Everything below is read directly from your browser — no servers, no API calls. Tabs marked with a test button do a small bit of network or compute work, but only when you press it.
Developer DumpAll sections expanded for troubleshooting. Permission-required tests (clipboard, geolocation, ISP lookup) still need a click — they don't auto-fire unless you press "Request All Permissions" below.Back to Tabs
Connection
What the browser thinks of your network · refresh anytime
Device
Hardware-shaped traits the browser will admit to
Screen & Graphics
Your screen, color range, and graphics card
Browser
Identity and capability matrix
Language & Region
What language you speak, where you are, what time you're on
Accessibility
Settings your operating system shares with websites — dark mode, reduced motion, contrast, etc.
Storage
What you've stowed locally and how much room is left
Speed (Live)
Frame rate, memory, and download counts · updates every second
Things You Can Try
Each test only runs when you press its button. Nothing fires automatically.
Trackers
What advertising and analytics companies combine to identify you across sites — without cookies