What is Link Juice and How Does It Flow?
Link juice sounds like SEO jargon — but it describes something very real that determines which pages on your site rank and which ones don’t.
This guide explains exactly what link juice is, how it flows through your website, and how to direct it toward the pages that matter most.
What Is Link Juice?
Link juice is an informal SEO term for the link equity — the ranking power — that passes from one page to another through hyperlinks. When a high-authority page links to your page, it shares a portion of its ranking power with you. That transfer of authority is what SEOs call link juice.
The concept comes from Google’s original PageRank algorithm, which treated every link as a vote. Pages with more votes from powerful sources ranked higher. Link juice is the substance of those votes flowing through the web.
The technical term: Link equity or PageRank flow. Link juice is the informal name the SEO community uses to describe the same concept.
A simple analogy: Think of link juice like water flowing through pipes. High-authority pages are like large tanks — full of water (authority). When they link to another page, they open a pipe and water flows through. The receiving page fills up with authority. If that page then links to other pages, the water continues flowing outward — but in smaller amounts each time it divides.
Where Does Link Juice Come From?
Link juice originates from two sources:
1. External backlinks — the primary source: When a website with strong Domain Authority links to your page, it injects external link juice into your site. This is new authority entering your domain from the outside. Every quality backlink you earn brings fresh link juice into your site that did not exist before.
The more authoritative the linking site, the more juice it passes. A backlink from a DA 80 news site injects significantly more authority than a backlink from a DA 20 blog.
2. Internal links — the distribution network: Internal links move juice around within your own site. They do not create new juice — they redistribute what already exists. Pages with strong external backlinks have accumulated juice, and internal links carry that juice to other pages on your domain.
This is why your internal linking structure is so important. A page buried deep in your site with no internal links pointing to it may have excellent content — but without juice reaching it, it struggles to rank.
How Link Juice Flows — Step by Step
Understanding the flow helps you make strategic decisions about both external link building and internal linking.
Step 1 — External juice enters through backlinks: A DA 65 website publishes an article and links to your homepage. A large amount of link juice flows into your homepage from that external link. Your homepage now has more authority than it did before.
Step 2 — Juice distributes through internal links: Your homepage links to 8 other pages via navigation menus and body links. The juice your homepage received divides among all 8 outbound links. Each linked page receives roughly 1/8 of the juice the homepage can pass.
Step 3 — Juice flows further down the chain: Each of those 8 pages links to additional pages. The juice divides again at each linking point. Pages deeper in the site receive less juice because it has been divided multiple times by the time it reaches them.
Step 4 — Juice accumulates on well-linked pages: A page that receives internal links from many high-juice pages accumulates authority from all of them. A blog post that your homepage, your category page, and three other strong articles all link to will have much higher Page Authority than an isolated post with zero internal links — even if both posts have identical external backlinks.
What Affects How Much Juice a Link Passes?
Not every link passes the same amount of juice. These factors determine how much flows through each link:
1. Authority of the Linking Page
The higher the Page Authority of the linking page, the more juice it has available to pass. A link from a PA 60 page passes more juice than a link from a PA 15 page — even on the same domain.
2. Number of Outbound Links on the Page
Link juice divides equally among all outbound links on a page. A page with 3 outbound links passes 3 times more juice per link than a page with 30 outbound links. This is why resource pages with hundreds of links pass relatively little juice per link, even if the page itself has strong authority.
The formula concept (simplified): Juice per link = Page’s total juice ÷ Number of outbound links
3. Dofollow vs Nofollow
Dofollow links pass juice. Nofollow links block juice from flowing through — the authority exists, but the link acts as a closed valve rather than an open pipe. This is why dofollow links from high-authority sites are more valuable than nofollow links from the same sites.
4. Link Placement on the Page
Google weights editorial links within the main body content higher than links in footers, sidebars, or navigation menus. Body links are surrounded by relevant context — they signal topical endorsement, not just structural navigation.
