Make your screen
work for you.
Open a clean color screen, inspect your display, or put a little motion on your monitor. Simple tools that run right in your browser.
Screen color tools
Choose a solid color for lighting, simple visual checks or a clean background.
Black Screen
Open a pure black screen for display checks, dark backgrounds and low-light use.
White Screen
Use a clean white screen for lighting, dust checks and display inspection.
Red Screen
Show a solid red screen for color and pixel inspection.
Green Screen
Display a solid green screen for color checks and chroma-key previews.
Blue Screen
Use a blue field to inspect color uniformity across your display.
Yellow Screen
A bright yellow field for simple display and color checks.
Orange Screen
Display a vivid orange field on your monitor or phone.
Pink Screen
A solid pink screen for color inspection and creative use.
Purple Screen
Inspect your display with a solid purple field.
Gray Screen
Use neutral gray to inspect uniformity and visible marks.
Custom Color Screen
Choose any color and display it in a distraction-free screen.
Screen & monitor tests
Use color fields and gradients to look for visible display irregularities.
Dead Pixel Test
Cycle through solid colors to help spot pixels that look different from their neighbors.
Stuck Pixel Test
Use changing color fields to inspect pixels that remain one color.
Monitor Test
Check basic colors, grayscale and visible display uniformity.
Brightness Test
Compare dark and light fields while adjusting your display brightness.
Contrast Test
View light, dark and mid-tone patterns to inspect contrast visibility.
Gradient Test
Display a smooth grayscale gradient to inspect visible banding.
Backlight Test
Show a dark field to help inspect uneven illumination in a dim room.
Color Cycle Test
Cycle primary and secondary colors to inspect your display.
These browser tests can help you notice visible differences, but they cannot confirm every hardware fault. Clean your screen only according to the device maker's instructions.
Screensavers & utilities
Simple fullscreen experiences for a spare display, desk or break.
Screen Cleaner
Turn the display into a solid field while you clean the powered-on screen carefully.
Fullscreen Clock
A large digital clock for presentations, desks and shared displays.
Countdown Timer
Set a simple on-screen countdown for focus sessions or activities.
Matrix Screensaver
Run a green falling-character animation in your browser.
Starfield Screensaver
Watch a simple animated starfield move across your screen.
DVD Logo Screensaver
Watch a bouncing logo move around a fullscreen canvas.
Hacker Typer
Type keys to reveal fictional terminal-style code for fun.
No Signal Screen
Show a simulated no-signal display for presentations or harmless pranks.
Focus Screen
Open a calm, minimal screen to reduce visual distractions.
White Noise
Generate simple browser-based white noise; adjust volume before starting.
Pomodoro Timer
Use a 25-minute focus timer with a short break reminder.
Minimal Clock
A large minimal clock for a second monitor or desk display.
How to use online screen tools
Screen tools display colors, patterns or simple animations directly in your browser. Open a tool, check the preview, then use its fullscreen button when you are ready. Press Escape to leave fullscreen mode in browsers that support it.
What a screen test can and cannot tell you
Solid colors and gradients make it easier to notice a pixel that looks different, uneven brightness or visible banding. Results depend on screen settings, ambient light and your viewing angle. A browser test is a useful first look, not a certified hardware diagnosis.
Use your display safely
Bright full-screen colors can be uncomfortable in a dark room. Lower brightness when needed, take breaks, and avoid staring at bright screens for long periods. For cleaning, follow your manufacturer's instructions and never spray liquid directly onto the display.
Frequently asked questions
Do these tools require a download?
No. The core tools run in a modern browser; some features require JavaScript.
Can a dead pixel test repair a pixel?
No. It only helps you inspect the display. It cannot guarantee a repair or diagnose the underlying cause.
How do I exit fullscreen?
Press Escape, or use the exit button shown by the browser if available.