Monitor Test

Inspect your display with calm test patterns and mark anything you notice. Use the touch area to see pointer paths reported by your browser.

Processed on your deviceFree · No account needed

Inspect calm patterns yourself. This page cannot see defective physical pixels, calibrate your display or repair it. Colour settings, scaling and room light affect what you see.

PatternInteraction

Surface: 0 × 0 CSS px · Browser pixel ratio: 1.00 · Current / maximum simultaneous pointers: 0 / 0

Your observations

Horizontal position (%)Vertical position (%)

0 user-marked observations

I have visually inspected the displayed patterns.

Untouched regions are untested, not faulty. Pointer paths show only browser events and retain up to 20 paths, with at most 128 points each. Active contacts remain visible; older completed paths are replaced. Browser/system gestures may intercept screen edges. Pixel ratio includes scaling and zoom; CSS pixels are not a count of physical panel pixels. No flashing or automatic animation is used.

Preparing your tool…

How to use it

Start a static colour, gradient or grid pattern.
Use optional full screen and inspect the display; press Escape to leave.
Record your observations and draw short paths in the touch area.
Reset the patterns and review a local support report.

A point visible on a colour field is your observation, not an automatic dead-pixel diagnosis. Compare several static colours.

Details & limits

Manual observations only. Up to 10 simultaneous touch points and 20 paths of 128 points each. Browser pixels and device-pixel ratio do not identify physical panel resolution.

Can this certify colour accuracy or detect every defective pixel?

No. Browser rendering, colour management, scaling and your observations affect the result. This is not a calibrated display measurement.

Your observations

How to use it

Details & limits

Inspect test patterns rather than an automatic diagnosis

Related tools

Your observations