Drop a single file into any codebase, run one prompt, and get a production-ready SEO audit across 24 pillars - from technical crawlability to semantic entity analysis to YouTube SEO. Every finding includes the exact fix.
| # | Pillar | Issue | Severity | Fix |
|---|---|---|---|---|
| 1 | On-Page | Missing title tag | Critical | Add <title> to <head> |
| 2 | Technical | No canonical on /blog/ | High | Add rel="canonical" |
| 3 | Performance | Images missing dimensions | High | Add w/h attributes |
| 4 | Schema | Missing VideoObject | Medium | Add JSON-LD block |
| 5 | Semantic | Keyword density <0.5% | Medium | Expand topical coverage |
Every check is context-aware - a portfolio site and an e-commerce store never receive the same audit. Pillars are weighted by project type.
The skill works in distinct passes, never combining steps. Each pass has a specific job, from workspace discovery to self-critique before delivery.
Every run generates a production-grade seo_audit_report.md and CSV export with the Priority Fix Matrix, per-pillar evaluations, revenue impact estimates, and copy-paste-ready fix blocks.
| # | Pillar | Issue | Severity | File | Effort | Traffic Impact | Fix Type |
|---|---|---|---|---|---|---|---|
| 1 | On-Page | Missing unique H1 tag | High | /about.html | S | +5-10% | metadata |
| 2 | Performance | Images missing dimensions | High | /index.html:45 | M | +3-8% | performance |
| 3 | Schema | Missing Product markup | Critical | /products/*.html | M | +8-15% | schema |
| 4 | Video | VideoObject schema missing | Medium | /watch/*.html | S | +2-5% | schema |
| 5 | Semantic | Entity coverage gap | Medium | /blog/*.html | L | +3-7% | content |
Most AI-generated SEO audits produce noise. This skill is designed to produce signal - every finding is defensible, prioritized, and includes the exact fix.
See how the 24-pillar audit framework was designed and why it outperforms traditional SEO auditing workflows.
From the F9XR Team - the engineers behind 24-pillar SEO auditing for static codebases.
Drop F9XR's SEO CodeBase Auditor SKILL into any project root, then run any of these prompts in Cursor, Copilot, Claude, or any AI chat interface. See the demo audit report for a sample output.
@SKILL.md Run a comprehensive full-stack SEO audit across all files in this workspace. Generate seo_audit_report.md and seo_audit_report.csv with all 24 pillars evaluated.
@SKILL.md Run a title tag and meta description optimization audit. Check every page for missing titles, short descriptions, and duplicate metadata.
@SKILL.md Run a Core Web Vitals audit across LCP, FCP, CLS, INP, and TTFB. Split findings by mobile vs desktop.
@SKILL.md Run a competitive SEO gap analysis against [competitor1.com, competitor2.com, competitor3.com]. Compare content depth, entity coverage, schema adoption, and keyword positioning.
@SKILL.md Run a Video & YouTube SEO audit. Catalog all video embeds, verify VideoObject schema, check embed best practices, and assess rich result eligibility.
@SKILL.md Run a migration SEO readiness check. Assume we are migrating from [old-domain] to [new-domain]. Flag all items that will break post-migration.
@SKILL.md Run an IndexNow readiness audit. Check if IndexNow key file exists, verify HTTP POST submission format, and provide the exact curl command.
Free SEO tools from our network to help you rank higher and grow online.
Watch how F9XR's SEO CodeBase Auditor SKILL delivers production-ready audits across 24 pillars.
Everything you need to know about F9XR's SEO CodeBase Auditor SKILL.
It's a single SKILL.md file you drop into any codebase root. When invoked with @SKILL.md in an AI coding assistant (Cursor, Copilot, Claude, etc.), it runs a comprehensive 24-pillar SEO audit and generates a production-ready report with exact fix blocks.
Any AI chat or coding assistant that supports file references works. That includes Cursor, GitHub Copilot, Claude, ChatGPT, and others. No plugins, extensions, or API keys required.
Each run produces seo_audit_report.md and seo_audit_report.csv containing: an executive summary, a Priority Fix Matrix capped at 20 items, granular per-pillar evaluations with current code and fix blocks, revenue impact estimates, and an effort rating for every finding.
Traditional tools crawl live URLs and check server responses. The SKILL audits your source code directly - before you deploy. It catches missing schema, broken metadata, performance anti-patterns, and accessibility issues at the code level, providing paste-and-deploy fix blocks instead of just diagnostic lists.
Yes. It's designed for static code repositories across any stack - HTML, React, Next.js, Vue, Nuxt, Astro, and more. The 24 pillars are context-aware: irrelevant checks are automatically suppressed (e.g., no JavaScript Framework SEO for plain HTML sites).
Completely free and open source. Download SKILL.md from GitHub, drop it in your project, and run. No subscriptions, no accounts, no tracking.
The pillars span four categories: Technical Foundation (On-Page, Technical SEO, Performance/CWV, URL Architecture, Mobile, Image SEO, XML Sitemap & Robots.txt), Content & Authority (Semantic SEO, Internal Linking, Blog SEO, E-E-A-T, Rich Results, AI/SGE/Voice), Platform & Process (E-Commerce, JavaScript Frameworks, CI/CD, Migration, Content Pruning, Third-Party Scripts), and Specialized (Social & Regional, Security, Accessibility, Competitor Analysis, Video & YouTube SEO, IndexNow Protocol).