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Built for Claude

Lighthouse JSON Reports for Claude

Export a complete Lighthouse JSON report and feed it to Claude for deep analysis. Claude excels at understanding performance audit data and producing detailed, accurate code-level fixes.

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How to use Lighthouse JSON with Claude

  1. 1

    Run a Lighthouse audit on your URL using PageSpeed Exporter

  2. 2

    Click "Download JSON" to export the complete AI-ready report

  3. 3

    Open Claude.ai and start a new conversation

  4. 4

    Use the file upload button to attach the JSON report

  5. 5

    Paste the prompt template below and send

  6. 6

    Claude will cross-reference audits, weights, and CrUX data for a complete picture

Ready-to-use prompt for Claude

Copy this prompt, attach your JSON report, and send it to Claude:

I'm sharing my complete Lighthouse JSON performance report for [your-site.com].

Please do a thorough analysis:
1. What is my LCP element and why is it rendering slowly?
2. Which 3 issues will have the greatest impact on my Core Web Vitals if fixed?
3. For each issue, provide the exact diff (before/after code) needed to fix it
4. Are there any stack-specific hints in the stackPacks field I should know about?
5. How does my lab data compare to my real-user CrUX field data?

Also works with

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