Screen Test
Click Start Test to open a full-screen overlay. Switch with a click, the ← → keys (variants) and ↑ ↓ keys (tests), or the on-screen controls. Press Esc to exit.
Start
Starts with solid colors. For the best results, clean your screen first and dim the room lights.
Choose a test
Display info
- Screen size
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- Physical (est.)
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- Pixel ratio
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- Color depth
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- Viewport
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- Orientation
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Refresh rate (estimate)
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Measured with requestAnimationFrame timing, so it's approximate. Browsers may cap it (e.g. battery saver) or sync it to the display of the window you're using.