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Sitechecker vs Detailed SEO Extension: catalog facts
Sitechecker	Detailed SEO Extension
Freemium The single-page SEO checker is free; crawling, monitoring and rank tracking are paid…	Free Free, with no paid tier according to the developer.
Web, Browser extension	Browser extension
Free page audit with a score, status code and indexation status Crawler, monitoring and rank tracking in the same platform	Heading structure shown at a glance Checks X-Robots headers as well as meta tags
Most features beyond the single-page checker are paid Aimed at marketers, so reports focus on SEO rather than general site health	Closed source Page-level insights only, not a full site crawl
Web application, Browser extension	Browser extension
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.