Turn any screen into exactly what you need
ScreenBG is a free collection of fullscreen browser tools — color and dead-pixel screen tests, screen lights for video calls, animated wallpapers, realistic system and update screens, a fullscreen QR code generator, and big clocks and timers. No sign-up, nothing to install, and everything loads instantly.
Popular tools
White Screen
Fill your whole display with pure white in one click.
Dead Pixel Test
Cycle full-screen colors to find dead and stuck pixels fast.
Matrix Rain Screen
The classic falling green code rain, live and fullscreen.
Quotes Wallpaper
Rotating quotes over a live, customizable background.
Windows Update Screen
A convincing Windows-style update screen you fully control.
QR Screen
Generate a big, scannable fullscreen QR code instantly.
Clock
A giant, clean fullscreen clock in digital, analog, or flip.
Countdown Timer
A big fullscreen countdown for events, tasks, and workouts.
Display & Light Tools
Solid color screens, or turn your display into a soft light source.
White Screen
Fill your whole display with pure white in one click.
Black Screen
Turn your whole display solid black in one click.
Red Screen
Fill the display with solid red to test color and pixels.
Green Screen
Fill the display with solid green for color and pixel checks.
Blue Screen
Fill the display with solid blue for color and pixel checks.
Gradient Background
A still, fullscreen color gradient from curated palettes.
Zoom Light
Use your screen as an adjustable key light for video calls.
Selfie Light
A bright, adjustable fullscreen light for selfies and makeup.
Warm Light
A soft, warm fullscreen light that's easy on the eyes.
Cool Light
A crisp, cool daylight fullscreen light for focus and photos.
Animated Wallpapers
Live fullscreen backgrounds for ambience and focus.
Matrix Rain Screen
The classic falling green code rain, live and fullscreen.
Gradient Wallpaper
Smooth, slowly shifting animated color gradients.
Particle Wallpaper
Floating, connecting dots for a clean sci-fi ambience.
Coding Screen
Auto-typing code that looks like a busy programmer at work.
Ambient Dark Screen
A slow, breathing dark glow for a relaxed ambience.
Fire Screen
A realistic animated flame for a cozy fireplace feel.
Rain Screen
Calming animated rainfall for focus and sleep.
Snowfall Screen
Gentle drifting snowflakes for a wintry, festive mood.
Data Stream
Fly forward through 3D streams of code, numbers, and data.
Space Travel
Fly through space at warp speed past streaking stars.
Quotes Wallpaper
Rotating quotes over a live, customizable background.
System & Simulation
Realistic, fully controllable system & status screens.
Windows Update Screen
A convincing Windows-style update screen you fully control.
macOS Update Screen
A clean macOS-style install screen you fully control.
Server Down Screen
A clean 'down for maintenance' status screen.
Loading Screen
A minimal fullscreen loading screen you control.
No Signal Screen
A retro TV 'No Signal' and color-bars screen.
QR Tools
Generate fullscreen QR codes anyone can scan.
Clocks & Timers
Big, beautiful fullscreen clocks and timers.
Screen Tests
Find dead pixels and check backlight & color uniformity.
Why ScreenBG?
Instant & lightweight
Static pages and minimal JavaScript mean tools open in well under a second — no loaders, no waiting.
Fullscreen-first
Every tool goes edge-to-edge with one click, with clean controls that get out of your way.
Customizable & private
Tweak text, color, theme and speed. Your preferences are saved locally — no account required.