How to run this test
Use native resolution
Confirm the display is using its recommended resolution and scaling. Reset unusual picture enhancements if you want a neutral baseline.
Start with grayscale
Look for a color tint in neutral gray and check whether dark and bright steps remain distinguishable.
Inspect gradients
A smooth gradient should not break into obvious stripes. Compare color and grayscale gradients and note where banding appears.
Check fine detail
Use the grid and alternating-pixel pattern to reveal scaling, sharpening halos, chroma subsampling, or focus problems.
How to interpret what you see
Several darkest steps merge into black. Check brightness, black level, RGB range, room light, and dynamic contrast.
The brightest steps merge into one white patch. Check contrast, white level, HDR/SDR mode, and picture enhancement settings.
Visible stripes may come from source bit depth, compression, GPU output, browser rendering, or the panel. Compare another browser and reference file.
Neutral gray appears noticeably pink, green, blue, or yellow. Disable night modes and compare under neutral room lighting.
Visual check versus calibration
Use this test to catch setup errors and obvious display behavior. If you edit photos or video, design for print, or require color-critical accuracy, use a hardware measurement device and establish a documented target for white point, luminance, gamma, and color space.
ScreenVitals provides a controlled visual aid. Results depend on your panel, brightness, viewing angle, room lighting, browser, and—when photos are used—camera exposure. It does not replace manufacturer testing or calibrated measurement equipment.