PNG images can be up to 4096 × 4096 pixels.
Open a solid green screen in fullscreen for pixel and color-channel checks, display uniformity testing, a simple chroma-key background, or a green PNG.
Green uses a bright primary channel that can expose dark, stuck, or tinted pixels quickly. The uniform background can also work as a basic chroma-key surface for small video and photography setups.
Choose a preset or custom color before opening the preview in fullscreen. Press Esc to leave fullscreen, then adjust the color and open it again.
For a better display check, view several colors in a dim room and keep the browser zoom at its normal level. The tool displays solid browser colors; it does not calibrate the monitor or repair pixels.