PNG images can be up to 4096 × 4096 pixels.
Open a neutral gray screen in fullscreen for monitor uniformity checks, color tint inspection, image retention testing, or a balanced background.
A neutral gray screen makes brightness shifts, color tint, dirty-screen effect, image retention, and uneven panel areas easier to compare without the glare of full white.
Click the preview or Fullscreen to enter. Tap the fullscreen view or move the pointer to reveal the exit button, which hides after a few seconds. Esc also exits. If native fullscreen is unavailable, the view fills the page and browser controls may remain visible.
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.