Claude Code can now run a Lighthouse audit on your website, fix what's slow, then prove it with a new score.
Add Google's official Chrome DevTools MCP:
claude mcp add chrome-devtools --scope user npx chrome-devtools-mcp
@latest
Then open Claude Code in your site's folder and paste:
"Open [URL] in Chrome. Run a Lighthouse audit and a performance trace.
List the 5 biggest problems by impact, with the evidence for each.
Fix them in this codebase one at a time.
Run the audit again and show me the scores before and after."
It also reads network requests and console errors, and takes screenshots and memory snapshots.
Google collects usage statistics by default. Add --no-usage-statistics to opt out.