Screen Uniformity Test
A screen uniformity test helps you compare brightness, tint and patchiness across a display using gray and solid colors.
High brightness can feel harsh in a dark room. Lower brightness if your eyes feel strained.
Shortcuts: F fullscreen, Esc exit fullscreen where supported, Space controls, 1-9 preset colors, arrow keys cycle test colors. In dead pixel fullscreen, tap to advance and swipe left or right to change colors.
Quick answer
A screen uniformity test helps you compare brightness, tint and patchiness across a display using gray and solid colors. Choose a color, open it full screen, adjust brightness if needed, and press Esc to exit where supported.
Summary
| Best for | Checking brightness and tint consistency. |
|---|---|
| Main control | Color presets, brightness, timer and fullscreen. |
| Exit | Press Esc where supported or use the on-screen exit button. |
How to test uniformity
Open the gray screen in fullscreen and sit at your normal viewing distance. Look for areas that appear warmer, cooler, brighter or darker than the rest.
Repeat with white and black. Gray is the main check, but other colors can show tint and glow issues.
Best settings
Use normal brightness first. Then lower and raise brightness to see whether the issue changes. Avoid reflections and test from your normal viewing angle.
Common mistakes
Do not judge uniformity from a sharp side angle unless that is how you use the display. Do not compare two screens with different brightness settings.
Tool category
Browse more tools in Screen Tests.
Related tools
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FAQ
Why use gray for uniformity?
Gray makes uneven brightness and tint easier to compare than many saturated colors.
Is some uniformity variation normal?
Yes. Many displays have small differences across the panel.