About Ahrefs
Ahrefs is an SEO toolset built on top of one of the largest backlink and keyword indexes available, with a web crawler that is among the most active on the internet. It is best known for its backlink analysis: Site Explorer reveals any domain's referring domains, anchor text, and link growth over time, which makes it a favorite for link building and competitor research. Keywords Explorer provides search volume, difficulty scores, and click metrics across multiple search engines, while Site Audit surfaces technical SEO problems. Rank Tracker monitors keyword positions across locations and devices, and Content Explorer helps find popular content and link prospects. Ahrefs is widely trusted by SEO professionals, agencies, and content teams who prioritize backlink data quality and competitive intelligence, and it offers a free, limited Webmaster Tools tier for verified site owners.
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