Every screen.
Every test. One tab.
Full-screen color displays for pixel tests and lighting, plus a full diagnostics kit for your camera, mic, keyboard, sensors and hardware โ all running live in your browser.
Eleven full-screen colors, one click away
Each screen loads instantly at any resolution โ for dead-pixel checks, chroma-key backdrops, or just a wash of color when you need it.
Test any part of your device, by category
Camera, mic, speakers, keyboard, sensors and hardware specs โ grouped so you can find the right check in seconds.
Mobile Sensors
CH01Check the sensors built into your phone โ no app required.
Camera & Video
CH02Confirm your camera before a meeting or recording.
Audio & Sound
CH03Track down crackly speakers or a mic that isn't picking up.
Mouse & Keyboard
CH04See exactly how your input devices respond, click by click.
PC Specs & Hardware
CH05View your CPU, GPU, RAM, and display without installing anything.
Browser Tools
CH06See what your browser is running and what it can access.
Connectivity
CH07Make sure your ports and wireless links actually work.
Extras
CH08A few more handy browser-based utilities.
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Guides for getting the most out of your screen
10 Ways to Use a White Screen You Didn't Know About
From Zoom fill lighting and dead-pixel checks to product photos and sleep lighting.
Monitor Cleaning Guide โ How to Clean a Screen Safely
Safe cloths, liquids, and pressure โ plus how to inspect the result on a white screen.
How to Check Your PC Specs โ Windows, Mac & Linux
Find CPU, GPU, RAM, and display details on every major desktop OS.
Common questions
Yes โ every screen and every tool is free, with no account and no download required.
No. Everything runs directly in your browser using HTML, CSS, and JavaScript โ no plugins or apps.
No. Camera, microphone, and sensor tools process everything locally in your browser, and your browser always asks permission first.
No. Modern displays are built to run at full brightness for extended periods without harm.