Observed arrival · 2026-09-11
Screen Tester: A Browser-Based Display Checkup
A free suite of browser tests for inspecting monitors, laptops, TVs, OLED panels, and other displays.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
Field notes
The suite organizes display checks by both defect and device context: users can inspect pixels, gradients, black and white levels, uniformity, motion, and panel-specific artifacts. Its coverage includes OLED image retention, mini-LED local-dimming blooming, sRGB and Display P3 references, and a gamma check aimed at 2.2 for sRGB. The page also provides separate pathways for used-monitor inspections, gaming displays, laptops, TVs, and general checkups.
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
ƒJavaScriptBrowser-side code central
One card from the complete issue