ToolsFree browser-based screen test

Monitor Screen Test

An eight-step desktop monitor check for resolution, pixel defects, bleed, motion response, tearing, gradients, color, and refresh rate.

Device guides
Test workspace

Use every mode and inspect the entire panel, including corners and edges.

Completed 0 of 8 checks
  1. Step 1 of 8

    Resolution Checker

    Read viewport size, screen pixels, device pixel ratio, color depth, orientation, and measured browser refresh rate.

    Start this check
  2. Step 2 of 8

    Dead Pixel Test

    Cycle full-screen colors and custom fields to find stuck, dead, bright, or dim pixels across the panel.

    Start this check
  3. Step 3 of 8

    Backlight Bleed Test

    Display black and low-gray fields in a dark room to distinguish edge bleed, clouding, IPS glow, and uneven backlighting.

    Start this check
  4. Step 4 of 8

    Ghosting Test

    Track moving shapes, text, and fine lines at several speeds to reveal response trails, black smearing, and overdrive overshoot.

    Start this check
  5. Step 5 of 8

    Screen Tearing Test

    Use fast stripes, layered blocks, and scrolling checks to expose frame splits and unstable synchronization.

    Start this check
  6. Step 6 of 8

    Gradient Test

    Inspect grayscale, RGB, and radial transitions for banding, abrupt tone jumps, and weak bit-depth handling.

    Start this check
  7. Step 7 of 8

    Color Accuracy Test

    Compare reference patches, neutral gray ramps, and saturation steps for obvious hue, balance, and clipping errors.

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  8. Step 8 of 8

    Refresh Rate Test

    Measure real-time frame cadence and watch synchronized motion with frame-time history and long-frame counts.

    Start this check
How to use this test

A repeatable process gives more useful results than a quick glance.

01

Prepare the display

Clean the screen, use the device's native resolution, and let brightness stabilize before running Monitor Screen Test.

02

Scan methodically

Run every available mode. Move your eyes across the center, edges, and corners instead of staring at one point.

03

Confirm the result

Repeat suspicious patterns at two brightness levels and compare with another display when possible.

What the result can tell you

Monitor Screen Test

This guided sequence covers the most common display faults for this device class and keeps the checks in a useful inspection order.

Testing notes

Disable night-light, color filters, and automatic brightness while comparing colors or tones.

Use a dim room for dark patterns and normal ambient light for color and brightness checks.

Stop flashing or high-contrast motion tests immediately if they cause discomfort.

Related tests

Device information

Resolution Checker

Read viewport size, screen pixels, device pixel ratio, color depth, orientation, and measured browser refresh rate.

Panel tests

Dead Pixel Test

Cycle full-screen colors and custom fields to find stuck, dead, bright, or dim pixels across the panel.

Panel tests

Backlight Bleed Test

Display black and low-gray fields in a dark room to distinguish edge bleed, clouding, IPS glow, and uneven backlighting.

Motion

Ghosting Test

Track moving shapes, text, and fine lines at several speeds to reveal response trails, black smearing, and overdrive overshoot.

Frequently asked questions

Can this test prove that my screen is defective?+

It can reveal visible symptoms and help you reproduce them, but warranty decisions should be based on the manufacturer's policy and, when needed, instrument measurements.

Are any test results uploaded?+

No. Patterns, calculations, touch trails, and browser measurements run locally in this tab.

Why does the result change with brightness or viewing angle?+

Panel technology, local dimming, tone mapping, viewing angle, ambient light, and automatic display controls can all change what you see.