Puppeteer Screenshot Diff Engine

Visual regression testing using Puppeteer page.screenshot() with pixelmatch comparison. Leverages CDP sessions via page.createCDPSession() for precise viewport emulation and network throttling.

Installation

Use the upstream install or setup path that matches your environment:

• npm i puppeteer # Downloads compatible Chrome during installation.
• npm i puppeteer-core # Alternatively, install as a library, without downloading Chrome.

Basic usage or getting-started notes:

• bash npm2yarn

• MCP

• a Puppeteer-based MCP server for browser automation and debugging.

• Source: https://github.com/puppeteer/puppeteer

• Extracted from upstream docs: https://raw.githubusercontent.com/puppeteer/puppeteer/HEAD/README.md

Documentation

• https://pptr.dev/

Source

• Agent Skill Exchange