Monitor test tool for Linux, macOS and Windows

A simple fullscreen monitor testing tool written in Go using the Pixel library.
It provides several test screens for checking colors, gradients, dead pixels, motion clarity, and subpixel layouts.

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Available tests

• Red
  Solid red screen

• Green
  Solid green screen

• Blue
  Solid blue screen

• White
  Solid white screen

• Black
  Solid black screen

• Horizontal Gradient
  Black to white gradient (Shift+Up/Down to invert)

• Vertical Gradient
  Black to white gradient (Shift+Up/Down to invert)

• Small Checkerboard
  Black & white checkerboard with adjustable square size (Shift+Up/Down)

• Pixel Grid
  Grid overlay with adjustable cells size (Shift+Up/Down)

• Motion Balls
  Bouncing balls with background cycling (Up/Down: background, Shift+Up/Down: speed)

• Dead Pixel Recovery
  Flashes colors to exercise dead pixels (Shift+Up/Down to adjust speed)

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Requirements

• Go 1.18+
• Pixel library dependencies:
  • github.com/faiface/pixel
  • github.com/faiface/pixel/imdraw
  • golang.org/x/image

Build and Run

git clone https://github.com/keshon/screen-tester.git
cd screen-tester
go run .