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

Tested 2026-09-20 12:34:22 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

8 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 weeks204.1 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 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 minutes27.5 KB0 b
https://en.wikipedia...ia.org/w/load.php → run-1 second5 minutes3.5 KB0 b

Largest image files

8 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 → run4 weeks0 seconds2.5 KB0 b
https://thumb.wikime...enclipart.svg.png → run6 weeks0 seconds2.6 KB0 b
https://thumb.wikime..._Barack_Obama.jpg → run4 weeks0 seconds23.4 KB0 b
https://thumb.wikime...signature.svg.png → run8 weeks0 seconds4.6 KB0 b
https://en.wikipedia...uch/wikipedia.png → run10 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...wiki/Barack_Obama → run3 minutes0 seconds413.1 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 → run10 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

1 file

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

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 → run10 weeks1 year44.2 KB0 b
https://en.wikipedia...ordmark-en-25.svg → run10 weeks1 year5.1 KB0 b
https://en.wikipedia...tagline-en-25.svg → run10 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 → run5 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 → run5 days1 year1.2 KB0 b
https://en.wikipedia...nify-clip-ltr.svg → run5 days1 year1.2 KB0 b
https://upload.wikim...ock-red-alt-2.svg → run8 years0 seconds2.9 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...wiki/Barack_Obama → runhtml3 minutes0 seconds413.1 KB0 b1.233 s
https://en.wikipedia...ons/enwiki-25.svg → runsvg10 weeks1 year44.2 KB0 b564 ms
https://en.wikipedia...ia.org/w/load.php → runjavascript-1 second5 minutes22.7 KB0 b543 ms
https://en.wikipedia...ia.org/w/load.php → runcss-1 second5 minutes27.5 KB0 b535 ms
https://en.wikipedia...tagline-en-25.svg → runsvg10 weeks1 year5.9 KB0 b502 ms
https://en.wikipedia...ordmark-en-25.svg → runsvg10 weeks1 year5.1 KB0 b483 ms
https://en.wikipedia...ia.org/w/load.php → runcss-1 second5 minutes3.5 KB0 b465 ms
https://en.wikipedia...ia.org/w/load.php → runsvg-1 second4 weeks1.3 KB0 b126 ms
https://en.wikipedia...ia.org/w/load.php → runsvg-1 second4 weeks1.5 KB0 b118 ms
https://en.wikipedia...n-progressive.svg → runsvg5 days1 year1.2 KB0 b118 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://upload.wikim...anner-Bg-2017.jpg → runimage3 weeks0 seconds35.1 KB0 b
https://en.wikipedia...ia.org/w/load.php → runcss-1 second5 minutes27.5 KB0 b
https://thumb.wikime..._Barack_Obama.jpg → runimage4 weeks0 seconds23.4 KB0 b
https://en.wikipedia...ia.org/w/load.php → runjavascript-1 second5 minutes22.7 KB0 b
https://thumb.wikime...signature.svg.png → runimage8 weeks0 seconds4.6 KB0 b
https://en.wikipedia...ia.org/w/load.php → runcss-1 second5 minutes3.5 KB0 b
https://upload.wikim...ock-red-alt-2.svg → runsvg8 years0 seconds2.9 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...enclipart.svg.png → runimage6 weeks0 seconds2.6 KB0 b