SEO Auditor is a powerful Chrome Extension that performs instant, full on-page SEO audits directly inside your browser. It analyzes meta tags, headings, images, links, indexing signals, accessibility, structured data, and more — all client-side, privacy-first, and fully open-source.

• ✅ llms.txt checker for LLM SEO / LEO / AI SEO Improvements
• ✅ llms-full.txt checker for LLM SEO / LEO / AI SEO Improvements
• ✅ Meta tag audits (title, description, canonical, robots, Open Graph, Twitter, JSON-LD, viewport, charset, language, favicon)
• ✅ Headings structure audit (H1–H6 with hierarchy)
• ✅ Image audits (alt attributes, srcset, missing tags)
• ✅ Link audits (internal, external, nofollow, empty anchor text, short text)
• ✅ Indexability checks (robots.txt, sitemap.xml, sitemap inclusion)
• ✅ Accessibility checks (lang attribute, headings, image alt)
• ✅ Word count, character count, thin content detection
• ✅ Technical SEO signals (structured data, charset, viewport, Open Graph completeness)
• ✅ Color-coded audit scores, helpful suggestions, official documentation links
• ✅ Clean Lighthouse-style interface with full drilldowns
• ✅ Fully client-side, no servers, no tracking, no data collection
• ✅ Chrome Manifest v3 compliant

├── extension
│ ├── background.js
│ ├── content.js
│ ├── icons
│ │ ├── icon128.png
│ │ ├── icon16.png
│ │ └── icon48.png
│ ├── manifest.json
│ ├── popup.html
│ └── popup.js
├── LICENSE
├── README.md

• All extension source files are stored inside the /extension folder.
• seo-auditor-extension.zip is the ready-to-upload package for Chrome Web Store submission.
• Makefile includes optional helper tasks for packaging.

1. Clone this repository.
2. Open chrome://extensions/ in your Chrome browser.
3. Enable Developer mode.
4. Click Load unpacked and select the /extension folder.
5. The extension will be loaded for testing and development.

• 100% client-side execution
• No tracking, no analytics, no data collection
• No external servers involved
• Fully GDPR & CCPA compliant

This project is fully open-source and community-driven.

• GitHub: https://github.com/plainsignal/seo-auditor

Contributions, bug reports and feature suggestions are welcome.

This project is licensed under the Apache 2.0 License.

Developed by PlainSignal.