5. Anchor Text
While anchor text does not change the amount of juice flowing, it shapes how Google interprets the juice. Descriptive anchor text tells Google what the linked page is about, making the transferred authority more topically relevant and therefore more useful for ranking that page for specific keywords.
6. Link Depth from Homepage
Pages closer to the homepage tend to accumulate more juice naturally because they receive internal links from the homepage, category pages, and navigation menus. Pages buried 4 or 5 clicks from the homepage receive little residual juice unless you deliberately link to them from stronger pages.
Link Juice and Page Authority — The Direct Connection
Page Authority (PA) is essentially a measure of how much link juice a specific page has accumulated. The more juice a page receives — from external backlinks and internal links combined — the higher its PA score.
This connection has a direct practical implication:
You can improve a page’s PA without getting new backlinks — just by improving how link juice reaches it internally.
If you have a blog post you want to rank better, and you add internal links to it from your 5 strongest pages (your homepage, your most-linked articles), the juice flowing to that post increases immediately. Moz typically reflects this in updated PA scores within 4 to 8 weeks.
This is why smart SEOs audit their internal linking regularly. Moving juice from pages that have it to pages that need it is free, fast, and fully within your control.
Does Link Juice Disappear?
Link juice does not disappear — it redistributes. But there are situations where juice gets blocked or wasted:
Nofollow internal links If you accidentally or deliberately add rel="nofollow" to internal links, juice stops flowing through those links. The authority exists on the linking page but cannot reach the destination.
Broken internal links (404 errors): When an internal link points to a page that no longer exists, the juice that should have flowed to that page is wasted. It does not go anywhere — it just stops. This is why fixing broken internal links is an easy win for recovering lost juice.
Orphan pages: Pages with no internal links pointing to them receive no internal juice. Even if they have external backlinks, they are missing the boost they would get from your site’s existing authority. Finding and adding internal links to orphan pages is one of the fastest ways to improve their performance.
Pages blocked by robots.txt or noindex: Pages you have blocked from indexing cannot pass juice forward effectively. Be careful not to block important intermediate pages that act as juice distribution hubs.
Too many outbound links on one page: A page with 200 outbound links passes a tiny fraction of juice per link. High link density dilutes the value of each individual link — which is why keeping your link counts reasonable matters.
How to Maximize Link Juice on Your Site
Strategy 1 — Identify your highest juice pages: Use a free authority checker to find pages on your site with the highest Page Authority scores. These pages have the most juice to share. Every internal link from these pages to a target page is a juice transfer opportunity.
Your homepage is almost always your highest juice page. Navigation links from your homepage carry more authority than links buried in article footers.
Strategy 2 — Build topic clusters: The topic cluster model is designed around juice flow. A pillar page receives links from many cluster pages — concentrating juice. The pillar page then links back out to cluster pages — distributing juice. Every cluster page links to the pillar — reinforcing its authority. The entire cluster benefits from juice circulating through its interconnected structure.
Strategy 3 — Link from your strongest articles to your target pages: When you publish a new page you want to rank, go back to your 3 to 5 strongest existing articles and add contextual internal links to the new page. This immediately sends juice from your most authoritative pages to the new page — giving it an authority head start.
Strategy 4 — Fix broken internal links: Run a free broken link checker on your site quarterly. Every broken internal link is a juice leak — authority that should be flowing to a page but isn’t. Fixing broken links recovers that lost juice and redirects it properly.
Strategy 5 — Reduce link clutter on key pages: If a page that could be passing strong juice is linking to 50 different pages, each link carries less value. Trimming unnecessary links from high-authority pages concentrates juice on the links that remain.
Strategy 6 — Shorten link depth for important pages: Count how many clicks it takes to reach your most important pages from the homepage. If any key page requires more than 3 clicks, add links to it from shallower pages. Less depth = more juice reaching it from your strongest authority sources.
