What are backlinks?

Backlinks are links from one website that point to another. They act as signals to search engines that the content being linked to is credible and valuable. High-quality backlinks from relevant, authoritative sources can boost a site’s visibility and rankings. However, not all backlinks provide equal value, as links from unrelated or spammy sites may be ignored or harmful. Because they function like endorsements across the internet, backlinks remain one of the most influential off-page SEO factors, helping search engines evaluate authority and relevance.