SEOmator SEO Audit

Install

npm install -g @seomator/seo-audit

This is third-party code. Review the repository files before installing.

What it does

SEOmator checks a page or a whole site against rules grouped into categories: indexing, links and redirects, images, security headers, structured data, accessibility, content and mobile. Core Web Vitals and raw versus rendered DOM comparison use Chrome via Playwright. Reports go to console, JSON, HTML, Markdown or compact LLM-oriented XML, and every rule comes with a fix suggestion. Audits are stored in local SQLite and can be compared before and after a deploy. The seo-audit skill teaches the agent to run the tool and interpret the report.

Who it is for. For SEO specialists, marketers and developers who want to audit a site from the terminal, CI or straight from an agent.

Example request

Run an SEO audit on https://example.com with a 20-page crawl and tell me what to fix first

Limitations

Requires Node.js 20.3+, and Core Web Vitals and JavaScript rendering need Chrome or Chromium. The tool inspects page code and responses and has no search engine data. Checks it cannot measure are reported as not measured.

How to disable. Run npm uninstall -g @seomator/seo-audit and remove the seo-audit folder from the agent's skills directory. Audit history lives in ~/.seomator.

Security check

• Launches a browser and crawls the target site
• Stores audit history on disk

README in short

The README covers three forms of one tool: an npm CLI, an Electron desktop app and a Claude Code skill. It details the audit, crawl, analyze, report, compare and serve commands, seomator.toml configuration with presets and the output formats. It includes GitHub Actions and GitLab CI examples and programmatic usage. MIT licensed.

SKILL.md

---
name: seo-audit
description: Audit websites for SEO, technical, content, security, JS rendering, and AI readiness using SEOmator CLI. Returns LLM-optimized reports with health scores across 332 rules and 20 categories, and can diff two audits to show what a deploy changed. Use when analyzing websites, debugging SEO issues, checking site health, or comparing a site before and after a change.
license: MIT
compatibility: Requires Node.js 20.3+ and npm. Chrome/Chromium optional for Core Web Vitals and JS rendering.
metadata:
  author: seomator
  version: "5.0.0"
allowed-tools: Bash(seomator:*)
---

# SEO Audit Skill

Audit websites for SEO, technical, content, performance, security, JavaScript rendering, and AI readiness using the SEOmator CLI.

SEOmator provides comprehensive website auditing by analyzing website structure and content against **332 rules** across **20 categories**.

It provides a list of issues with severity levels, affected URLs, and actionable fix suggestions.

## Links

* SEOmator npm package: [npmjs.com/package/@seomator/seo-audit](https://www.npmjs.com/package/@seomator/seo-audit)
* GitHub repository: [github.com/seo-skills/seo-audit-skill](https://github.com/seo-skills/seo-audit-skill)
* Web UI: [seomator.com/free-seo-audit-tool](https://seomator.com/free-seo-audit-tool)

## What This Skill Does

This skill enables AI agents to audit websites for **332 rules** in **20 categories**, including:

- **Core SEO** (24 rules): Canonical URLs, indexing directives, title uniqueness, canonical conflicts/loops
- **Performance** (26 rules): LCP, CLS, FCP, TTFB, INP, compression, caching, minification, HTTP/2
- **Links** (24 rules): Broken links, redirect chains, anchor text, localhost/fragment links, plus click depth and inbound internal links from the site graph (`--crawl`)

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