SEO glossary

Backlink

Definition

A backlink is a link from another website to yours. Search engines treat it as a vote — one site vouching for another — and links remain one of the signals Google uses to decide which page ranks. Relevance and editorial intent decide a link's worth: ten links from your own sector beat two hundred from directories.

Updated 26 July 2026 · Written by the Last Agency team · See what SEO actually costs

The short version

  • Links still count. Less than they did in 2015, and far less than content that answers the query — but no serious ranking model ignores them.
  • Relevance beats volume, and it isn't close. One link from a site your buyers read beats fifty from unrelated blogs.
  • The useful unit is referring domains, not backlinks. One site linking you a hundred times is one vote.
  • There's no magic number for a new Indian site. Count the referring domains of the pages already ranking, and aim for that order of magnitude.

Related questions.

Are backlinks still important for SEO in 2026?

Yes, though less than a decade ago. On long-tail and low-competition queries, content and technical health decide the result. On competitive commercial terms, where several sites have equally good pages, links are often the tiebreaker. Treat them as the last lever, not the first.

What are the main types of backlinks?

Editorial links, given because someone cited you; paid placements, which Google's policy treats as link schemes unless marked rel=sponsored; directory and citation links, which help local visibility more than rankings; and user-generated links from forums and comments, which are usually nofollowed. Only the first is reliably worth chasing.

How many backlinks do I need to rank?

Nobody can answer that in the abstract, and anyone who does is selling a package. Check the referring domain counts of the pages currently ranking for your target query and aim for the same order of magnitude. The gap between you and them is your actual brief.

Can bad backlinks hurt my site?

Far less often than tools imply. Google ignores most junk links automatically, and disavowing is warranted mainly after a manual action or a known history of bought links. Toxicity scores are vendor opinions, not Google's — check [toxic backlinks](/glossary/toxic-backlinks) before you disavow anything.

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