Touch Screen Test Online.

A free, in-browser diagnostic bench for laptops, monitors, TVs, and phones. Run it on a new display before your return window closes — or on an old one before you blame the wrong part.

Test bench

Tap a swatch to jump straight to it, fullscreen.

For best results: dim the room for backlight-bleed and IPS-glow checks, set your display to full brightness for dead-pixel and uniformity checks, and give each test a few seconds — some defects only show up after the panel warms up.