Screen colour and pixel test
Display solid colours and simple patterns to help inspect a screen for visible pixel defects.
Bookmark this page
Keep this page handy for next time.
- On a computer
- Press Ctrl + D, or Command + D on a Mac.
- On a phone or tablet
- Open your browser's menu or Share menu and look for Add Bookmark, Bookmark or Add to favourites.
A bookmark saves the page link. Save any tool results separately.
Inspect for visible defects. Use Escape to leave full screen.
How to use this tool
- Choose a solid colour or grid, then open the full-screen view.
- Inspect the screen and use Escape or Exit full screen to return.
Things to know
- Display patterns only; no automatic diagnosis or stuck-pixel repair. Browser colour management and device settings affect the result.
- Processing and results stay on this device. Inputs are bounded; no work is saved between visits.
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