Color Banding Test
Fullscreen smooth gradients from black to white and through red, green, and blue channels. Low-quality or 8-bit panels show visible steps or bands instead of a smooth blend — a quick way to test if your monitor handles true 10-bit color or relies on dithering.
What you can use it for
- Test if a monitor is true 10-bit or 8-bit+FRC
- Spot banding in photo and video editing workflows
- Compare gradient smoothness between two displays
- Check HDR and SDR gradient handling
How it works
- 1. Customize. Open the Customize panel to set text, colors, theme, and animation speed to your liking.
- 2. Go fullscreen. Click Fullscreen for an immersive, distraction-free display on any screen.
- 3. Done. No login, no install, nothing to download — it runs instantly in your browser and your settings are remembered.
Frequently asked questions
What causes color banding?+
Banding appears when a display cannot render enough shades between two colors — common on 6-bit or 8-bit panels, especially in dark gradients.
Which gradient shows banding best?+
The black-to-white (grayscale) ramp is the most revealing. Color ramps (red, green, blue) help spot channel-specific issues.
More screen tests
Dead Pixel Test
Cycle full-screen colors to find dead and stuck pixels fast.
Screen Uniformity Test
Check brightness and color evenness across the whole panel.
Ghosting Test
A fast-moving object to spot motion blur and ghosting trails.
Backlight Bleed Test
Pure black screen with corner markers to spot edge light leak.
Contrast Test
Shaded squares to calibrate black levels and white clipping.
Resolution Test
Live readout of resolution, viewport, DPI scaling, and aspect ratio.
Text Sharpness Test
Tiny text samples to judge subpixel rendering and clarity.
Overscan Test
A 1-pixel grid and corner circles to fix overscan and cropping.