Dead Pixel Tester
Solid color screen

Green Screen

Use a green screen online for chroma-key reference, green sub-pixel checks and display lighting. Download a pure green AVIF background for video or testing.

Green Screen AVIF background

Green Screen for testing and lighting

A full green field isolates the green channel and provides a consistent chroma-key reference. It also exposes uneven green sub-pixels, color cast and panel uniformity issues that can disappear in normal images.

  • Check green sub-pixels for dark, stuck or incorrectly tinted pixels.
  • Use a consistent green reference while reviewing chroma-key footage.
  • Compare color balance across displays and graphics cards.
Fullscreen tips

Open fullscreen before inspecting the display. Lower room light and clean the panel first so dust, tint and pixel defects are easier to see.

Follow the complete dead pixel test guide

How to use Green Screen online

  1. 1

    Open a pure green fullscreen

    Use the fullscreen control to remove browser chrome and create an even green reference for your display, camera or projector.

  2. 2

    Check the green channel

    Scan the panel for dark pixels, yellow or cyan tint, dirty spots and brightness changes. Compare the result with red and blue screens.

  3. 3

    Download a green AVIF

    Select a common 16:9 resolution and download a pure green background for chroma-key review, video production or projection tests.

Common questions about Green Screen

Is this green screen suitable for chroma key?

It provides a clean, uniform green reference. For professional keying, keep the display or backdrop evenly lit and test the camera exposure before recording.

Can green reveal a stuck pixel?

Yes. A pixel that stays dark or changes to another color on pure green may indicate a sub-pixel or panel issue. Confirm it on other solid colors.

More screen tools

Free browser-based utilities for testing, lighting and creating screen backgrounds.

Color Screen

Open any solid color full screen or download it as an image.

Screen Light

Turn your display into an adjustable warm or cool light source.

Gradient Generator

Build, preview and export smooth two-color backgrounds.

Screen Information

Inspect resolution, pixel density, viewport and display capabilities.