About Screen Issues
Free online screen test tool to diagnose dead pixels, stuck pixels, lines, color issues and flickering on any monitor. Multiple test modes, runs in your browser, no download needed.
Screen Issues is a free, browser-based screen testing utility for anyone who wants to check a monitor, laptop display, TV or phone screen. Open the site and run full-screen color tests to spot dead pixels, stuck pixels, bright spots, vertical or horizontal lines, backlight bleed, uneven color and flickering. It offers multiple test modes and practical guides that explain what each display problem looks like and what to do next, such as whether a pixel may be fixable or whether to request a warranty replacement. No download, no signup and no installation are required: it works directly in the browser on desktop and mobile. Useful when buying a new or used monitor, checking a display after shipping, or troubleshooting an existing screen.
