Link juice is a colloquial term for the SEO authority, technically rooted in Google's PageRank algorithm, that is transferred from one web page to another through a hyperlink. When a high-authority page links to your page, it passes some of its ranking power to you. That transferred authority, informally called link juice, raises the linked page's ability to rank in search results for relevant queries.
The concept originates from Google's foundational insight that links are votes: a page that many other pages link to must be valuable. PageRank quantified this by assigning each page a score based on the quantity and quality of inbound links, with each page distributing a share of its own PageRank to the pages it links to. While Google's current ranking algorithm is far more complex than the original PageRank formula, the principle that authoritative links increase a page's ranking potential remains central to how search works.
Understanding link juice is essential context for link building strategy, internal linking architecture, and the overall management of your site's authority distribution. It also provides important background for understanding why domain authority metrics, while not Google's own metrics, serve as useful proxies for the link equity accumulated across a domain.
How Link Juice Flows Through a Website
Link juice flows from linking page to linked page through followed hyperlinks. The amount transferred depends on two variables: the authority of the linking page and the number of outbound links on that page. A page with high authority that links to only three other pages passes more juice per link than a page with moderate authority that links to fifty pages. This is why editorial links from focused, authoritative pages are more valuable than directory listings that link to thousands of sites.
Internal links distribute link juice between your own pages. When your homepage, typically your highest-authority page, links internally to a product page or a key resource, it passes some of its authority to that page. This is why internal linking architecture is a meaningful technical SEO lever: by controlling which pages your high-authority pages link to, you control where authority concentrates within your site. Pages that receive more internal links from authoritative pages will rank better than equivalent pages that receive fewer links.
The nofollow attribute on a link tells search engines not to pass link juice through it. Sponsored links and user-generated links should use nofollow (or the more specific "sponsored" and "ugc" rel values). Over-using nofollow on your own internal links is a common mistake that disrupts authority flow and weakens pages you intend to rank. Regular internal link audits ensure that your authority flows to the pages that matter most for your SEO goals.
Link Juice in an AI-Driven Search Landscape
Link juice remains a meaningful SEO concept because Google continues to use link signals as authority indicators. However, the relationship between link authority and AI visibility is more indirect. AI retrieval systems like those powering Perplexity or Google AI Overviews do not necessarily follow the same link-based authority signals that determine Google organic rankings. They weight source credibility, content quality, and topic authority through different mechanisms.
That said, high link equity and high AI citation rates are correlated outcomes rather than coincidental ones. Brands that have earned substantial link juice have typically done so by producing high-quality, authoritative content that others find worth linking to. That same content quality is what makes a page worth citing in AI-generated answers. The inputs are similar even if the mechanisms differ.
Building genuine link equity through editorial coverage, thought leadership content, and industry partnerships therefore serves both traditional SEO and AI visibility goals simultaneously. For a comprehensive view of how authority building connects to your overall digital presence, see our complete AI visibility guide and request a free audit to understand where your link profile stands.