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