ONLINE HARDWARE TEST
Screen Test
Inspect dead pixels, colors, gradients, contrast, sharpness, uniformity and motion in fullscreen.
Choose a field. Inspect every edge.
Jump straight to a common color or preview the complete diagnostic sequence.
Use 100% browser zoom for fine-line and checkerboard patterns.Zoom and display scaling can soften one-pixel detail; this warning does not affect solid-color checks.
Fullscreen: click, Space or → for next · ← for previous · swipe horizontally on touchscreens · Esc or Exit to finish.
LOCAL DIAGNOSTIC REPORT
Screen Test result
Open patterns fullscreen and inspect the entire panel before interpreting the result.
- Patterns viewed
- 0 / 14
- Viewed
- None
- Screen reported
- Unavailable
- Pixel ratio
- Unavailable
- Motion speed
- Fast
What this result supportsWhich generated visual patterns were displayed by this browser at the reported screen metrics.
What it cannot proveWhether a visual defect was present; dead pixels, backlight bleed, banding and motion artifacts require a human inspection of the physical panel.
These are visual inspection patterns. Look for stuck pixels, uneven illumination, banding or artifacts; KeyTest does not automatically judge the physical panel.
ABOUT THIS TEST
Fast answers without installing software.
Inspect dead pixels, colors, gradients, contrast, sharpness, uniformity and motion in fullscreen.
Browser limitation: Browser diagnostics provide practical signals but cannot replace physical inspection or professional repair.
Diagnostic input is processed locally for this test and is not uploaded by KeyTest.