A backlink (also called an inbound link or incoming link) is a hyperlink from one website to another. Backlinks are one of Google's most important ranking signals because they act as votes of confidence from other websites, indicating that your content is valuable and trustworthy.
Why Backlink matters for SEO
Sites with more high-quality backlinks from authoritative domains tend to rank higher. Backlinks from diverse, relevant sources build domain authority over time. Sites with 32,000+ referring domains are 3.5x more likely to be cited by ChatGPT.
Related terms
Link EquityBacklinks pass link equity (ranking power) from the linking site to yoursDomain AuthorityThe number and quality of backlinks is the primary factor in domain authorityReferring DomainA referring domain is a unique website that links to you; one domain can provide multiple backlinks
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Check backlink on your site
External Link CheckerAudit who a page links out to and on what terms. Destinations grouped by domain, with rel nofollow, sponsored and ugc, new-tab safety, and live status.Bulk Website Authority CheckerScore up to 50 domains for link authority in one run, with the median, spread and outliers reported for the whole set and a CSV to take away.Website Authority CheckerCheck the link authority of any website on a 0 to 10 scale, with its global rank and referring domain count, from the open Common Crawl link graph.
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