Safety

Static tests first. Experiments last.

How the main check works

The guided check never flashes. The optional exerciser starts only after you confirm the warnings, and its changing colors stay inside a small movable area.

Protect yourself and the display

  • Stop immediately if you feel discomfort.
  • Never press, tap hard, rub, or massage a pixel.
  • Use comfortable brightness and take breaks.
  • Do not leave bright static test screens unattended, especially on OLED.
  • Prefer the device manufacturer’s built-in maintenance or display test.

Check returns and warranty first

If the device is new, document the issue and check the retailer return window before trying pixel-fixing software. Manufacturer guidance can differ by model, region, and defect type.

Why the animation is limited

W3C guidance treats flashing as a real accessibility risk. The changing colors stay in a small area, begin only after you opt in, stop on a timer, and can be paused immediately. That reduces risk; it does not make animated colors universally safe.