Monitor Test Suite
Test Monitor Test Suite using browser APIs. Processing stays on your device.
Last updated: 2026-10-26
Free Online Monitor Test Suite
Use this free online monitor test suite tool directly in your browser without installing software. Fast, mobile friendly and easy to use.
Monitor Test Suite
Runs in your browser. Device tests request permission only when you start them.
Use solid colors and a grayscale pattern to inspect your display for stuck or dead pixels. The page cannot diagnose a panel automatically.
Press Esc to leave fullscreen. Use caution with bright patterns in a dark room.
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About This Tool
About Monitor Test Suite
Test Monitor Test Suite using browser APIs. Processing stays on your device. No files or device data are uploaded. Camera and microphone tests ask permission only when started.
How to use it
- Open the test and follow its on-screen instructions.
- Grant device permission only if that test needs it.
- Stop the test when finished.
Frequently Asked Questions
Does this run in my browser?
Yes. The test uses browser APIs and does not need a server-side processing service.
Are camera or microphone data uploaded?
No. This page previews or measures them locally and does not record or upload them.
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