PT

Blue screen

A pure blue fullscreen activates only blue subpixels — ideal for channel tests and cool-toned ambient lighting.

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Predefinição de resolução

Como usar

  1. Open the blue screen page.
  2. Enter fullscreen via the button or preview.
  3. Scan for dead pixels or uneven blue intensity.

Porquê usar um ecrã Blue?

Blue channel test

Reveal subpixel defects and uniformity issues specific to the blue channel.

Cool ambient light

Blue light can reduce harsh shadows in low-light creative setups.

Calibration reference

Use alongside white and grey screens to evaluate color temperature drift.

Blue screen diagnostics

Blue subpixels often show age-related issues first on some LCD panels — a full blue field makes weak zones visible.

Combine with red and green tests to map which channel causes tint shifts on your display.

FAQ

What defects show on a blue screen?

Dead pixels appear dark; stuck pixels may show wrong colors as bright dots against blue.

Is blue light harmful?

Reduce brightness for long sessions. This tool does not increase emission beyond your panel settings.

Can I download 4K blue wallpaper?

Yes — select 4K (3840×2160) and download PNG.

Does it work on tablets?

Yes, in browsers that support fullscreen and canvas download.