Fill your whole screen with solid colors and gradients to spot dead or stuck pixels, backlight bleed, burn-in and uneven color on a monitor, laptop, phone or TV. Works fully offline in your browser.
Controls: click, Space or the Right arrow = next color. Left arrow = previous. Esc = exit. Press F for fullscreen again if the browser leaves it.
Dead pixel: a tiny dot that stays black on every color - easiest to see on the white and the colored screens.
Stuck pixel: a dot stuck on one color (red, green or blue) - easiest to see on the black screen.
Backlight bleed: pale glowing patches along the edges or corners on the black screen. View it in a dim room.
Burn-in / uneven color: faint ghost images or patchy tint on the white, gray and gradient screens, mainly on OLED panels.
Tip: clean the screen first - dust and fingerprints look exactly like dead pixels. Get close and scan every corner.