New & Old Monitor Test: Online Display Test & Screen Test Tool

Welcome to the complete suite of monitor testing tools. Whether you are checking a new display for defects or calibrating an old monitor for color accuracy, select a tool below to begin your diagnostic.

White Screen Online

The original bright screen testing, reading light, and meditation tool.

Dead Pixel Test - Check Your Screen Online

Detect dead, stuck, or hot pixels on your LCD, LED, and OLED monitors instantly.

Dead Pixel Fixer – Repair Stuck Pixels

Fix and revive stuck pixels on your display using rapid RGB color flashing patterns.

Monitor Color Calibration Tool – Test Display Color Calibration

Professional monitor calibration tools to test brightness, contrast, and gamma settings for optimal viewing.

Monitor Color Accuracy Test – sRGB Test & RGB Test for Your Display Screen

Test monitor color accuracy, sRGB gamut reproduction, and true RGB color purity.

Backlight Bleed Test & Color Uniformity Testing Tool

Check for backlight bleeding, clouding, and IPS glow to ensure perfect screen uniformity.

Computer Monitor Yellow Tint Tester & Fixer

Check your display for yellowish tint discoloration, screen burn-in, or blue light filter issues.

Refresh Rate Test – Screen Hz Tester

Measure your screen Hz and frames per second to check if your monitor runs at 60Hz, 120Hz, or 144Hz.

Screen Burn-In Test & Fixer

Detect image retention and ghosting, then run the burn-in fixer to help clear it on OLED and LCD screens.

Touch Screen Test

Test your mobile smartphone or tablet screen for dead zones and multi-touch digitizer issues.

What is My Screen Resolution?

Instantly detect your exact logical and physical screen resolution, pixel ratio, and display dimensions.

iPhone Black Screen Test

Download a pure black image to test your iPhone for dead pixels, backlight bleed, and OLED defects.