How to interpret the result
A dark point on every bright background is consistent with an unlit pixel; a point locked to one color is consistent with a stuck subpixel. Dust and reflections can look similar.
DP / 5 min
Online dead and stuck pixel test for monitors
Cycle solid red, green, blue, white, black, and neutral backgrounds to inspect the panel edge to edge.
Local-firstNo accountExportable report
LIVE
LOCALLive test
ESC
What this browser test can and cannot prove
This visual inspection cannot measure pixel-defect policy eligibility, intermittent faults, or defects hidden by scaling, image processing, or camera capture.
REPORT
Reports →Keep this result in a local inspection report.
RELATED
Related checks
Backlight bleed and uniformity
Use black and low-gray fields to inspect bright corners, edge leakage, clouding, and viewing-angle effects.
Open testColor gradients and banding
Inspect grayscale and RGB ramps for abrupt steps, clipping, tint, posterization, and dithering patterns.
Open testDisplay geometry and scaling
Inspect viewport size, screen resolution, pixel ratio, orientation, color depth, and fullscreen behavior.
Open testKNOWLEDGE
Related guides
Dead pixel vs. stuck pixel: what the screen pattern actually shows
A cautious way to separate persistent black points, color-locked subpixels, dust, reflections, scaling artifacts, and intermittent defects.
Read guideNew laptop first-day checklist
What to verify while return and exchange options are still simple: identity, exterior, display, input, media, battery evidence, ports, updates, and recovery.
Read guideHow to inspect a used laptop without over-trusting software
A layered inspection that cross-checks seller claims, visible condition, local reports, browser behavior, operating-system diagnostics, and a short real workload.
Read guideBacklight bleed vs. IPS glow
Why dark-screen photos are misleading and how position, angle, brightness, exposure, and panel technology change what you see.
Read guide