Full-screen solid colors.
Test your monitor.
Check pixels, refresh, ghosting and gamma. No setup required.
Pick a screen check.
No setup. Start with pixels, refresh, or visual references.
Choose one.
Setup tips are optional.
8-second frame sample.
Visual references below.
Visual toolsOptional.
Track the target with your eyes or a pursuit camera. Blur width is human-inspected evidence, not a browser-measured GtG value.
FRAME-SKIP REFERENCE / Photograph this strip with a suitable shutter speed. Missing or doubled positions can indicate uneven browser delivery; this is not a panel timing certificate.
Look for tearing, uneven motion or heavy trailing. This visual reference does not measure panel response time.
Step back until the one-pixel dither blends. Choose the target whose left and right halves appear closest. This estimates visual transfer behavior; it does not calibrate the panel.
These fields test browser color syntax and media queries. They do not prove panel gamut volume, tone mapping, peak brightness or HDR accuracy.
Recommended setup checks are incomplete
One or more warm-up, lighting, cleaning or zoom checks are still open.
Recommended setup checks are incomplete
One or more warm-up, lighting, cleaning or zoom checks are still open.
- The test can run now, but uncontrolled room or browser conditions make visual comparisons less repeatable.
- For quick checks, start the pixel or refresh test directly.
- For repeatable evidence, warm the display, clean the panel, control room light and use 100% browser zoom.
Repeat the same pattern after changing only one display setting.
Run the eight-second frame pacing capture
No fixed-window animation-frame result is available.
- The timing protocol has not completed in this page session.
- Keep the tab visible and run Measure refresh rate (8 sec).
Accept the result only when at least 180 intervals were captured.
Actions are generated from visible Evidence fields and versioned product rules. They do not identify a physical root cause with laboratory certainty.
Compare repeat tests without an account.
Complete this protocol before saving a baseline.
Save 3 more compatible run(s).
Control the environment before reading the number.
This checklist does not block the instrument or certify the setup. It records no data; it only reduces avoidable comparison errors.
Useful evidence, without pretending to be a laboratory.
Refresh is browser-estimated.
Browser dimensions are not panel hardware specs.
Pixel and motion checks need your eyes.