Screen Tools

Screen Test

Run an online screen and monitor test with solid colors, grayscale gradient, color bars and an alignment grid. Inspect your display in full screen.

Free · No account
#808080Press F for full screen · Esc to exit
Test color 6 / 6

Use the arrows to move through the test. Take as much time as you need; there is no flashing.

Choose a color to inspect

Inspect the display yourself. These patterns cannot automatically detect faults, repair pixels or replace professional calibration.

When this screen is useful

Screen Test

  • 01

    Uniformity: compare white and mid-grey for patches that stay in the same place as you look straight at the display.

  • 02

    Grayscale: look for abrupt steps or bands in the gradient. Software rendering, screen bit depth and settings can also affect what you see.

  • 03

    Alignment: use the grid to compare straight lines and spacing. Color bars provide a broad visual comparison, not a colorimeter measurement.

How to use it

  1. Choose a preset or enter a HEX color.
  2. Select Full Screen, or press F on a keyboard.
  3. Press Esc or reveal the exit button to return.

Use the arrows to move through the test. Take as much time as you need; there is no flashing.

Runs on your device

Good to know

How do I open screen test in full screen?

Choose a preset or enter a HEX color. Select Full Screen, or press F on a keyboard. Press Esc or reveal the exit button to return.

Can this test automatically find or fix a faulty pixel?

Inspect the display yourself. These patterns cannot automatically detect faults, repair pixels or replace professional calibration.