Prueba de pantalla
Inspeccione la resolución de su pantalla, la proporción de píxeles, la orientación y la profundidad del color, luego ejecute patrones de gradiente y píxeles muertos en pantalla completa.
Interfaz de prueba
Es posible que su navegador le solicite permiso después de presionar Inicio.Patrones de prueba
Utilice los patrones de prueba para buscar píxeles muertos, bandas, retroiluminación desigual y problemas de color. Presione Escape para salir del modo de pantalla completa.
Cómo utilizar esta herramienta
- 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.
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Explicación técnica
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.
Solución de problemas
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.
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