Online Pixel Tools

A tool that cycles the user's full screen through solid colors (Red, Green, Blue, White, Black) to help them spot stuck or dead pixels.

Instantly tells the user their current viewport size and their physical screen resolution (handling the device pixel ratio).

Displays a completely black screen with max brightness instructions to help users check for light leaking around the edges of their monitor.

A simple animation that counts frames to estimate if the screen is running at 60Hz, 120Hz, or 144Hz.

Users input resolution (e.g., 1920x1080) and screen diagonal size (e.g., 24 inches) to calculate the pixel density. Critical for determining if a display is "Retina" quality.

Multiplies Width x Height and divides by 1 million. Useful for photographers understanding camera sensors vs. output size.

Calculates the ratio (e.g., 16:9, 21:9) from pixel dimensions, or calculates the missing dimension if the ratio is locked.

Converts pixel dimensions to physical print size (Inches or CM) based on a target DPI (usually 300 for print, 72 for web).