The Best OLED Test Patterns and Images for Checking Your Screen

You want to know if your OLED (or any screen) is healthy — no burn-in, no dead pixels, no uniformity problems. The way to find out is not to stare at your wallpaper; it is to flood the panel with full-screen test patterns and watch how it behaves. Each pattern reveals a different flaw, and a short sequence of them catches almost everything. Here is a field guide to the best OLED test patterns and images, what each one is actually good for, and a simple monthly routine you can run in two minutes.

Why full-screen flat colors work

OLED burn-in, dead pixels, and uniformity issues all share one trait: they are easiest to see against a flat, full-screen field of a single color. A varied real-world image hides defects because your eye is drawn to the content; a solid color removes all the distraction and lays bare any pixel that is misbehaving. That is why every serious screen test — from factory QC to enthusiast forums — comes down to a handful of solid-color slides plus a couple of structured patterns.

The trick is knowing which pattern exposes which problem.

The patterns, and what each one reveals

Gray (a flat mid-gray, around 50%). This is the single most valuable pattern for OLED. Burn-in and uneven pixel wear show up as faint ghosts or patches against a mid-tone background — darker or lighter than the surrounding gray. If a channel logo, news ticker, or game HUD has burned in, you will see its shadow here. Gray is also great for spotting overall brightness uniformity and dirty-looking patches.

Red, Green, and Blue (full primary colors). These isolate the individual sub-pixels. A dead pixel (no light at all) shows as a black dot on every color. A stuck pixel stays locked on one primary color regardless of what you display — so a stuck-red pixel glows on the red slide and looks wrong on green and blue. Cycling through the three primaries also reveals color-specific wear, where one sub-pixel type has aged more than the others.

White (full white). White drives all sub-pixels at once, making it the best pattern for overall brightness uniformity, faint shadows, and "hot" (always-on) pixels. Any region that is dimmer or tinted shows up clearly against a full white field. It is also where stuck-on white pixels are most obvious as a bright dot.

Pure black. On an LCD/LED panel, a full black screen in a dark room reveals backlight bleed and clouding — light leaking from edges and corners. On an OLED, pure black confirms the panel's signature: a truly black screen should look like the display is off, with zero glow. Any stuck-on pixel defect (a pixel that cannot turn off) will show as a tiny lit dot on the black field.

Grayscale ramp / gradient. A smooth ramp from black to white tests for banding (visible steps instead of a smooth transition) and color tint in the grays (a pink, green, or blue cast in what should be neutral gray). It reveals gamma and color-temperature problems that flat fields do not.

ANSI checkerboard and uniformity fields. A black-and-white checkerboard of squares tests local contrast and, on LCDs with local dimming, reveals blooming/haloing around bright squares on a dark background. A grid of uniform gray or white fields maps brightness uniformity across the whole panel zone by zone.

How to run a test properly

The patterns only work if you display them correctly. A few rules make the difference between a useful test and a misleading one:

1. Go full-screen. Use your browser's fullscreen mode (F11 on most computers) so the color fills the entire panel and there is no browser chrome or taskbar contaminating the result.
2. Hide the cursor and any notifications. A static cursor or a notification banner left up can itself contribute to wear during a long test, and it gets in the way of seeing the panel.
3. Dim the room for black and gray tests. Backlight bleed and faint burn-in are invisible in a bright room. Close the curtains and let your eyes adjust for a minute before judging dark patterns.
4. Use your normal brightness — not maximum. Max brightness exaggerates bleed and wear and makes a healthy panel look bad. Test at the brightness you actually use.
5. Sit at a normal viewing distance, then move in close to scan. Edges, corners, and the spots where static UI usually sits (top status area, bottom taskbar zone, centre crosshair) are where defects hide.
6. Move slowly through each color and give each one several seconds. Faint ghosts appear as your eyes settle.

You can open the full set of test patterns and step through them on the screen you want to check.

A two-minute monthly routine

You do not need to run everything every time. For routine OLED health checks, this short sequence catches the vast majority of problems:

1. Gray — look for faint static-image ghosts (burn-in) and uniformity patches.
2. Red — check for dead/stuck red sub-pixels.
3. Green — check for dead/stuck green sub-pixels.
4. Blue — check for dead/stuck blue sub-pixels.
5. White — confirm brightness uniformity and look for hot pixels.

Add a pure black slide if you also want to check for backlight bleed (on an LCD) or confirm OLED's perfect blacks. Run this once a month and you will catch uneven wear long before it becomes visible in normal use, when you still have time to lean on pixel care and varied content.

Why this matters for OLED specifically

OLED's self-emissive pixels give it perfect blacks and infinite contrast, but they also mean each pixel ages independently — which is precisely why burn-in is possible. The good news is that burn-in builds slowly and your eyes adapt to it, so without test patterns you would not notice it until it is advanced. A monthly gray-and-color check is the early-warning system that lets you act while the wear is still mild and compensable.

Summary

• Full-screen flat colors are the core tool — they strip away content and expose pixel and uniformity defects.
• Gray is the best burn-in and uniformity pattern; red/green/blue isolate sub-pixels and dead/stuck pixels; white checks overall uniformity and hot pixels; black reveals backlight bleed (LCD) or confirms perfect blacks (OLED).
• Grayscale ramps test banding and gray tint; checkerboards test local contrast and blooming.
• Test properly: fullscreen, no cursor/notifications, dim room for dark patterns, normal brightness, scan edges and static-UI zones slowly.
• Run a two-minute gray → red → green → blue → white routine monthly to catch OLED wear early.