A free, web-based utility suite designed to test your computer hardware and peripherals instantly without installing any software.
Cost / License
- Free
- Proprietary
Platforms
- Online
United States




Screentest is described as 'Program for testing the quality of CRT/LCD screens. It displays various patterns and allows you to estimate the quality of your CRT/LCD monitor' and is an app in the system & hardware category. There are more than 10 alternatives to Screentest for a variety of platforms, including Windows, Web-based, Android, Mac and Linux apps. The best Screentest alternative is HardwareTest, which is free. Other great apps like Screentest are InjuredPixels, Koler Dead Pixel Test, lcdtest and Nokia Monitor Test.
A free, web-based utility suite designed to test your computer hardware and peripherals instantly without installing any software.




Easily check your PC, laptop, tablet, smartphone, connected screen or TV for dead pixels, scratches or defects. Test in the store, before buying, or during the warranty period, and get a replacement. Tiny, free and open source, no ads or permissions.




Native macOS app with 20+ full-screen display tests covering solid colors, gradients, ghosting, burn-in, color accuracy, HDR, response time, display info, and PWM flicker. Supports multi-monitor setups with fast navigation, auto cycle, and zero permissions.




Nokia Monitor Test is a freeware utility to help test and adjust a monitor for an optimum display.

CapyToolkit is a collection of 45+ free browser tools engineered to run entirely client-side. All operations execute locally via native browser APIs, Web Workers, and WASM, ensuring that data, logs, and cryptographic keys never reach an external server.




A lightweight Android app that helps repair stuck or “dead” pixels on your screen. Using rapid color cycling and flashing patterns, it stimulates inactive pixels to restore normal display function.



Auditor of dead pixel is a small and very easy to use application that will help you find dead pixels on your TFT / LCD monitor.

The EIZO monitor test lets you quickly and easily assess your monitor’s image quality. You can carry out 13 individual tests to check how uniform the image display is across the entire monitor, for example, or if the text is displayed sharply.
Dead Pixel Buddy is a small, standalone, web tool designed to helps you detect dead pixels on LCD screens.


ScreenReact displays patterns to test the picture of your LCD. E.g. contrast, sharpness...

Dead Pixel Tester program detects dead pixels on computer screens by filling the screen with a color and searching for pixels not displaying that color, indicating a defect.
