About CPS Testers
A free, ad-supported toolkit for measuring click speed, reaction time, typing, and hardware performance — built to be fast, accurate, and honest about what it does with your data.
Why this site exists
CPS Testers started as a single click-speed test and grew into a full suite of browser-based diagnostic and speed tools because the same underlying problem kept coming up: most "test your X" sites online are cluttered with autoplay video ads, demand an account before showing a result, or quietly round their numbers in ways that make comparing scores across sessions meaningless. We built this site to fix that — one accurate, distraction-light tool per page, with a result you can trust and compare the next time you come back.
How the tools stay accurate
Every timed test on this site — click speed, reaction time, typing speed, key rollover, mouse polling rate — reads from the browser's high-resolution performance timer rather than a standard setTimeout-based clock, which is precise only down to whichever frame happens to render next. That distinction matters most on short, fast tests, where a lower-precision timer can silently skew a result by a meaningful margin. We'd rather a test take an extra moment to load correctly than return a number that looks precise but isn't.
What "no signup required" actually means
There is no account system anywhere on this site. Personal bests, recent test history, and calculator inputs are stored in your browser's local storage, which means they stay on your device and reset if you clear your browser data or switch devices — we simply never see them. The one exception is the optional global leaderboard on select tests: if you type a nickname and submit a score there, that nickname and score are stored so other visitors can see it. Full detail on exactly what is and isn't collected lives on the Privacy Policy page.
What we build around
Accuracy first
High-resolution timing on every clock-based test, and clearly labeled results so you know exactly what you're looking at.
Privacy by default
Your history and personal bests live in your browser, not on our servers. Nothing is collected unless you deliberately submit it.
Fast and lightweight
No account walls, no forced downloads, and no bloated pages — every tool loads and runs immediately in any modern browser.
Built for real use
Gamers checking hardware before a match, typists tracking progress, and anyone curious how their reflexes stack up — the tools are built around actual use cases, not novelty.
Frequently Asked Questions
Do I need to create an account to use any of the tools?
No. Every tool on this site runs entirely in your browser and works immediately — no sign-up, no login, and no email address required for any test, calculator, or generator.
How are the click, reaction, and timing tests actually measured?
Each timed test uses the browser's high-resolution performance clock rather than a regular JavaScript timer, which keeps results accurate to the millisecond regardless of what else is happening on the page.
Is my data sent to a server when I use a test?
Only if you choose to submit a score to a public leaderboard, in which case a nickname and a score are sent. Everything else — session history, personal bests, and calculator inputs — stays in your browser's local storage and is never transmitted anywhere.
Why does the site run ads?
Ads are what let every tool stay completely free with no paywalled features, no premium tier, and no usage limits. We keep ad placement out of the way of the actual testing area so it never interferes with a live test.
Can I suggest a new tool or report something that isn't working?
Yes — the Contact page has a short form for exactly that. Tool suggestions and bug reports are the two most common things we hear about, and both go directly to the person maintaining the site.