www.coolmathgames.com speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 14:58 UTC. Grade A (97/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 55 ms 23%
- TCP connect 32 ms 14%
- Server wait 149 ms 63%
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 first byte arrived in 236 ms. That is workable, and the cheapest win left is caching or a warmer connection.
- The page transfers 101.7 KB over 26 request(s).
- The HTML itself arrives gzip-compressed.
- It runs over HTTP/3, so the assets share a connection instead of opening one each.
- The largest element painted at 632 ms, inside the 2.5 s Google calls good.
- Layout stayed still (CLS 0.004), so nothing jumps under the reader's cursor.
- The main thread was blocked for 957 ms, so taps and scrolling wait while scripts run.
Fix first: Avoid extra redirects - Link to the canonical URL (and make sure http, the apex domain and www all point at it) so no visitor pays a redirect first.
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.
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. 26 request(s) in total, 101.7 KB across all of them.
Top issues
Avoid extra redirects
medium impact1 redirect hop(s) before the page load started, each one a full round trip before the first byte.
Fix: Link to the canonical URL (and make sure http, the apex domain and www all point at it) so no visitor pays a redirect first.
Strict-Transport-Security
low impactHSTS is not set, so the first visit on a hostile network can still be downgraded to HTTP.
Fix: Send Strict-Transport-Security with a max-age of at least six months. Add includeSubDomains once every subdomain is HTTPS.
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.coolmathgames.com/sites/default/files/2024-09/Timing.svg | images | 200 | 1.24 s | 612 B |
| https://www.coolmathgames.com/sites/default/files/2022-11/Critical-thinking.svg | images | 200 | 1.23 s | 688 B |
| https://www.coolmathgames.com/sites/default/files/2024-09/Add-subtract.svg | images | 200 | 1.23 s | 417 B |
| https://www.coolmathgames.com/sites/default/files/2024-09/One-button.svg | images | 200 | 1.23 s | 476 B |
| https://www.coolmathgames.com/sites/default/files/2022-05/Endless-puzzles.svg | images | 200 | 1.23 s | 503 B |
| https://www.coolmathgames.com/sites/default/files/2024-09/Stacking.svg | images | 200 | 1.22 s | 368 B |
| https://www.coolmathgames.com/sites/default/files/2024-09/Adventure.svg | images | 200 | 1.22 s | 832 B |
| https://www.coolmathgames.com/sites/default/files/2024-09/Construction.svg | images | 200 | 1.22 s | 632 B |
| https://www.coolmathgames.com/sites/default/files/2024-09/Rotation.svg | images | 200 | 1.22 s | 1.0 KB |
| https://www.coolmathgames.com/sites/default/files/2024-09/Tower-defense.svg | images | 200 | 1.21 s | 490 B |
| https://www.coolmathgames.com/sites/default/files/2024-09/Hard-control.svg | images | 200 | 1.21 s | 695 B |
| https://www.coolmathgames.com/sites/default/files/2024-09/Time-management.svg | images | 200 | 1.21 s | 938 B |
| https://www.coolmathgames.com/logo.webp | images | 200 | 1.20 s | 7.7 KB |
| https://www.coolmathgames.com/sites/default/files/2024-09/Idle.svg | images | 200 | 1.20 s | 1.1 KB |
| https://www.coolmathgames.com/sites/default/files/2024-09/Endless-runner.svg | images | 200 | 1.20 s | 1020 B |
| https://www.coolmathgames.com/sites/default/files/2024-09/Platformer.svg | images | 200 | 1.20 s | 979 B |
| https://www.coolmathgames.com/sites/default/files/2024-09/Match3.svg | images | 200 | 1.20 s | 810 B |
| https://www.coolmathgames.com/sites/default/files/2024-09/Business.svg | images | 200 | 1.20 s | 561 B |
| https://www.coolmathgames.com/sites/default/files/2024-09/Aiming.svg | images | 200 | 1.20 s | 501 B |
| https://www.coolmathgames.com/sites/default/files/2024-09/Other-math.svg | images | 200 | 1.20 s | 646 B |
| https://www.coolmathgames.com/sites/default/files/2024-09/Multiply-divide.svg | images | 200 | 1.20 s | 540 B |
| https://www.coolmathgames.com/sites/default/files/2024-09/Building-blocks.svg | images | 200 | 1.20 s | 512 B |
| https://www.coolmathgames.com/sites/default/files/2026-06/Savings.svg | images | 200 | 1.20 s | 1.8 KB |
| https://www.coolmathgames.com/sites/default/files/2024-09/Applied-math.svg | images | 200 | 1.20 s | 598 B |
| https://www.coolmathgames.com/sites/default/files/2024-09/Block-removal.svg | images | 200 | 1.20 s | 342 B |
Report this page
Run this test on your own site
The same engine, free, with the screenshots and the fixes. No account needed.