Click to Enter Fullscreen Test
Check for dead pixels, bright spots and dark spots
White•#FFFFFF
Press F for Fullscreen
Screen
DesktopResolution
1920 × 1080
DPR
1x
Depth
24-bit
Refresh
~60 Hz
Color Picker
White
#FFFFFFShortcuts
Color
← →
Fullscreen
F
Exit
Esc
TV users can use remote arrow keys
Custom Color
Free Online Screentest for Monitors
No download needed. Use white monitor solids, RGB colors, and color bars / TV test patterns to spot dead pixels, tint, flicker, and uniformity issues.
Pixel-Level Dead Pixel Detection
Cycle through primary colors and pure white/black to uncover stuck subpixels, dead pixels, and tint shifts.
Color & Greyscale Analysis
Multi-step neutral grays reveal backlight bleed, corner vignetting, and dirty screen effect (DSE).
Fast & Private No Uploads
100% executes within local browser memory without transmitting any telemetry, supporting TVs and desktop displays.