DEAD PIXEL TEST
CHOOSE COLOUR SET
CLASSIC black, white and RGB colours.
DARKS hot pixels and glow checks.
BRIGHTS dark dead pixel checks.
TEST MODE
CHOOSE MODE
MANUAL uses NEXT COLOUR or SPACE.
AUTO cycles every few seconds.
TIP manual is best for careful checking.
START PIXEL TEST
LAUNCH CONTROL
CLICK colour output to exit.
ESC exits overlay or fullscreen.
USES & RELATED TESTS
USES
Check monitors before buying or selling.
Inspect phone, tablet and TV displays.
Confirm stuck red, green or blue sub-pixels.
TIP clean the screen before judging dots.
RELATED TESTS
HOW TO USE DEAD PIXEL TEST
BASIC USE
Choose a colour set.
Choose manual or auto mode.
Press START or FULLSCREEN.
Click colour screen to exit.
WHAT TO LOOK FOR
Black dots on bright colours.
Bright dots on black.
Pixels stuck on one colour.
Uneven patches or tint.
DEVICE TIPS & SEARCHES
DEVICE TIPS
Clean the screen first.
Use moderate brightness.
Inspect slowly from close range.
Then re-check at normal distance.
COMMON SEARCHES
dead pixel test
stuck pixel checker
monitor pixel test
phone dead pixel test
PIXEL DEFECT GUIDE
DEAD PIXEL
A dead pixel stays black.
It is easiest to see on white.
It may look like a tiny dark speck.
Clean dust before deciding.
STUCK PIXEL
A stuck pixel stays coloured.
It may show red, green or blue.
It changes visibility by colour.
Check all RGB screens.
HOT PIXELS & UNIFORMITY
HOT PIXEL
A hot pixel stays bright.
It is easiest to see on black.
It may be white or coloured.
Recheck in a dark room.
UNIFORMITY
Solid screens reveal patches.
Edges can look darker.
Tint can shift across panels.
Use gradient after this test.
COLOUR SETS
CLASSIC SET
Black and white screens.
Red, green and blue screens.
Cyan, magenta and yellow.
Best general test.
DARKS SET
Near black screen.
Dark grey screen.
Dark RGB screens.
Best for glow and hot pixels.
BRIGHTS & MODES
BRIGHTS SET
White and light grey.
Light cyan and magenta.
Light yellow screen.
Best for dark dead pixels.
MANUAL VS AUTO
Manual gives slower inspection.
Auto cycles hands-free.
Space moves colours in manual.
Click exits the output.
TROUBLESHOOTING
DOT MOVES?
If it moves when wiped, it is dust.
If it changes with viewing angle, it may be reflection.
Clean and retest slowly.
Use a microfiber cloth.
FULLSCREEN ISSUES
Browsers require a user click.
START works without fullscreen.
Try FULLSCREEN again after START.
ESC exits fullscreen.
DISPLAY SETTINGS & PRIVACY
DISPLAY SETTINGS
Disable night mode briefly.
Turn off blue-light filters.
Avoid extreme contrast modes.
Use native resolution.
PRIVACY
No files are loaded.
No data is uploaded.
The tool only changes display output.
Runs fully in the browser.
RELATED SCREEN TOOLS
COLOUR TESTS
PATTERN TESTS
PARENT LINKS & INDEXING
PARENT LINKS
INDEXING SUMMARY
Canonical URL: /dead-pixel-test/
Page purpose: dead pixel checker.
Previous: 766 Gradient Test.
Next: 768 Checkerboard Pattern.