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seo

Audit website SEO for crawlability, indexability, on-page, and structured data issues.

26|2|Updated Jan 14, 2026
Search Tags:#audit#lighthouse#seo#structured-data#crawlability#indexability#pagespeed
One-click install
npx skills add https://github.com/howells/arc --skill seo-howells
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: seo
Source: https://github.com/howells/arc/tree/main/skills/seo
Command: npx skills add https://github.com/howells/arc --skill seo-howells

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Deep SEO audits identify gaps across crawlability, indexability, on-page optimization, structured data, social previews, and technical foundations, helping teams fix issues before they impact search visibility.

Core Features & Use Cases

  • Crawlability & Indexability: Detect robots.txt, sitemaps, canonical issues, and hreflang inconsistencies to ensure search engines can discover and index pages correctly.
  • On-page & Metadata Quality: Validate titles, meta descriptions, headings, alt text, and URL structures to improve relevance and click-through.
  • Structured Data & Social Preview: Check JSON-LD/schema markup and Open Graph/Twitter Card data to enable rich results and compelling previews.
  • Live URL Analysis (optional): Run Lighthouse and PageSpeed against a live URL and fold results into the report for real-world performance context.
  • Actionable Plans: Generate severity-graded findings and optional /arc:detail plans for larger improvements.

Quick Start

Use the seo skill to run a comprehensive audit on your project. Provide an optional live URL to include Lighthouse results; then review the generated report and fix quick wins or generate an implementation plan.

Frequently Asked Questions about seo

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I run a deep SEO audit to find crawlability and indexability issues?▼

A deep SEO audit detects robots.txt, sitemap, canonical, and hreflang inconsistencies to ensure search engines can discover and index pages correctly. Running this audit identifies gaps across technical foundations before they impact search visibility.

What's the best way to validate structured data and social preview markup?▼

Validating structured data involves checking JSON-LD/schema markup and Open Graph/Twitter Card data to enable rich results. An SEO audit evaluates this markup to ensure compelling social previews and correct search engine interpretation.

Can I use Lighthouse and PageSpeed to analyze a live URL for SEO performance?▼

Yes, you can run Lighthouse and PageSpeed against a live URL to fold real-world performance context into the SEO report. Live URL analysis provides actionable metrics directly alongside crawlability and on-page findings.

How do I check on-page metadata quality like titles and headings for SEO?▼

Checking on-page metadata quality validates titles, meta descriptions, headings, alt text, and URL structures to improve relevance and click-through. An SEO audit automatically reviews these elements to highlight optimization gaps.

Does this SEO audit provide actionable fixes or just report errors?▼

The SEO audit provides severity-graded findings with direct fixes and optional implementation plans for larger projects. This ensures teams receive actionable steps prioritized by impact, not just a list of errors.

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