White and black
White makes dark pixels and dust-like marks easier to see. Black helps reveal bright stuck pixels, glow, bleed, and backlight unevenness.
Red, green and blue
Pure colour panels isolate sub-pixel families, making colour-specific stuck pixels easier to notice.
Grey and gradients
Grey panels and tone ramps help reveal dirty-screen effect, banding, tint shifts, and uneven panel coating.
What Pixy can and cannot automate
A browser cannot automatically see your panel defects without a camera. Pixy gives you the right inspection surfaces and records the display capabilities it can observe.
Use this checklist while Pixy runs
- Use full screen mode and look slowly across the whole panel.
- Check one colour at a time so a single faulty sub-pixel stands out.
- Look at edges, corners, and the centre, not just the middle.
- Repeat at normal brightness and again at higher brightness if you suspect bleed.
- Do not stare at bright panels longer than needed, especially on OLED screens.
Questions people ask
What is the difference between dead and stuck pixels?
A dead pixel is usually dark. A stuck pixel may remain red, green, blue, white, or another fixed colour.
Can Pixy fix stuck pixels?
Pixy does not promise repairs. Flashing or colour cycling can sometimes help stuck pixels, but it is not guaranteed.
Should I use this before a return window closes?
Yes. A quick full-screen inspection is useful before accepting a new monitor, laptop, tablet, or phone.