Browser-Based Display Diagnostic & Screen Inspection Platform
Empowering display buyers, professionals, and everyday users with fast, client-side screen testing utilities without downloads or accounts.
What is DeadPixelTests.com?
DeadPixelTests.com is a lightweight, zero-dependency online platform designed to inspect screens for visual defects. Whether you just unboxed a brand-new OLED gaming monitor, bought a refurbished laptop, or are verifying a 4K TV during the retailer return window, our tools allow you to quickly cycle through pure solid colors and test patterns to spot anomalies.
All visual tests operate 100% locally in your web browser. No software installation, browser plugins, or user accounts are required.
Dead & Stuck Pixel Testing
Isolate primary RGBW color channels to identify unlit black dead pixels, bright hot pixels, or single-color stuck subpixels.
Stuck Pixel Stimulation
Interactive floating RGB strobe box to stimulate unresponsive liquid crystal transistors in LCD, LED, and VA panels.
Complete Screen Inspection
A guided 9-step structured diagnostic covering color purity, grayscale gradients, backlight bleed, and refresh rate detection.
Why the Website Exists
Most retail store return policies offer a limited 14 to 30-day window for immediate exchanges or refunds. After this window expires, customers must rely on manufacturer warranty terms, which frequently have strict threshold requirements (such as requiring 3 to 5 dead pixels before approving a replacement).
DeadPixelTests.com was built so any user can inspect their display in under 60 seconds the moment they receive it, saving time, money, and hassle.
Honest Limitations of Browser-Based Testing
We believe in transparency. Browser-based display diagnostics provide helpful visual screening aids, but they have inherent boundaries:
- Visual Observation: The browser generates pure color canvases, but detecting defects depends entirely on the user's careful visual inspection.
- No Factory Calibration: A web page cannot replace specialized hardware colorimeters, spectrophotometers, or optical sensor probes.
- Not a Warranty Determination: Our generated reports are diagnostic screening records and do not represent binding manufacturer warranty approvals.
Contact & Support
Have questions, suggestions, bug reports, or partnership inquiries? Reach our engineering and editorial team directly:
Or submit an inquiry through our Contact Form.