OpenSEO Labs
Free, open-source SEO tools built for the community.
Audit, analyze, and optimize your websites with zero cost.
OpenSEO Labs provides a comprehensive suite of SEO analysis tools including website audits, page-level meta tag inspection, heading structure validation, image alt attribute checking, keyword density analysis, broken link detection, redirect chain tracing, robots.txt validation, sitemap verification, canonical URL checks, performance monitoring, Core Web Vitals assessment, domain intelligence, and AI-powered content recommendations — all completely free and open source.
All Tools
Everything you need to analyze and improve your SEO. From technical audits and content analysis to performance monitoring and domain intelligence.
SEO Audit
Comprehensive website and page audits with actionable SEO scores.
AI Analytics
Leverage AI for intelligent SEO analysis and smart recommendations.
Links & Status
Check HTTP status, redirects, and find broken or orphaned links.
Crawl & Index
Analyze robots.txt, sitemaps, canonicals, and indexability.
Performance
Measure PageSpeed, Core Web Vitals, and performance metrics.
On-Page SEO
Analyze meta tags, headings, images, keywords, and schema markup.
Domain
Lookup domain info, age, authority metrics, and SEO scores.
Resources
Guides, documentation, and learning resources for SEO mastery.