About FrameRate Check
FrameRate Check is a suite of display tests that run entirely in your browser: frame rate, refresh rate, ghosting, frame skipping, stutter, dead pixels, input lag and mouse polling, plus an FPS calculator built from published benchmark data.
Why this site exists
The display you are looking at right now is probably capable of more than it is currently showing you. High-refresh monitors sit at 60Hz for years because an operating system defaulted there. Panels get blamed for ghosting that an overdrive setting would fix. Gamers buy graphics cards to cure stutter caused by a background app. In case after case, the missing ingredient was not money — it was a measurement: a number you can trust, taken in five seconds, that tells you which part of the chain is actually at fault. That is the whole ambition of this site. Every tool here measures one thing, states how it measures it, and states plainly what it cannot measure.
How the tests work
Browsers expose the timestamps of every frame they draw, and those timestamps are a faithful record of what your display pipeline is doing. The tests here are built on that single honest foundation — requestAnimationFrame timing, pointer events, canvas and WebGL — with no downloads, no extensions and no accounts. The FPS calculator is the one exception to the live-measurement rule, and it is labelled accordingly: its figures are estimates modelled from published benchmark reviews, with the methodology written out on the page.
What we will not do
No fake precision: where a browser cannot see something — what a panel physically did with a frame, a GPU's internal temperature — the page says so and offers the method that can. No invented statistics: the only numbers quoted in our guides are the arithmetic of frame times and the benchmark anchors the calculator discloses. And no dark patterns: results are never gated, emailed or uploaded. If a test here ever helps you avoid one wrong purchase or fix one silent setting, it has done its job.