Check your display step by step.
All options are visible here. Test names start a test; guides explain how to use it.
About 11 seconds of browser checks and a result list. Dead pixels, backlight bleed and other checks requiring observation are not included.
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Test library · 16 + 8
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Featured
4 tests and toolsDead & Stuck Pixel Test
Cycle pure colors to locate permanently dark, glowing, or stuck RGB sub-pixels.
IPS Glow / Light Bleed
Output true black. Check for uneven lighting or 'glowing' seeping from panel corners in a dark room.
UFO Ghosting & Overdrive
Track fast-moving UFO objects. Test your overdrive setting; too low causes smearing, too high causes inverse halos.
Screen Tearing (V-Sync)
Use rapid horizontal movement to compare visible tearing while changing V-Sync or VRR settings; this does not certify that either feature is working.
OLED Burn-in & Retention
Use 50% gray and deep red screens to spot ghosted UI elements (taskbars/HUDs) permanently etched into your OLED.
Panel Uniformity / Dirty Screen
Test for the "Dirty Screen Effect" (DSE). Colors should look identically bright from corner to corner.
Stuck Pixel Fixer Tool
Flashing content. For visual checks, not automatic diagnosis or laboratory measurement. Exit: Esc.
Gamma Calibration (2.2)
Verify if your display is accurately targeting a 2.2 Gamma curve using visual blend blocks to ensure correct brightness.
Black Saturation (Black Crush)
Check if you can distinguish RGB 1 from RGB 0. Critical for dark movie scenes and horror games.
White Saturation (Blooming)
Check if extreme RGB 254 details are blooming into pure white, causing you to lose highlight detail.
Color Banding (8-Bit / 10-Bit)
Check for smooth color gradations without distinct stepped 'bands' to evaluate your panel's bit depth.
Color Distance / Contrast Ratio
Evaluate exact color separation thresholds between distinct hue values on the sRGB spectrum.
Response Time / Input Lag Demo
For visual checks, not automatic diagnosis or laboratory measurement. Exit: Esc.
Viewing Angle Washout (TN/VA/IPS)
View geometric patterns from sharp off-center angles to identify extreme color wash-out specific to your panel type.
Sub-Pixel Rendering & Text Clarity
Micro-text and 1px lines help identify anti-aliasing issues caused by non-standard RGB sub-pixel layouts like BGR.
Pixel Inversion / Moire Flicker
Examine tight checkerboards to see if screen flickering occurs due to LCD voltage inversion cycles.
Hz and frame-skipping check
For visual checks, not automatic diagnosis or laboratory measurement. Exit: Esc.
Cable bandwidth calculator
For visual checks, not automatic diagnosis or laboratory measurement. Exit: Esc.
OLED and near-black test
For visual checks, not automatic diagnosis or laboratory measurement. Exit: Esc.
Pixel warranty guide
For visual checks, not automatic diagnosis or laboratory measurement. Exit: Esc.
PPI and screen-size comparison (A/B)
For visual checks, not automatic diagnosis or laboratory measurement. Exit: Esc.
PPI and screen-size comparison
For visual checks, not automatic diagnosis or laboratory measurement. Exit: Esc.
Monitor test report
For visual checks, not automatic diagnosis or laboratory measurement. Exit: Esc.
Automatic display check and results
Check browser-reported screen information and ten seconds of animation timing. Results are generated on your device.
No matching test found
Try another word: pixel, ghosting, Hz.
For visual checks, not automatic diagnosis or laboratory measurement. Exit: Esc.
Explore all tests ↓EVERYTHING AT A GLANCE
24 tests and toolsExplore all tests
All options are visible here. Test names start a test; guides explain how to use it.
Colour and tone
5Motion and clarity
6Tools and report
8- Hz and frame-skipping check
- Cable bandwidth calculator
- OLED and near-black test
- Pixel warranty guide
- PPI and screen-size comparison (A/B)
- PPI and screen-size comparison
- Monitor test report
- Automatic display check and results
Related pages
Dead Pixel Test and the Dead Pixel Guide · Ghosting Test and the Ghosting Guide · IPS Glow Test and the IPS Glow Guide · Screen Tearing Test and the Screen Tearing Guide
Observation notebook
We do not diagnose automatically. Record what you see, change one setting, and compare under the same conditions. Records stay in this browser and are not sent to a server.