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SEOquake vs Sitechecker: catalog facts
SEOquake	Sitechecker
Free The extension is a free download; the linked web checker allows three free checks a day.	Freemium The single-page SEO checker is free; crawling, monitoring and rank tracking are paid…
Web, Browser extension	Web, Browser extension
On-page SEO audit directly in the browser Internal link inspection and URL comparison	Free page audit with a score, status code and indexation status Crawler, monitoring and rank tracking in the same platform
Homepage now redirects to a Backlinko page that promotes Semrush Deeper site-wide audits are pushed toward paid Semrush tools	Most features beyond the single-page checker are paid Aimed at marketers, so reports focus on SEO rather than general site health
Web application, Browser extension	Web application, Browser extension
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Needs internet
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.