About FPS Checker | Methodology and Editorial Policy
Learn who maintains FPS Checker, how the browser tests work, and what the results can and cannot tell you.
What FPS Checker Does
FPS Checker provides browser-based tools for measuring animation frame timing, estimating display refresh rate and comparing motion. The tools are free to use and do not require an account or software download.
How Measurements Work
The FPS test counts requestAnimationFrame callbacks while the page is visible. The frame-time test records the interval between frames, and the refresh-rate test estimates the active display cadence from those intervals. Results describe the current browser session, hardware load and display settings, not a game's internal renderer.
Important Limitations
Background tabs, battery-saving modes, browser extensions, thermal throttling, driver settings and other workloads can change the result. A browser test cannot replace an in-game overlay or a calibrated measurement device. Repeat a test under comparable conditions before comparing results.
Editorial Policy
Guides are written and maintained by the FPS Checker Editorial Desk. We identify the measurement method, separate observed browser behavior from general advice, document limitations, and link to supporting standards or manufacturer documentation where practical. We do not claim that a browser test replaces a game benchmark or calibrated display hardware. Questions and corrections can be sent to contact@fpschecker.org.