Dead & stuck pixels
Nine pure colors, edge to edge. A dead pixel stays black, a stuck one stays lit.
1 minGuide
OLED Burn-in Test
Mid greys and colors reveal ghosts of taskbars, logos and HUDs. 100% in your browser - nothing is uploaded.
2-5 min7 patterns
Click the preview to run it full screen
Your display
Updates when you move the window to another screen- Resolution
- ---
- device px
- Pixel ratio
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- devicePixelRatio
- Refresh rate
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- measured in this browser
- Color gamut
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- reported by the browser
- HDR
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- standard range
- Orientation
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- current
How to run the oled burn-in test
01Brightness up, room dim
Set brightness to 50 to 100% and dim the room.
02Step through greys and colors
20%, 35% and 50% grey, then the dim red, green and blue.
03Look where static UI sits
Taskbar, status bar, logos, subtitles, game HUD: faint shapes there are burn-in.
04Buying used? Test first
Run it on the seller’s screen before you pay, it takes two minutes.
What to look for
- A faint shape of a taskbar, dock, status bar or logo on flat grey.
- A band or shape visible on only one color, since subpixels age at different rates.
- After the retention test: a fading ghost of the checkerboard on the grey field.
What counts as a defect
- A shape that stays after the panel has been off for a while and after a pixel refresh cycle is burn-in.
- A ghost that fades within minutes is image retention, which is normal on OLED and not damage.
- Burn-in on a new screen is not normal, and warranties treat it differently per brand.
What to do next
- Run the panel’s own pixel refresh or compensation cycle from the settings menu, then test again.
- Hide the taskbar, use dark mode with changing wallpapers and enable the panel’s screen savers.
- Buying used: faint burn-in lowers the fair price; clear burn-in on every grey is a reason to walk away.
Other screen tests
Each one checks a different part of the panel. The guided check runs them all in order.
Uniformity & clouding
Flat greys and white show clouding, dirty-screen effect and tinted zones.
1 minGuide
Banding & gradients
256 equal steps per ramp. A good panel shows them evenly, a weak one clumps them.
1 minGuide
Sharpness & geometry
One-pixel grids, checkerboards and circles expose scaling blur and bad geometry.
1 minGuide
Refresh rate & tearing
Measures the real frame rate in this browser and shows tearing on a moving bar.
30 sGuide
About the oled burn-in test
OLED pixels age with use, and pixels that showed the same bright element for thousands of hours age faster. The result is a faint permanent shadow of a taskbar, a channel logo or a game HUD. It shows best on flat mid greys and dim single colors, which is what this test displays. A separate retention test tells temporary retention from real burn-in.
It is one of the tests in the Screen & Monitor Test, which also runs a guided check through every test and ends in an inspection reportfor a return or RMA. Every pattern is drawn on your screen's own pixel grid, 100% in your browser - no upload, no install, no account needed.
Frequently Asked Questions
Image retention is a temporary ghost of something that was on screen, and it fades within minutes. Burn-in is permanent uneven ageing of the pixels, and it stays after the screen has rested and run its refresh cycle.
Real burn-in cannot be reversed, only made less visible. The panel’s pixel refresh or compensation cycle evens out mild cases. Videos that promise to remove it mostly age the rest of the panel to match.
No. Three minutes of a static pattern can leave short-lived retention on some OLEDs, which is exactly what the test shows you, and it fades on its own. It does not cause permanent burn-in.
Safari on iPhone does not allow web pages to go truly full screen. The test fills the whole visible area and hides all controls instead; rotate to landscape, or add the page to your Home Screen, to get the most of the panel in view. iPad and Android support real full screen.
No. Every pattern is drawn locally in your browser, and the inspection report is built and downloaded on your device. Nothing about your screen or your results leaves the browser, and no account is needed.
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