Link juice is the ranking power passed through backlinks. Bryan Collins explains what link juice is, how it flows through websites, and how to maximize it for SEO.
Link juice — also called link equity — is the ranking authority that passes from one page to another through hyperlinks. It’s the mechanism behind why backlinks from high-authority websites improve your rankings: they literally transfer some of their authority to your page.
After 30 years in SEO, understanding how link juice flows is essential for both building backlinks and structuring your internal links effectively. Here’s the complete explanation.
What Link Juice Is (and Isn’t)
“Link juice” is an informal term. Google’s official term is PageRank — a mathematical algorithm invented by Google co-founder Larry Page that measures the importance of a webpage based on the quantity and quality of links pointing to it.
The core principle: Links are votes of confidence. When Page A links to Page B, it’s passing some of its authority to Page B. The more authoritative Page A is, the more valuable that vote.
What link juice is NOT:
- It’s not a fixed quantity — it can flow in unlimited amounts through backlinks
- It’s not visible or directly measurable by third parties (Google keeps actual PageRank internal)
- It’s not the only ranking factor — relevance, content quality, and user signals also matter
How Link Juice Flows
From External Backlinks
When an authoritative external website links to one of your pages, it passes link equity to that specific page. This is the primary source of authority for most websites.
The quality principle: Link juice from a single link on a high-authority website (a major newspaper, industry association, or authoritative directory) is worth more than dozens of links from low-authority sites.
The relevance principle: Links from topically relevant sources pass more value than random off-topic links. A roofing company getting a link from a construction industry publication is more valuable than a link from an unrelated site.
Through Your Internal Links
Once authority enters your site through backlinks, it flows through your internal links. Every page on your site distributes its link juice among the pages it links to.
Example:
- Your homepage has many backlinks → high PageRank
- Homepage links to 5 service pages (among other links)
- Each service page receives a share of the homepage’s authority
This is why internal linking strategy matters: you can deliberately route link juice from your most authoritative pages to the pages you most want to rank.
The Division Principle
Link juice is divided among all followed outbound links on a page:
- A page with 5 outbound links passes ~20% of its juice per link
- A page with 50 outbound links passes ~2% of its juice per link
Pages with fewer outbound links pass more value per link. This is why having dozens of irrelevant outgoing links on your most authoritative pages wastes link equity.
How Nofollow Affects Link Juice
Links with the rel="nofollow" attribute do not pass link juice:
<a href="https://example.com" rel="nofollow">Link</a>
Google treats nofollow links as hints that it may choose not to follow for PageRank purposes. In practice, nofollow links don’t contribute to the target page’s ranking authority.
Common sources of nofollow links:
- Most forum and blog comment links
- Most user-generated content links
- Many social media links (Twitter/X, Facebook)
- Sponsored/paid links (required by Google to be nofollow or sponsored)
- Wikipedia links
The nuance: Nofollow links can still provide:
- Referral traffic (people clicking them)
- Brand mentions that influence other authority signals
- Indexing discovery (Google may still crawl them)
But they don’t improve PageRank the way followed links do.
Maximizing Link Juice Distribution
Internal Linking from Your Strongest Pages
Your homepage typically has more backlinks pointing to it than any other page. That makes it your highest-authority page — and a prime source of link juice for other pages.
Actionable tactic: Add contextual internal links from your homepage and your most popular blog posts to service pages you want to rank. Use descriptive anchor text (e.g., “our plumbing repair service” rather than “click here”).
Fix Broken Internal Links
Broken internal links (pointing to 404 pages) waste link equity — the juice flows to a dead end. Run a Screaming Frog crawl to identify broken internal links and redirect them to the correct page.
Consolidate Thin and Duplicate Pages
Multiple thin pages about the same topic split authority between them. Consolidating them into one comprehensive page with 301 redirects from the eliminated URLs concentrates link equity.
301 Redirects Preserve Link Juice
When you change a URL, a 301 redirect passes the existing link equity from the old URL to the new one. Without the 301, any backlinks pointing to the old URL stop contributing to your authority.
Link Juice and Your Backlink Strategy
When building backlinks, the goal is to earn links from pages with:
- High authority (the linking page itself has strong PageRank)
- Relevance (the linking page is topically related to yours)
- Few outbound links (pages that link to fewer sites pass more juice per link)
- Followed links (not nofollow)
Getting a followed, contextual link from a high-authority, topically relevant page with few outbound links is the highest-value backlink possible.
Frequently Asked Questions
What is link juice in SEO? Link juice (also called link equity) is the ranking authority that passes from one page to another through hyperlinks. When a high-authority page links to your page, it transfers some of its authority to you — increasing your page’s ranking potential. The term is informal; Google’s official term for this concept is PageRank.
How does link juice flow through a website? Link juice flows from linking page to linked page through every followed hyperlink. A page’s total link juice is determined by the authority it receives from external backlinks plus internal links. That juice is then divided among all the pages it links to. Pages with many outbound links pass less juice per link than pages with few outbound links.
Do nofollow links pass link juice? No — links with the rel=‘nofollow’ attribute do not pass link equity. Google treats nofollow links as hints and typically doesn’t follow them for PageRank purposes. Nofollow links can still provide referral traffic and brand mentions, but they don’t contribute to the target page’s ranking authority the way followed (dofollow) links do.
What is the difference between internal and external link juice? External link juice comes from backlinks from other domains — this is the primary source of authority for most pages. Internal link juice comes from other pages on your own site — this distributes existing authority across your pages. Both matter: external links bring authority into your site, and internal links distribute that authority to the pages that need it most.
How can I maximize link juice to my important pages? Strategies: add internal links from your highest-authority pages (homepage, popular articles) to your target service pages; minimize unnecessary outbound links on important pages; fix broken internal links that waste link equity; consolidate thin or duplicate pages with 301 redirects to concentrate authority; and earn external backlinks specifically pointing to your target pages.
Does 301 redirect pass link juice? Yes — Google has confirmed that 301 redirects pass the same link equity as direct links. If a page with 20 backlinks is redirected to a new URL, those backlinks’ link juice transfers to the new URL. This is why 301 redirects are essential when changing URLs — without them, backlinks pointing to the old URL stop passing link equity.
Does the number of links on a page affect link juice? Yes — link juice is divided among all followed outbound links on a page. A page with 10 followed outbound links passes roughly 1/10 of its equity to each. A page with 100 links passes 1/100 to each. Reducing unnecessary outbound links from your high-authority pages can increase the equity passed to each remaining linked page.
Bryan Collins is an SEO consultant based in Piscataway, NJ, with 30+ years of experience helping small businesses grow through content and search. He is a U.S. Marine Corps veteran and the author of Why Your Website Isn’t Ringing.