Link Juice Flow — Visual Example
Here is how juice flows through a simple website structure:
Homepage (PA 45) — receives links from 20 external domains
│
├── Category Page (PA 32) — linked from homepage
│ ├── Blog Post A (PA 28) — linked from category + homepage
│ └── Blog Post B (PA 12) — linked only from category
│
└── About Page (PA 20) — linked from homepage only
└── Contact Page (PA 8) — linked only from About pageObservations from this structure:
- Blog Post A has higher PA than Blog Post B because it receives juice from both the homepage AND the category page — two sources vs one
- Contact Page has the lowest PA because it receives juice from only one intermediate page (About), which itself has limited authority
- A simple fix: add a link to Blog Post B from the homepage or from Blog Post A — its PA would rise noticeably in Moz’s next update
External Link Juice vs Internal Link Juice
| External Juice | Internal Juice | |
|---|---|---|
| Source | Backlinks from other websites | Internal links within your site |
| Creates new authority? | Yes — new equity enters your domain | No — redistributes existing equity |
| How to increase it | Earn more quality backlinks | Improve internal linking structure |
| Speed of impact | Weeks to months (depends on crawling) | 4 to 8 weeks for Moz PA updates |
| Cost | Requires outreach and content effort | Free — just editing your own pages |
| Limits | Depends on other sites linking to you | Fully in your control |
The most powerful SEO strategy combines both: earn external juice through link building, then distribute it efficiently through smart internal linking.
Frequently Asked Questions (FAQ)
What is link juice in SEO?
Link juice is the informal term for link equity — the ranking authority that passes from one page to another through hyperlinks. When a high-authority page links to your page, it shares a portion of its authority with you. This transferred authority improves your Page Authority and helps your page rank higher in search results.
How does link juice flow through a website?
Link juice enters your site through external backlinks from other websites. It then flows through internal links to other pages on your site. Each time a page links out to multiple pages, the juice divides among all linked pages. Pages that receive internal links from many high-juice pages accumulate more authority than isolated pages with few internal links.
Do nofollow links pass link juice?
No — nofollow links act as a closed valve that blocks juice from flowing through. The authority exists on the linking page but does not transfer to the destination page. Dofollow links pass juice; nofollow links do not (with rare exceptions Google may make using nofollow as a hint rather than a hard rule).
Does every outbound link reduce the juice I pass?
Yes. Link juice divides equally among all outbound links on a page. A page with 5 outbound links passes more juice per link than a page with 50 outbound links. This is why keeping outbound link counts reasonable on your most important pages helps maximize the juice value of each individual link.
Can I improve Page Authority without getting new backlinks?
Yes. Improving how internal link juice flows to a page can increase its Page Authority without any new external backlinks. Adding internal links from your homepage or high-PA articles to a target page sends it existing juice that was not reaching it before. Moz typically reflects these PA improvements within 4 to 8 weeks.
What happens to link juice when a page has a 404 error?
When an internal link points to a 404 error page, the juice that would have flowed through that link is wasted — it stops at the broken link and goes nowhere. Fixing broken internal links (either by restoring the destination page or updating the link to a working URL) recovers this lost juice and routes it properly.
Does link juice flow through redirects?
Yes, but with some loss. A 301 (permanent) redirect passes most of the original page’s link juice to the new destination — Google has confirmed that 301 redirects pass “full” PageRank, though some SEOs observe a small reduction. A 302 (temporary) redirect passes less juice. Redirect chains (multiple redirects in sequence) cause progressively more juice loss at each step.
How many internal links should I add to a page to boost its juice?
More is not always better. Each additional internal link pointing to a page adds juice, but quality of the source matters more than quantity. Three internal links from your homepage and strongest articles deliver more juice than thirty links from thin, low-authority pages. Focus on linking from your highest-PA pages rather than adding links everywhere.
What is PageRank and how does it relate to link juice?
PageRank is Google’s original algorithm for measuring page-level authority based on the quantity and quality of links pointing to a page. Link juice is the informal term the SEO community uses to describe PageRank flow — the equity that moves between pages through links. Google no longer publishes public PageRank scores, but the underlying concept remains central to how Google evaluates and ranks pages. Moz’s Page Authority (PA) is a third-party approximation of the same concept.
