屏幕测试
检查您的显示分辨率、像素比、方向和颜色深度，然后运行全屏坏点和渐变模式。
测试接口
按“开始”后，您的浏览器可能会请求许可。测试模式
使用测试图案查找坏点、条带、背光不均匀和颜色问题。按 Esc 键退出全屏模式。
如何使用这个工具
- Read the reported screen and viewport values.
- Use the test patterns to inspect for stuck or dead pixels.
- Press Escape to leave a full-screen pattern.
- Optional: start a screen recording, capture a short clip, and stop it to release the capture.
广告
技术说明
The page reads window.screen properties and visualViewport dimensions. CSS pixels differ from physical pixels, so devicePixelRatio is shown separately. Browser privacy protections may reduce precision or hide values.
Dead-pixel patterns are solid colours that make defective subpixels easier to see. A screen recording captures the browser compositor output, not the physical panel.
故障排除
Resolution looks lower than expected
Browser zoom, display scaling, and privacy protections affect reported CSS values. Physical resolution may not be exposed.
Full-screen does not open
The Fullscreen API requires a user gesture and may be blocked by embedded browsers.
Screen recording is unavailable
Some browsers or managed devices disable getDisplayMedia.
Colours look inaccurate
Colour profiles and HDR modes affect rendering. This tool cannot calibrate a display.
相关工具
常见问题
广告