Greenflare is a lightweight, free, and open-source SEO web crawler dedicated to delivering high-quality SEO insights and analysis solutions. It is scalable and tested against sites with 4M+ URLs.

Greenflare provides reports on on-page SEO elements including page titles, meta robots, and canonical tags, analyzes HTTP header responses like X-Robots-Tag and Canonical HTTP Header, reports status codes (301, 404, 503, etc.), and enables custom data extraction through XPath or CSS. Users can exclude URLs through various patterns and quickly filter and sort crawl data. The tool also identifies broken internal links. Greenflare was created by developer Benjamin Görler of Germany and represents an accessible open-source alternative to commercial SEO crawlers.
Lightweight free and open-source SEO web crawler for Linux, Mac, and Windows
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