1 page analysed for https://en.wikipedia.org/wiki/...

Tested 2026-09-24 03:30:19 using Firefox (runtime settings)

The top lists point out the specific files to fix first: the largest and slowest assets across all tested pages, and the assets returning visitors have to download again.

Largest JavaScript files

10 files

Every JavaScript byte is downloaded, parsed and executed on the main thread, so trimming the biggest bundles pays off twice.

urltime since last modifiedcache timetransfersize
https://en.wikipedia...ia.org/w/load.php → run-1 second5 minutes22.7 KB0 b
https://en.wikipedia...ia.org/w/load.php → run-1 second4 weeks8.1 KB0 b
https://en.wikipedia...ia.org/w/load.php → run-1 second4 weeks18.4 KB0 b
https://en.wikipedia...ia.org/w/load.php → run-1 second4 weeks208.8 KB0 b
https://en.wikipedia...ia.org/w/load.php → run-1 second4 weeks26.3 KB0 b
https://en.wikipedia...ia.org/w/load.php → run-1 second4 weeks3.0 KB0 b
https://auth.wikimed...gin/checkLoggedIn → run-1 second0 seconds1.6 KB0 b
https://meta.wikimed...a.org/w/index.php → run-1 second0 seconds56.5 KB0 b
https://en.wikipedia...ia.org/w/load.php → run-1 second4 weeks58.0 KB0 b
https://meta.wikimed...a.org/w/index.php → run-1 second0 seconds2.8 KB0 b

Largest CSS files

2 files

CSS blocks rendering until it is downloaded and parsed, so the biggest files delay first paint the most.

urltime since last modifiedcache timetransfersize
https://en.wikipedia...ia.org/w/load.php → run-1 second5 minutes25.9 KB0 b
https://en.wikipedia...ia.org/w/load.php → run-1 second5 minutes3.5 KB0 b

Largest image files

7 files

Images are usually the easiest bytes to win back: resize them, compress harder or switch to a modern format like AVIF or WebP.

urltime since last modifiedcache timetransfersize
https://upload.wikim...Icon_pdf_file.png → run5 years0 seconds2.2 KB0 b
https://thumb.wikime...n-shackle.svg.png → run2 years0 seconds2.5 KB0 b
https://thumb.wikime...symbol%29.svg.png → run4 weeks0 seconds7.6 KB0 b
https://thumb.wikime...symbol%29.svg.png → run4 weeks0 seconds4.8 KB0 b
https://en.wikipedia...uch/wikipedia.png → run11 weeks1 year2.2 KB0 b
https://upload.wikim...seWindow19x19.png → run2 years0 seconds2.8 KB0 b
https://upload.wikim...anner-Bg-2017.jpg → run3 weeks0 seconds35.1 KB0 b

Largest HTML files

1 file

The HTML document is the first byte of everything: nothing starts rendering before it arrives.

urltime since last modifiedcache timetransfersize
https://en.wikipedia.org/wiki/ChatGPT → run55 seconds0 seconds191.8 KB0 b

Largest favicon files

1 file

The largest favicon files across the tested pages.

urltime since last modifiedcache timetransfersize
https://en.wikipedia...con/wikipedia.ico → run11 weeks1 year2.0 KB0 b

Largest other files

1 file

The largest other files across the tested pages.

urltime since last modifiedcache timetransfersize
https://en.wikipedia...alAutoLogin/start → run-1 second0 seconds1.1 KB0 b

Largest text files

2 files

The largest text files across the tested pages.

urltime since last modifiedcache timetransfersize
https://en.wikipedia...ns-502b/v2/events → run-1 second0 seconds997 B0 b
https://en.wikipedia...beacon/impression → run-1 second0 seconds707 B0 b

Largest SVG files

10 files

The largest SVG files across the tested pages.

urltime since last modifiedcache timetransfersize
https://en.wikipedia...ons/enwiki-25.svg → run11 weeks1 year44.2 KB0 b
https://en.wikipedia...ordmark-en-25.svg → run11 weeks1 year5.1 KB0 b
https://en.wikipedia...tagline-en-25.svg → run11 weeks1 year5.9 KB0 b
https://en.wikipedia...ia.org/w/load.php → run-1 second4 weeks1.3 KB0 b
https://en.wikipedia...ia.org/w/load.php → run-1 second4 weeks1.5 KB0 b
https://en.wikipedia...n-progressive.svg → run2 days1 year1.2 KB0 b
https://en.wikipedia...ia.org/w/load.php → run-1 second4 weeks1.3 KB0 b
https://en.wikipedia...r-progressive.svg → run2 days1 year1.2 KB0 b
https://en.wikipedia...nify-clip-ltr.svg → run2 days1 year1.2 KB0 b
https://en.wikipedia...ges/sort_both.svg → run2 days1 year1.2 KB0 b

Slowest responses

10 files

These assets took the longest time to download. Everything that waits for them (rendering, other requests on the same connection) is held up too.

urltypetime since last modifiedcache timetransfersizetiming
https://en.wikipedia.org/wiki/ChatGPT → runhtml55 seconds0 seconds191.8 KB0 b790 ms
https://en.wikipedia...tagline-en-25.svg → runsvg11 weeks1 year5.9 KB0 b379 ms
https://en.wikipedia...ordmark-en-25.svg → runsvg11 weeks1 year5.1 KB0 b370 ms
https://en.wikipedia...ons/enwiki-25.svg → runsvg11 weeks1 year44.2 KB0 b367 ms
https://en.wikipedia...ia.org/w/load.php → runjavascript-1 second5 minutes22.7 KB0 b292 ms
https://en.wikipedia...ia.org/w/load.php → runcss-1 second5 minutes3.5 KB0 b280 ms
https://en.wikipedia...ia.org/w/load.php → runcss-1 second5 minutes25.9 KB0 b255 ms
https://en.wikipedia...n-progressive.svg → runsvg2 days1 year1.2 KB0 b139 ms
https://en.wikipedia...ia.org/w/load.php → runsvg-1 second4 weeks1.5 KB0 b138 ms
https://en.wikipedia...ia.org/w/load.php → runsvg-1 second4 weeks1.3 KB0 b137 ms

Short or no cache time

10 files

Assets with a short cache time are re-downloaded by returning visitors. A longer cache lifetime makes repeat visits faster for free.

urltypetime since last modifiedcache timetransfersize
https://meta.wikimed...a.org/w/index.php → runjavascript-1 second0 seconds56.5 KB0 b
https://upload.wikim...anner-Bg-2017.jpg → runimage3 weeks0 seconds35.1 KB0 b
https://en.wikipedia...ia.org/w/load.php → runcss-1 second5 minutes25.9 KB0 b
https://en.wikipedia...ia.org/w/load.php → runjavascript-1 second5 minutes22.7 KB0 b
https://thumb.wikime...symbol%29.svg.png → runimage4 weeks0 seconds7.6 KB0 b
https://thumb.wikime...symbol%29.svg.png → runimage4 weeks0 seconds4.8 KB0 b
https://en.wikipedia...ia.org/w/load.php → runcss-1 second5 minutes3.5 KB0 b
https://upload.wikim...seWindow19x19.png → runimage2 years0 seconds2.8 KB0 b
https://meta.wikimed...a.org/w/index.php → runjavascript-1 second0 seconds2.8 KB0 b
https://thumb.wikime...n-shackle.svg.png → runimage2 years0 seconds2.5 KB0 b