Find the right browser tool without a crowded toolbar.
Use the direct routes below for a focused workspace. Each route exposes its own browser compatibility, permission, and local-data boundary before a device or media action begins.
What it does
Useful, focused capabilities
Local screen recording with browser-controlled source selection
Typing, CPS, and reaction-time tests based on live browser input
Camera and microphone diagnostics after explicit permission
Results that disclose browser, device, timing, and hardware limits
Browser compatibility
Requirements and honest fallbacks
A modern JavaScript-enabled browser; media-capture routes require HTTPS or localhost and explicit permission.
JavaScript-enabled modern browser
Physical keyboard or pointer
camera
microphone
screen sharing
local storage
Questions people ask
Clear answers and limits
Are Performance & Device Lab results clinical or hardware certifications?
No. The tools report what the browser observes and explicitly avoid medical, anti-cheat, hardware-latency, or identity-verification claims.
Which Performance & Device Lab tools need permission?
Screen Recorder uses the browser-controlled display picker and can optionally request microphone or camera access. Camera & Microphone Test requests only the devices you enable.
Why can results vary between sessions or devices?
Display refresh, input hardware, browser scheduling, operating-system behavior, and permissions can all affect interactive measurements and media capture.
