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SEOptimer vs Sitechecker: catalog facts
SEOptimer	Sitechecker
Freemium Free single audits; white-label reports and the full toolset need a paid plan with free…	Freemium The single-page SEO checker is free; crawling, monitoring and rank tracking are paid…
Web	Web, Browser extension
Instant audit from a single URL Prioritised, plain-language recommendations	Free page audit with a score, status code and indexation status Crawler, monitoring and rank tracking in the same platform
Report branding and deeper features are paid Scores are a summary rather than a full crawl	Most features beyond the single-page checker are paid Aimed at marketers, so reports focus on SEO rather than general site health
Web application	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
Needs internet	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.