About ScreenCheck
Professional Display Diagnostics · v1.0
ScreenCheck is a free, professional-grade display testing platform that runs entirely in your browser. Designed for display engineers, gamers, content creators, and everyday users who demand accurate, honest diagnostics without sacrificing privacy.
Our Mission
To give every display owner access to the same diagnostic quality previously available only in professional calibration labs — at zero cost, with zero privacy compromise, and zero installation.
Design Principles
100% Client-Side
All tests run entirely inside your browser. No pixel data, no hardware telemetry, and no display information is ever transmitted to a remote server. Your screen stays your business.
Native Web APIs Only
ScreenCheck uses standard browser APIs: Canvas 2D, requestAnimationFrame, CSS media queries, and the Screen Orientation API. No proprietary drivers, no hardware backdoors, no platform lock-in.
Technical Honesty
We never fabricate hardware metrics. Values reported (refresh rate, color depth, HDR tier) are derived from browser APIs with clear accuracy caveats. When something cannot be measured accurately, we say so.
Zero Bloat
ScreenCheck is a statically generated site. No database queries, no server round-trips. Every page loads from a CDN edge node and renders immediately.
What ScreenCheck Covers
Display Quality
- Dead & stuck pixels
- Uniformity & bleed
- Gradient banding
- Color accuracy
Motion Performance
- Ghosting & trailing
- Refresh rate timing
- Frame pacing
- VRR cadence
Advanced Panels
- OLED burn-in check
- Mini-LED blooming
- HDR validation
- Wide color gamut