Pure OLED Black Canvas · 0% Luminance

Full Black Screen Tool

Open a distraction-free, 100% full black screen in fullscreen. Ideal for inspecting backlight bleeding, dust cleaning, OLED power saving, and multi-monitor blackout.

Click to Launch Fullscreen TestPress F for Fullscreen • Space to Pause • R to Record
Active Mode:Pure Black (#000000)
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True OLED Black

Emits 0.000 nits on self-lit OLED and AMOLED panels, shutting off individual subpixels for infinite contrast ratio.

Backlight Bleed Detection

Instantly spot yellow IPS glow, edge light leakage, and cloudy pressure spots in a darkened room.

Dual Monitor Blackout

Blank secondary displays while streaming, watching movies, or editing without turning off the physical power button.

Why Use an Online Full Black Screen?

A full black screen is one of the most versatile calibration and utility tools for PC monitors, laptops, MacBooks, tablets, and mobile phones. When displayed in borderless fullscreen mode (press F), every pixel is set to RGB(0, 0, 0), creating a uniform zero-luminance background.

Top Practical Uses:

  • Dust & Fingerprint Cleaning: Solid black creates a mirror-like contrast against bright room lights, making every smudge, dried droplet, and speck of dust instantly visible on your display glass.
  • IPS Glow & Backlight Bleeding Inspection: Testing monitors for warranty RMA returns by viewing a pitch black screen in a dark environment.
  • OLED Burn-in & Retention Relief: Provides total pixel rest for OLED phosphors and allows dark background thermal equalization.
  • Eye Strain Reduction & Deep Focus: Use as a neutral workspace backdrop while taking phone calls or listening to focus audio.

Download 4K Black Screen Wallpaper

Export pure black test images and wallpapers in exact native resolutions (3840×2160 4K UHD, 2560×1440 2K QHD, 1920×1080 FHD, and Mobile formats).

Precision Color Matrix

Solid Color Palette & Custom Shade Generator

Select from standardized screen calibration shades or generate custom RGB/Kelvin values for panel analysis, photography backdrops, and ambient lighting.

Primary & Secondary Calibration

Grayscale & Shadow Steps

Color Temperature & Lighting Presets

Custom Shade & Kelvin Studio

Kelvin Temperature2700 K
1000K (Candle)6500K (Daylight)12000K (Blue Sky)
RGB:rgb(0, 0, 0)
HSL:hsl(0, 0%, 0%)
Real-Time Hardware Inspector

Live Display & Monitor Diagnostics

Accurate hardware data detected directly from your connected display, GPU pipeline, and browser window.

Screen Resolution
-- × --
Usable: -- × --
Pixel Ratio (DPR)
--
Standard Display
Color Depth & Gamut
24-bit
sRGB Gamut
Estimated Refresh Rate
60Hz / FPS
SDR Standard Range