How to use the browser input latency test
Interact with the test surface using clicks, taps or key presses. The page compares each event timestamp with the high-resolution clock when the handler begins.
No. It estimates delay visible at the browser event boundary and does not include every hardware and display stage.
Event timestamps are usually assigned close to dispatch, and clock precision or platform timestamp behavior can compress very small differences.
Yes. It is free to use, requires no account and runs directly in a modern web browser.
No. The interactive measurement and generated results stay in this browser session unless you explicitly download a file.