Screen Tester

## Screen Tester

Screen Tester is a free online tool for testing and checking computer, laptop, TV, and mobile displays directly in your browser.

### What You Can Test

- Dead pixels and stuck pixels

- Screen colors and color range

- Brightness and luminance

- Contrast

- Gamma

- Refresh rate

- Display patterns

- Other common screen and display issues

### Simple Browser-Based Testing

No software installation is required. Open Screen Tester, select a test, and follow the on-screen instructions. The tests are designed to make it easy to inspect your display and identify potential problems.

### Who Is It For?

Screen Tester can be useful when buying a new monitor, checking a second-hand display, troubleshooting a laptop screen, inspecting a TV, or simply checking the quality of an existing display.

Everything runs directly in your web browser, making Screen Tester quick and accessible from modern devices.