kahoot.it speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 13:31 UTC. Grade A (93/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 62 ms 50%
- TCP connect 3 ms 2%
- Server wait 61 ms 49%
Measured on the connection that fetched the HTML. Every other request on the page waits for the end of this bar before it can start.
How this page compares
Every report published here is in this comparison, so it is a reference population of pages tested from one server - not a benchmark of the whole web.
What these numbers mean
- The server answered in 125 ms, which is fast: almost all of the wait is the page itself, not the host.
- The page transfers 629.3 KB over 8 request(s), which is lean. Css files are 99% of it, so split the stylesheet so the first screen does not download the whole site.
- The HTML itself arrives gzip-compressed.
- It runs over HTTP/3, so the assets share a connection instead of opening one each.
- 100% of the weight comes from other hosts (analytics, fonts, embeds), which also means their slow day becomes your slow day.
- The largest element painted at 1.37 s, inside the 2.5 s Google calls good.
- Layout stayed still (CLS 0.053), so nothing jumps under the reader's cursor.
- The main thread was blocked for 753 ms, so taps and scrolling wait while scripts run.
Fix first: Compress text responses - Turn on brotli (preferred) or gzip for text/css, javascript and text/html in the web server. This is the cheapest win available on almost any site.
Read on one shared server, not a visitor's phone: use it to compare pages against each other, not as a promise about every connection. We fix what these tests find.
Screenshot
What the page looks like
Loaded in headless Chromium on this server. Click an image to open it full size.
Browser render
The same URL loaded in a real browser, so these are the readings curl cannot produce. The grade above is still built from the server measurements.
Page weight by type
What the page is made of
Transfer size, compressed as sent. 8 request(s) in total, 629.3 KB across all of them.
Top issues
Compress text responses
high impact1 text response(s) of 10 KB or more are sent uncompressed, and the document itself is not compressed. That is 599.6 KB of compressible text.
Fix: Turn on brotli (preferred) or gzip for text/css, javascript and text/html in the web server. This is the cheapest win available on almost any site.
Render-blocking resources
high impact5 render-blocking resource(s) in the document head (1 script(s), 4 stylesheet(s)). The page cannot paint until each one arrives.
Fix: Add defer or async to scripts that do not change the first paint, inline the critical CSS, and load the rest with media="print" plus an onload swap.
Cache static assets
medium impact2 asset(s) answer without a Cache-Control max-age, so browsers revalidate them on every visit.
Fix: Version filenames on change and serve them with a long max-age plus immutable. That is what makes a returning visitor fast.
Third-party weight
medium impact3 third-party host(s) serve 626.9 KB of this page. Each one is another DNS lookup, TLS handshake and point of failure you do not control.
Fix: Self-host the libraries you can, drop the tags you cannot justify, and preconnect the ones you keep.
Waterfall
Slowest requests
Each bar is one request's own response time, scaled to the slowest. Assets were fetched in parallel, so the bars overlap in real time rather than stacking. first party third party
| Request | Type | Status | Time | Size |
|---|---|---|---|---|
| https://www.googletagmanager.com/ns.html?id=GTM-5HCKFC 3rd party | html | 200 | 487 ms | 92 B |
| https://assets-cdn.kahoot.it/controller/v2/assets/index-D_qLT_Em.js 3rd party | javascript | 200 | 418 ms | 54 B |
| https://files-cdn.kahoot.it/shared-assets/fonts/fonts.css?v=1802 3rd party | css | 200 | 357 ms | 599.6 KB |
| https://assets-cdn.kahoot.it/controller/v2/assets/app-D2cFFabk.css 3rd party | css | 200 | 357 ms | 10.8 KB |
| https://assets-cdn.kahoot.it/controller/v2/assets/controller-2BdZ9gS6.css 3rd party | css | 200 | 357 ms | 10.7 KB |
| https://assets-cdn.kahoot.it/controller/v2/assets/app-BmKt5P9g.css 3rd party | css | 200 | 357 ms | 4.6 KB |
| https://assets-cdn.kahoot.it/controller/v2/favicon.ico 3rd party | images | 200 | 290 ms | 1005 B |
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