Works instantly
Every tool loads fast and runs in one click, on phones, laptops and TVs.
About
Black Screen is a free set of browser-based screen tests and display tools. No sign-up, no download, nothing uploaded.
Private by design
Tests run on your device. Readouts like resolution are never sent to us.
Honest by default
No fake ratings or invented results. Estimates are labeled as estimates.
What we build
Full-screen color pages for sleep, OLED battery saving, presentations and photo backdrops, plus tests for dead pixels, backlight bleed, refresh rate, resolution and more. Our guides explain what each test shows and what to do next.
How we keep it free
The site is supported by display ads and affiliate links to monitors and accessories. Ads never appear above a tool or in full screen. Affiliate links are marked, and they never change what we recommend. Read the affiliate disclosure.
Spotted a bug or have an idea?
We read every message.