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About Monitor / Dead Pixel Test
Monitor / Dead Pixel Test — free, private, browser-based test tool
Full-screen solid colors and gradients to find dead or stuck pixels, backlight bleed, and color banding. It runs in your browser, so the file is processed on your own device.
Why use Monitor / Dead Pixel Test
- ·Files stay on your device — nothing is uploaded
- ·No signup needed
- ·Works in any modern browser, on any OS
- ·Free daily use; Pro removes limits and watermarks
How to use it
- 1Type or paste your input.
- 2Pick the options you want.
- 3Copy or save the result.
What Monitor / Dead Pixel Test does
Full-screen solid colors and gradients to find dead or stuck pixels, backlight bleed, and color banding.
How it works
performance.now() for timing, Gamepad / Pointer / Keyboard / WebHID APIs for device tests, WebGL/WebGPU probes for hardware capability detection. The processing code runs inside the page, so your file is not uploaded to a server — you can confirm this in your browser's DevTools → Network tab.
Frequently asked questions
Does Monitor / Dead Pixel Test upload my files?+
No. Monitor / Dead Pixel Test runs in your browser and processes the file on your device. Nothing is sent to our servers.
Is Monitor / Dead Pixel Test free?+
Yes, with a daily free allowance and no signup. Xonvert Pro ($4.99/month) removes the daily limits and the watermark on exported files.
Do I need to install anything?+
No. It works in any modern browser on Windows, macOS, Linux, ChromeOS, Android and iPad.
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