Observed arrival · 2026-10-06

Screen Test: a free diagnostic bench for displays

screentest.dev Visit website

Editorial interest 78/100 Selection signal · not a rating of the site

A browser-based suite of monitor, phone, and TV checks for pixels, motion, color, backlight, touch, and more.

Landing page captured for the 2026-10-06 issue.

For: People checking monitors, phone screens, and TVs
Worth noticing: Its ghosting test uses moving UFOs, while the input-lag test describes a two-screen camera method.

Field notes

The homepage starts a fullscreen sequence with a white-screen check and offers keyboard shortcuts to move through it. The individual test descriptions name their inspection patterns, including a moving UFO for motion artifacts and a paintable grid for touch dead zones. Separate sections cover phone and TV checks, while the calculators include aspect ratio, PPI, and screen size.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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