Burn-In Test: Check Your OLED Monitor for Image Retention & Ghosting
Burn-in is the one display failure that creeps in silently — a taskbar outline here, a channel logo there, until one day you can see your old desktop on every dark scene. This browser-based burn-in test sweeps 50% neutral gray, full RGB primaries, moving bars, and checkerboards across your panel so permanent image retention, temporary ghosting, and monitor shadowing become visible in minutes.
Burn-in vs. image retention vs. monitor shadow
These three terms get used interchangeably, but they describe different physics. Temporary image retention is a short-term charge imbalance — especially in LCD panels — that leaves a faint ghost of a static interface for minutes to hours after it disappears. It is reversible and mostly harmless.
Permanent burn-in is cumulative, uneven wear of the light-emitting layer. OLED pixels degrade as they emit light, so a bright static element (taskbar, HUD, logo) wears its pixels faster than the surrounding screen. The worn region is permanently dimmer, and the damage is irreversible.
What many users call "monitor shadow" or "monitor shadowing" is usually one of the above seen on mid-gray backgrounds — or occasionally a stubborn film of temporary retention that outstayed its welcome. The gray-field test below distinguishes them quickly: temporary retention fades after exercise, burn-in does not.
Why 50% neutral gray is the reference pattern
Pure white pushes all subpixels to peak output, and human glare adaptation hides small brightness differences. Pure black turns OLED pixels completely off, so nothing can be judged. At 50% neutral gray (#808080), every subpixel runs at moderate, balanced drive — the operating point where the contrast between healthy and worn emitters is at its maximum.
This is also why burn-in ghosting is most visible in dark-room movie scenes and dim gray game lobbies rather than in bright desktop use. If a shadow of your taskbar or browser chrome is visible on the 50% gray field, the panel has measurable uneven wear.
Cycle through the pure red, green, and blue fields as well. OLED blue emitters degrade fastest, so early burn-in frequently shows up as a color shift in the worn region on the blue field before it becomes obvious on gray.
The 3-step test procedure
Step 1 — prepare. Clean the panel, dim the room, and let the monitor warm up for 10–15 minutes if it was cold. Panel brightness affects how visible faint retention is; test at your normal working brightness.
Step 2 — scan static zones under solid colors. Press F for fullscreen, display 50% gray, and inspect the areas where static UI lives: the taskbar and system tray, browser tabs and address bar, video-call tiles, game HUDs and minimaps, and subtitle bands. Then switch to red, green, and blue to isolate channel-specific wear. Any fixed outline you can see on multiple colors is retention; use the diagnostic checklist on this page to record each zone.
Step 3 — confirm with motion. Launch the sliding color bars and checkerboard modes. Moving high-contrast edges make faint retention pop immediately and also expose pixel response inconsistencies. If you are unsure whether a mark is burn-in or dirt, run the dead pixel sweep on the affected area — a physical defect is visible at pixel scale, while burn-in is a diffuse region.
Fixing and preventing burn-in
If the ghost fades during a video or after the pixel exerciser runs, it was temporary retention — no action needed beyond using auto-hide on your taskbar. Run the exerciser (Gaussian noise and full-spectrum strobes) for 5–10 minutes to speed up dissipation.
True burn-in cannot be reversed, but you can stop it from worsening: enable pixel shift and logo dimming where offered, auto-hide the taskbar and dock, use dark mode, lower OLED brightness for static desktop work, and let the panel run its built-in pixel refresh cycles rather than interrupting them.
Modern OLED monitors (QD-OLED and WOLED alike) ship with panel-care features — periodic pixel refresh, compensation cycles, static-logo detection. Keep firmware updated; vendors tune these algorithms continuously. And if you are shopping for a replacement, note that a screen test on arrival plus a baseline burn-in scan every couple of months is the cheapest insurance you can get.
Frequently Asked Questions
What is a burn-in test?+
It is a visual test that exposes uneven pixel wear by displaying uniform full-screen colors — most importantly 50% neutral gray — where worn regions appear as faint shadows of previously static UI elements like taskbars, logos, or game HUDs.
How long does it take for OLED burn-in to appear?+
With modern panels and mixed content, noticeable burn-in typically requires thousands of hours with bright static elements. Heavy static-desktop use at high brightness can show faint retention within a few months. Risk scales with brightness, static content share, and total hours.
Can burn-in be fixed?+
Permanent OLED burn-in cannot be reversed — the worn emitters have lower maximum brightness. Temporary image retention fades on its own or after running rapid color-cycling exercise. Distinguishing the two is exactly what the gray-field and exerciser tests on this page are for.
Do LCD monitors get burn-in?+
Rarely. LCD image retention is charge-based and temporary, fading after minutes to hours of varied content. Permanent LCD "burn-in" is possible only after extreme static abuse over years; for everyday use, any ghosting you see on an LCD is almost certainly temporary.
Is image retention covered by warranty?+
Policies vary widely. Many OLED TV brands exclude burn-in from standard coverage for non-commercial use or require it to appear within a defined period; monitor brands increasingly include it with conditions. Check your specific policy — and document zones with the diagnostic report from this page.
How often should I test for burn-in?+
A baseline scan when the display is new, then every 2–3 months for OLED panels used with static desktop content. Early wear is far easier to mitigate — dropping brightness or enabling pixel shift early slows progression dramatically.