Professional red screen tool with adjustable brightness and full screen mode. Perfect for display testing, ambient lighting, photography, and special effects.
Quick Start: Click "Full Screen" below to start using the red screen tool. Use the brightness controls to adjust the intensity. Press 'F' for fullscreen or 'Esc' to exit.
Color: #FF0000
Perfect for testing, photography, and ambient lighting
Perfect for testing, backgrounds, and visual effects
Test your screen's red color accuracy, brightness uniformity, and detect dead pixels or backlight issues.
Use as a red light source for photography, creating dramatic lighting effects or testing camera color response.
Create red ambient lighting for relaxation, gaming setups, or mood lighting in dark environments.
Perfect for video production, streaming backgrounds, or creating dramatic visual effects and presentations.
Use maximum brightness to test for backlight bleeding. Look for uneven color distribution or dead pixels.
Position screen at 45-degree angle for dramatic side lighting. Adjust brightness for desired intensity.
Red light preserves night vision better than other colors. Use low brightness for astronomy or night activities.
Pure red (#FF0000) is ideal for testing color gamut and display calibration accuracy.