Visual Regression Tester

Overview

Detect unintended visual changes in UI components by capturing screenshots and comparing them pixel-by-pixel against approved baselines. Supports Playwright visual comparisons, Percy, Chromatic, BackstopJS, and reg-suit.

Prerequisites

• Browser automation tool installed (Playwright, Puppeteer, or Cypress)
• Visual regression library configured (Playwright toHaveScreenshot, Percy, Chromatic, or BackstopJS)
• Baseline screenshots committed to version control or stored in a cloud service
• Storybook or component playground running for isolated component captures (optional)
• Consistent rendering environment (Docker or CI with fixed OS/fonts/GPU settings)

Instructions