Playwright Chrome Extension Testing (Headless)

This skill gives you the exact, battle-tested recipe to automatably load and test any Chrome extension (MV2 or MV3) with Playwright, including fully headless runs in CI.

Why Playwright?

• Best extension support in 2025/2026
• Clean fixtures for extension ID extraction
• Excellent tracing, auto-waiting, parallel execution
• Official headless mode that actually loads extensions

1. Project Setup (one-time)

npm init -y
npm install -D @playwright/test playwright
npx playwright install --with-deps chromium   # or use Chrome for Testing binary