About ScreenTest.run
Professional display diagnostics, simplified for everyone.
Who We Are
Welcome to ScreenTest.run, your comprehensive resource for analyzing and understanding your display's performance. We are a team of tech enthusiasts and designers dedicated to building the best free online tools for hardware diagnostics.
Our core mission is to provide accurate, real-time measurements and insightful tools that empower users—whether gamers, creative professionals, or everyday users—to ensure their screens are performing at their peak, all without installing suspicious software.
Our Tools
We currently offer a suite of specialized tests designed to identify common monitor defects:
Dead Pixel Test
Identify stuck or dead pixels on your screen using solid color patterns (White, Red, Green, Blue). Essential for checking new monitors.
Refresh Rate (Hz) Test
Verify your monitor's actual refresh rate. Check if your 144Hz or 240Hz gaming monitor is configured correctly by the operating system.
Frame Rate (FPS) Test
Measure your device's browser rendering performance by displaying real-time Frames Per Second (FPS). Helps understand system smoothness.
Backlight Bleed Test
A specialized dark-room test to check for light leakage, clouding, and IPS glow on LCD and LED displays.
Pure Color Screens
Full-screen color displays (White, Black, RGB) useful for cleaning, focus, or testing color uniformity.
Why Choose Us?
- Clean & Focused Interface Our diagnostic tools provide a clean, focused interface that allows users to concentrate on the testing features without unnecessary distractions.
- No Downloads Required All tests run directly in your browser. It's safe, secure, and works instantly on PC, Mac, iPhone, and Android.
- Privacy First We do not collect personal hardware data. All tests are performed locally on your device.
We are constantly working to improve our existing tools and develop new ones to provide even more value to our users. If you have any suggestions or feedback, feel free to contact us.