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Dead pixel test & monitor test

Run a free dead pixel test and monitor test in your browser. This online screen test cycles through white, black, red, green, blue, and diagnostic patterns — click the preview for fullscreen auto-test, or click again to skip ahead.

Select a test, then click the screen to cycle.

Display tests

Pick a test mode, then click the preview for fullscreen auto-test. Colors cycle every 5 seconds — click the screen to skip ahead.

Testing touch input? Touch screen test →

How to Use

  1. Choose a test mode — Solid colors for dead pixel and stuck pixel checks; Gradients, Gamma, or Sports pan for monitor test patterns.
  2. Click the preview to open fullscreen. Colors auto-cycle every 5 seconds, or click the screen to jump to the next step.
  3. Press Esc when finished. Click the same mode button again to stop.

Why use display tests?

Dead pixel test

Cycle white, black, red, green, and blue fullscreen colors — the same dead pixel test method used by monitor review sites. Dark dead pixels show on bright fills; stuck pixels glow on black.

Stuck pixel test

A pure black step reveals bright stuck subpixels on LCD and OLED panels. Pair with our white screen test to catch both dead and stuck pixels before your return window closes.

Monitor test online

Free monitor test for banding, gamma accuracy, contrast uniformity, and motion blur — works on desktop monitors, laptops, phones, and tablets with no app install.

FAQs

What is a screen test?

A screen test displays solid colors or diagnostic patterns on your monitor, laptop, phone, or tablet so you can inspect pixels, contrast, and color accuracy. TestMyGears runs a free screen test in your browser — no app or download required.

How do I run a dead pixel test?

Select Solid colors, click the preview for fullscreen, and watch white, black, red, green, and blue cycle automatically every 5 seconds. You can also click to advance manually. Dead pixels stay dark on bright colors; stuck pixels glow on black.

How do I run a stuck pixel test?

Open Solid colors mode and wait for the black step, or click through until the screen is pure black. Any bright dot that remains is likely a stuck subpixel. On OLED phones, this is the most reliable stuck pixel test method.

How do I test my LCD screen?

Select Solid colors, enter fullscreen, and cycle through the test colors. On an LCD screen, check for dark spots on white, bright spots on black, and color tint across the panel. Use Gamma and Contrast modes for banding checks.

Is this a monitor test?

Yes. This is a free online monitor test covering dead pixels, stuck pixels, gamma ramps, contrast splits, brightness gradients, and motion patterns — the same checks used when reviewing a new display.

What is a display test?

A display test is a structured check using reference colors and patterns. Unlike a single solid color page, this tool auto-cycles through multiple diagnostic views in fullscreen so you can inspect your panel quickly.

How can I check my display?

Pick a test mode, click the preview for fullscreen, and let colors auto-cycle every 5 seconds. Click the screen anytime to skip ahead. Press Esc when done.

Is this the same as UFO Test?

TestMyGears offers similar dead pixel test and monitor test patterns to UFO Test — solid colors, gradients, and motion tests — but runs entirely in your browser with no separate download.

Can I test my phone or OLED screen?

Yes. Open this page on iPhone, Android, or iPad, tap Solid colors, then tap the preview for fullscreen. Pure black reveals stuck pixels on OLED; pure white reveals dark dead pixels.