Watchlight Documentation

Watchlight is a visual regression testing tool for desktop apps and games.

It helps you launch your real executable, capture snapshots at deterministic moments, and compare visual changes over time.

What you can do

• Configure reusable project and scene settings
• Capture snapshots by delay or stdout pattern
• Compare snapshots with configurable visual diff thresholds
• Run checks headless in CI with machine-readable JSON output

Start here

• Follow Quick Start to run your first snapshot flow
• Use CLI & Headless for automation and CI
• Use Integration Guide for scene design and command-line strategy