Display Test
Universal display diagnostics for 4K/8K monitors, Smart TVs, projectors, laptops, and mobile screens.
Diagnostic Sequence Preview
This test automatically cycles through calibrated solid color surfaces.
What to Look For
Whether inspecting a massive 65-inch OLED TV, a 34-inch ultrawide gaming monitor, or a smartphone screen, this universal display test provides pure uncompressed color output to ensure your panel meets manufacturer standards.
- Dirty screen effect (DSE) and horizontal or vertical banding on large panels.
- Local dimming blooming or halo artifacts around high-contrast transitions.
- Dead subpixels and stuck bright points across high pixel-count displays.
- Backlight bleeding around panel bezels and mounting points.
Display Preparation Tips
- 1Open your display's built-in web browser (e.g., Tizen, webOS, Chrome, Edge, Safari).
- 2Enable fullscreen mode in your browser to remove URL bars and browser controls.
- 3Ensure picture mode is set to 'Standard', 'Movie', or 'Filmmaker Mode' rather than oversaturated Vivid modes.
- 4View from your standard seating distance and then up-close for fine subpixel inspection.
Frequently Asked Questions
Can I use this on a Smart TV?
Yes! Open your TV's browser (LG webOS, Samsung Tizen, Sony Google TV), navigate to pixelcheck365.com/display-test, and click Start Test.
What is Dirty Screen Effect (DSE)?
DSE refers to blotchy, cloudy patches or vertical streaks visible when viewing panning shots of uniform color (like sports fields or blue sky). It is tested using 50% neutral gray.
Ready to Check Your Screen?
Launch full-screen diagnostics right now to verify pixel health, backlight uniformity, and color fidelity across your entire display.
Start Free Screen Test