PNG images can be up to 4096 × 4096 pixels.
Open a solid red screen in fullscreen to inspect red-channel response, find pixel defects, compare display uniformity, or download a red PNG.
Full-screen red makes dead, stuck, or discolored pixels stand out against one primary color. Move your eyes across the panel to check for patches, lines, or areas that render red unevenly.
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.