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Multi-page Lighthouse SEO audit

Runs Lighthouse performance and SEO audits across every page of a site, locally, without a PageSpeed API quota.

Source Download skill
Repository
AgriciDaniel/claude-seo
Stars
25,798
Licence
MIT
Files
1 file

What it does

Once installed, the agent can crawl a website's pages (up to a configurable limit, default 200) and run Lighthouse on each one, using the open-source Unlighthouse tool on your own machine. It then summarizes the results as median scores for performance, accessibility, best practices and SEO, with a per-page breakdown and a JSON and HTML report. This is useful for checking a whole site for speed and quality problems instead of testing one URL at a time.

Great for

  • SEO or web performance specialists auditing large sites that exceed Google PageSpeed Insights' free daily quota
  • Developers who want a site-wide Lighthouse regression check after a deploy or in CI
  • Teams that need local Core Web Vitals measurement in restricted environments

Skip it if

  • Single-URL field data from real users; the skill's own guidance points to a different PageSpeed/CrUX skill for that
  • Auditing sites you do not own or have permission to test, since it crawls every discovered route and can put load on the server
  • Environments where you cannot install Node 18+ or run local scripts

Try asking

  • “Run a mobile Lighthouse audit across my site at https://example.com, capped at 50 pages”
  • “Audit the desktop performance of every route on my staging site and save the reports to ./reports”
  • “Give me median performance and SEO scores across all pages of this site after today's deploy”
Step-by-step guide: how to use Multi-page Lighthouse SEO auditInstall, first run, examples, tips and FAQs

Install in 3 steps

  1. 1

    Download the skill

    The ZIP contains the 1 original files, the MIT licence and an attribution note.

    seo-unlighthouse.zip
  2. 2

    Add it to your agent

    Claude Code (all projects)

    mkdir -p ~/.claude/skills && unzip seo-unlighthouse.zip -d ~/.claude/skills/

    Claude Code / Agent SDK (this project only)

    mkdir -p .claude/skills && unzip seo-unlighthouse.zip -d .claude/skills/

    Claude apps (web/desktop): Settings → Capabilities → Skills → Upload skill, and choose the ZIP.

  3. 3

    Ask for the task

    No special command needed — the agent reads the skill's description and loads it when your request matches. Try one of the prompts above.

Get better results

  • Set --max-routes to a modest number on first runs so you know how long a full crawl will take and how much load it puts on the site.
  • Use --output-dir to keep reports for comparison between deploys, since the default is a temporary directory.
  • Only point it at sites you own or are authorized to test, and run it against staging when possible.

What's inside

  • SKILL.md

Redistributed unmodified from AgriciDaniel/claude-seo under the MIT licence. The assessment was drafted with AI from the skill's files on 2026-10-29. Skills can instruct your agent to run code — read SKILL.md and any scripts before installing.