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Screen Burn-In vs Image Retention: The Grey-Screen Test That Tells You Which You Have

You glance at a grey loading screen and there it is: a faint outline of your taskbar, or the ghost of a window you closed an hour ago. Before you panic about a ruined panel, there's good news — most of what people call 'burn-in' isn't burn-in at all. It's image retention, and it goes away on its own. But a small number of cases really are permanent. This guide gives you the exact test to tell them apart, honestly explains what a browser test can and can't do about it, and covers prevention and warranty claims for when it really is burn-in.

A monitor displaying a full-screen mid-grey field in a dim room, with a faint ghostly outline of a taskbar and browser window barely visible in the grey
A mid-grey field is the giveaway background — the faint ghost of a static image shows up here far more clearly than on black or white.

Image retention vs burn-in: what's actually different

Both faults look the same at first glance — a faint, static shadow of something that used to be on screen, usually a taskbar, a window border, a channel logo, or UI chrome that sat in one place for hours. The difference is whether the panel recovers.

  • Image retention is temporary. On LCD panels it's usually the pixel's transistor holding a slight residual charge after displaying the same shade for a long time (dielectric relaxation) — the liquid crystal doesn't fully relax back to neutral. OLED panels get a milder version too: localised, temporary wear the panel's own compensation hasn't caught up on yet. Either way, it fades — minutes to a few hours.
  • Burn-in is permanent, uneven aging of the display material itself. Each OLED subpixel is an organic compound that dims slightly every time it lights up; a static taskbar or logo ages its pixels faster than the ones around it, leaving a real physical brightness difference with nothing left to "relax" back. True permanent burn-in on LCD is much rarer, but sustained localised stress can occasionally leave a faint, slow-to-fade mark too.

The practical rule: if it fades, it's retention. If it's still there after a proper wait, it's burn-in.

The grey-screen test: how to tell them apart

Don't judge this on your desktop wallpaper or a video — busy content hides a faint ghost. You need a flat, uniform field, and the mid-tones are the most revealing part of it. Pure black and pure white have very little room for a small brightness offset to show; a 50% grey field has plenty.

  1. Turn off auto-brightness and dim the room so glare doesn't wash out a faint mark.
  2. Fill the screen with a solid mid-grey field and scan corner to corner for any shape — a rectangle, a bar, a logo — that's slightly brighter or darker than the surrounding grey.
  3. Also check a couple of darker grey steps (10–20%) and a near-white step. Retention and burn-in are most visible in mid-tones and shadows, and can vanish entirely in pure white.
  4. Note where the mark is and how strong it looks, then leave the screen off or on a full white field for at least 10–15 minutes (OLED: try an hour if you can; LCD retention can occasionally take several hours).
  5. Reload the same grey field and compare. Gone or clearly fainter: retention. Same strength, same shape: likely burn-in.
Run the test now: open our screen colour test and jump straight to theGray 50% swatch, or use the brightness & greyscale test to step through the 10–20% and 50% levels with the arrow keys — press F for full screen. Both fill the entire panel edge-to-edge, which is exactly what you need to expose a faint retained image against a clean, even background.

What this test can — and can't — do

Be clear-eyed about what a browser-based test achieves here. It is genuinely reliable for revealinga faint retained image against a clean field where your normal desktop would hide it, and fordistinguishing retention from burn-in via the fade-and-recheck method above. That part works — it's the same principle display technicians use.

What it cannot do is repair genuine OLED burn-in. There is no full-screen colour or pattern a web page can show that reverses physically uneven wear in the organic emissive layer. Real recovery — where it's possible at all — comes from the panel's own built-in pixel-refresh / compensation cycle(LG calls theirs "Pixel Refresher"; most OLED TVs and monitors run an equivalent automatically after several hours of cumulative on-time, or when you power them off), from simple time, or from manufacturer service. Anything a web page displays is, at best, a way to exercise the panel while you wait for that built-in process — not a fix in itself.

Close-up of an OLED monitor's on-screen display menu highlighting a Pixel Refresher or panel maintenance setting, with a soft blue interface glow reflected on the desk
If retention doesn't clear, look for a built-in pixel-refresh or panel-maintenance option in the monitor's own menu — that's the only thing that actually compensates for OLED wear.

Clearing temporary retention

  1. Give it time first. Most retention clears within an hour or two of not showing the offending static content — check again before trying anything else.
  2. Run a full white or colour-cycling field over the area for 10–30 minutes. It won't "erase" anything by itself, but it stops reinforcing the pattern and gives the panel a uniform load to relax against.
  3. Let the display sleep or power off for a few hours or overnight. Many OLED panels only run their internal compensation cycle when powered down, so this is often what actually clears it.
  4. Check the monitor's menu for a manual "Pixel Refresh" or "Panel Maintenance" option and run it if your usage pattern (long sessions, static UI) suggests it's due.

If it doesn't fade: burn-in and what actually helps

If the same mark is still there at full strength after a proper wait, you're most likely looking at real burn-in. At that point, be honest with yourself about your options:

  • There's no user fix. Software tricks, "burn-in removal" apps and pixel-cycling patterns exercise the panel but don't reverse existing uneven wear.
  • Manufacturer pixel-refresh cycles help marginally by evening out surrounding pixels' wear to reduce the contrast between the burned-in area and the rest of the screen — they don't restore the burned-in pixels themselves. See LG's own troubleshooting guidance on image burn-in.
  • Check your warranty. Some OLED monitor and TV makers offer specific burn-in coverage (commonly one to three years) separate from the general warranty.
  • Document it with dated photos of the grey field before contacting support — it's the evidence a service claim will ask for.

Preventing it going forward

  • Auto-hide the taskbar and avoid pinning bright, static UI elements to the same spot for hours at a time.
  • Vary your content and take breaks from static dashboards, tickers, or paused video — the classic causes.
  • Use a screen saver or sleep timer so an idle static screen isn't left displaying unattended.
  • Enable pixel-shift or logo-dimming if your OLED offers it, and lower brightness for long, static sessions — OLED wear scales with how hard each subpixel is driven.

When it's a warranty or return issue

A brand-new panel that shows retention within days of light use — especially on an LCD, where true burn-in is rare — is a legitimate reason to flag a defect with the retailer while your return window is open. A mark that develops gradually on an OLED panel after months of genuinely static, high-brightness use is closer to expected wear, and your recourse is the manufacturer's burn-in warranty (if any) rather than a straightforward return. Either way, run the grey-field test, document what you see and when, and don't assume the worst until you've given it the fade-and-recheck a fair chance first.

Test it yourself

Screen Colour TestFlood the screen with pure white and a 50% grey field — the cleanest background for spotting a faint retained ghost.Screen Brightness & Greyscale TestStep through black-to-white grey levels; the mid-tones are where retention and burn-in show up most clearly.Dead & Stuck Pixel TestRule out a single stuck or dead pixel before you blame burn-in for one misbehaving dot.

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