Uses of a white screen
- Find dead pixels and dust: dead pixels show as black dots on white.
- Clean your screen: smudges and dust are easiest to see on white.
- Soft light for video calls: a second screen showing white lights up your face.
- Check screen uniformity: look for yellow or dim patches.
- Trace drawings on paper placed over a tablet screen.
How to use
Choose a brightness and click Open full white screen. Click anywhere or press Esc to exit. “Open in new tab” gives you a white page you can keep beside other windows.
Spots on a white screen?
Soft white or yellow patches are usually pressure marks or backlight spots, common on older laptops. Sharp black dots are dead pixels – check them with our dead pixel test.
Using a white screen as a light
A spare laptop or monitor showing a white screen makes a soft, even light for video calls, product photos or reading. Lower the brightness option for warmer, gentler light, and position the screen slightly above eye level for the most flattering light on your face.
Checking a used laptop’s screen
When buying a used laptop, a white screen quickly reveals:
- Dead pixels – black dots.
- Pressure marks – soft white or grey blotches.
- Yellow tint or uneven brightness – an ageing backlight.
- Scratches on the screen surface, easier to see on white.
At BudgetLappy we note visible screen marks in our listings, so there are no surprises on delivery.
Cleaning your laptop screen safely
- Switch the laptop off and let it cool.
- Use a dry microfibre cloth first.
- For smudges, lightly dampen the cloth with water (never spray the screen directly).
- Avoid tissue paper, glass cleaner and alcohol on matte screens.
Frequently asked questions
Will a white screen damage my laptop?
No. It just displays white. For long use, lower brightness to save battery.
How do I exit?
Click anywhere or press Esc.