Directory
All display testing tools
26 tools, grouped by what they are for. Every one of them works, and every one says what it cannot tell you.
Solid colour screens
Nine full-screen fills, one click each. Black and white find dead pixels and bleed, the primaries find single-channel faults, grey finds banding and tint.
Guided checks
Step-by-step sequences that walk a whole device in one sitting.
Pixels and solid colour
Full-screen fields for finding bad pixels, bleed and dirt.
- Dead pixel test Nine exact full-screen fields, so a bad pixel has nowhere to hide.
- Stuck pixel fixer Rapid colour cycling in a window you place over the bad pixel.
- Full screen colour test Any colour, full screen, one click: with a picker, slideshow and download.
- Black screen Pure #000000, for bleed, glow, dust and OLED black level.
- White screen Pure #FFFFFF, for dust, dark pixels, tint and uniformity.
- Red screen Pure #FF0000, isolating the red sub-pixel across the panel.
- Green screen Pure #00FF00, the most revealing primary for dark pixels.
- Blue screen Pure #0000FF, where blue sub-pixel faults finally show.
- Gray screen Flat grey at any level, the field that exposes unevenness.
- Yellow screen Pure #FFFF00, red and green on, blue completely off.
- Orange screen A warm field for catching tint, night mode and white balance drift.
- Purple screen Red and blue on, green off, the green sub-pixel check.
- Backlight bleed test Black field plus the bleed, glow and clouding distinction most sites skip.
OLED, burn-in and uniformity
Retained images, uneven wear and blotchy grey fields.
Colour and tone
Greyscale, near-black, banding and HDR capability.
Motion and timing
Refresh rate, frame pacing, ghosting and blur.
- Refresh rate test Median-based Hz measurement, with jitter and dropped frames.
- Frame rate test Live FPS, 1 per cent lows and frame pacing under a chosen load.
- Ghosting test Moving objects at several speeds, for trailing and overshoot.
- Motion blur test Moving objects and readable text, for persistence-driven blur.
Input and geometry
Touch response and what your browser reports about the screen.
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