiler::StartProfiling82
    RunMicrotasks56
    V8.HandleInterrupts48
    v8.compile40
    IntersectionObserverController::computeIntersections37
    HitTest29
    HTMLDocumentParser::MaybeFetchQueuedPreloads25
    DecodedDataDocumentParser::AppendBytes23
    UpdateLayer20
    DocumentLoader::CommitNavigation17
    EventDispatch16
    ParseAuthorStyleSheet16
    DocumentLoader::BodyLoadingFinished15
    v8.callFunction14

    Time spent per request

    URLCPU time (ms)
    https://en.wikipedia.org/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=minerva1551
    https://en.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%2CstartUp%7Cext.centralauth.ForeignApi%2Ccentralautologin%7Cext.checkUser.clientHints%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.urlShortener.toolbar%7Cext.wikimediaEvents.xLab%7Cjquery%2Coojs%2Csite%7Cjquery.client%2CtextSelection%7Cmediawiki.DateFormatter%2CForeignApi%2CString%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%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%7Cwikibase.databox.fromWikidata&skin=minerva&version=wndx7340
    https://meta.wikimedia.org/w/index.php?title=Special:BannerLoader&campaign=WMDE_FR_2025_Mobile_EN_02&banner=WMDE_FR_2025_Mobile_EN_02_ctrl&uselang=en&debug=false109
    https://en.wikipedia.org/wiki/Main_Page27