PeakNits Display Test

Find out what your HDR or OLED monitor can really do – in about 5 minutes, no knowledge needed. Just follow the steps, click what you see, and get a report you can save as PDF.

Works best in Chrome or Edge, in fullscreen, in a dim room. Results stay on this device.

Detected automatically

What you will test

1. Peak brightness – how bright small HDR highlights get.
2. Large bright areas – how much the screen dims big bright areas (OLED brightness limiter).
3. Black level – true black and the darkest shadow details.
4. Smooth gradients – whether colour ramps show stripes (banding).
5. Colours – how vivid colours get: standard sRGB, Display-P3 or beyond.
6. Motion clarity – how sharp moving things look at your refresh rate.
7. Pixels & burn-in – dead pixels, uneven areas and OLED burn-in.

Any test can be skipped.

Or test just one thing

Each check also runs on its own, in a minute or two.

• HDR brightnessHow bright highlights get, and how much big bright areas dim.
• Black levelTrue black and the darkest shadow detail.
• GradientsStripes in smooth colour ramps – 8-bit or 10-bit.
• ColoursStandard sRGB, Display-P3 or beyond.
• Refresh rateYour Hz right away, plus motion clarity.
• Dead pixelsDark or stuck dots on full-screen colours.
• Burn-inFaint shapes left by static images on OLED.
• UniformityPatches, darker edges and backlight bleed.

Every pattern is drawn live at your display's native resolution with exact brightness values – no compressed video. · PeakNits home · Music visualizer · Privacy · Statistics settings