Backlink
Definition
A backlink is a hyperlink from one website to another. Also called an inbound link, it acts as a vote of confidence from the linking site. Search engines treat backlinks as one of the strongest ranking signals.
Why It Matters for SEO
Pages with more high-quality backlinks tend to rank higher. Building backlinks from authoritative, topically relevant sites is a core part of off-page SEO strategy.
See it in action
Try the KWDens analyzer to explore keyword density across variants, countries, and languages. Free to start.