SEO glossary

Backlink

A link from another website to yours. Search engines treat relevant backlinks from trusted sites as a signal of authority.

Backlinks remain one of the strongest ranking signals, but quality matters far more than quantity: one link from a respected site in your field can outweigh hundreds from unrelated directories.

Learn how to check backlinks for free.

Related tools

Domain Authority CheckerCheck the authority of any domain for free: a 0 to 100 score based on its global Tranco ranking and Open PageRank, plus domain age.

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