Link Equity Explained: How PageRank Flows Between Pages

Link equity is the industry's shorthand for the value a link is thought to pass from one page to another, and PageRank is the Google system that idea grew out of. This guide separates the academic model from what Google says today, then shows how to think about value on a single page, across your own site and through redirects, using a flow table you can apply to real decisions.

What Link Equity Means and Where PageRank Came From

PageRank began as research at Stanford University in the late 1990s, developed by Larry Page and Sergey Brin before Google became a company. The core insight was that the web's link structure holds information: a link from one page to another works like a vote. Votes are not equal, though. A link from a page that many important pages reference counts for more than one from a page nobody points to.

The original paper explained this with a "random surfer" who clicks links at random and occasionally jumps somewhere unrelated. The likelihood of that imaginary visitor landing on a page serves as an estimate of the page's importance. Link equity talk today applies the same intuition, so it helps to keep two layers apart:

• The historical PageRank algorithm: the published model you can read about and reason with.
• Google's current implementation: a system that has changed considerably and whose details are not public.

Popular explanations of "the PageRank algorithm" describe the first layer; this guide uses them only to build intuition; anything said about present-day Google comes from Google's own documentation.

What Is Known About PageRank Today

Two opposite claims circulate: that PageRank is long dead, and that it is all that matters. Neither matches the documentation. Google's guide to its search ranking systems (Opens in a new tab) says Google has various systems that understand how pages link to each other as a way to determine what pages are about. It names PageRank as one of the core ranking systems used when Google first launched, notes that how it works has evolved a lot since then, and confirms it continues to be part of the core ranking systems.

What you can rely on:

• Links are one of the ways Google works out what a page is about and how pages relate.
• An evolved PageRank is still part of Google's core ranking systems.
• Today's version is not the one described in the original paper.

What remains unknown:

• The current formula, its parameters and the weight any individual link receives.
• How PageRank combines with Google's many other signals.
• Any outside method for calculating how much a single link moved a ranking.

Treat precise figures you come across, such as a set percentage lost through a redirect or a maximum number of links per page, as speculation unless Google published them.

Link Equity as an Industry Term

"Link juice" and "link equity" are industry terms, not Google terminology. Search Console has no link equity score, and no third-party tool can measure what a link really passes. The phrases survive because the metaphor is useful: links behave like a network of channels in which value can pool, spread thin or drain away through a broken connection.

Taken literally, though, the metaphor misleads. Three corrections keep it honest:

1. It is not a unit. You cannot total the "juice" on a page or move a measured amount between URLs.
2. Source quality comes first. Two links that look identical in a spreadsheet can mean very different things depending on the relevance and trustworthiness of the linking page.
3. Links are one input among many. Content quality, query match and page experience still matter.

Flow diagrams treat every link as the same kind of water, yet whether a link helps depends first on where it comes from. Before thinking about passing link value between your own pages, it pays to know the signals that separate a strong backlink from a weak one.

How the Number of Links on a Page Matters

In the original model, a page divided its value among all of its outgoing links, which gave rise to the rule of thumb that each extra link shrinks every other link's share. As a description of the historical model, that holds. Google has not published how its current system divides value, or how it treats navigation and footer links compared with links in the main content.

Given that uncertainty, the reader is a better guide than any number. When reviewing an important page, ask:

• Does this link help a reader take a sensible next step?
• Are there several links to the same destination, and does each earn its place?
• Is the link in the main content or in a template repeated sitewide?
• Are the links that matter easy to spot, or buried among dozens of others?

A page with hundreds of links makes the important ones hard to find, and if the historical model still applies in part, each share gets smaller. Stripping out useful citations and related guides to "save" equity is the wrong fix, though. The aim is a page where every link has a reason to exist.

Directing Value to Key Pages with Internal Links

External links cluster on a handful of URLs: the home page, a widely cited guide, a piece of original research. Product and service pages seldom attract links on their own. Internal link equity is about closing that gap with contextual links from your strongest pages to closely related priority pages.

1. Pull your most linked-to pages from a backlink tool or the Links report in Search Console.
2. List the priority pages you want to strengthen and the topic each covers.
3. Pair strong pages with priority pages only where a genuine topical connection exists.
4. Place the link in the body copy with anchor text that describes the destination.
5. Check how many clicks each priority page sits from the home page and remove needless depth.

One habit to drop is putting nofollow on your own internal links to hold equity on certain pages. Google's documentation on qualifying outbound links points to a robots.txt disallow rule, not nofollow, when you want to stop Google fetching a URL on your own site. For site architecture as a whole, see our guide to building an internal linking strategy that supports SEO.

The Role of Nofollow, Sponsored and UGC Attributes

When to use each attribute is covered in our side-by-side comparison of dofollow, nofollow, sponsored and UGC links, so this section only looks at how attributes relate to the flow of value.

Google's 2019 Search Central post on evolving nofollow (Opens in a new tab) explains that sponsored, ugc and nofollow are treated as hints about which links to consider or exclude within Search, and that they work as hints for ranking purposes. It adds that nofollow would become a hint for crawling and indexing as of March 1, 2020, and that there is no need to change nofollow links you already have.

For anyone weighing nofollow and PageRank, neither absolute statement holds:

• "Nofollow links pass nothing" is inaccurate, because Google evaluates the attribute as a hint.
• "Nofollow links pass value anyway" is inaccurate too, because Google does not say when or how far that happens.
• Paid links leave no room for interpretation: Google's link spam policy (Opens in a new tab) expects them to carry rel="sponsored" or rel="nofollow".

Consolidating Value with Redirects and Canonicals

When the same content lives at several URLs, its links are split between them. Google's documentation on consolidating duplicate URLs says rel="canonical" helps search engines combine the signals held for individual URLs, such as links to them, into one preferred URL. It lists redirects and rel="canonical" as strong canonicalization signals and sitemap inclusion as a weak one.

Redirect type matters as well. Google's redirects documentation says permanent redirects (301 and 308) are used as a signal that the target should be canonical, while temporary redirects (302 and 307) are not. That does not mean a temporary redirect passes nothing; it sends a different message about which URL should represent the content.

• Use a permanent redirect when content has moved for good, pointing to the closest equivalent page.
• Collapse chains so old URLs go straight to the final destination.
• Update internal links to the final URL instead of leaning on the redirect.
• Make canonicals, redirects and sitemap entries agree.

Planning a domain change or URL restructure? Our walkthrough on keeping backlink value intact through a site migration turns these principles into a checklist.

Sitewide Links vs Contextual Links

A sitewide link sits in a template area such as the footer, sidebar or menu and repeats on every page. A contextual link appears inside an article as part of a sentence about a related subject. They differ in three ways:

• Relevance: a contextual link sits beside text on the same subject; a template link is usually unrelated to the page around it.
• Editorial intent: a contextual link reflects a decision about one article, while one sitewide decision multiplies across every URL.
• Risk: Google's link spam policy lists widely distributed links in site footers or templates among its examples of links meant to manipulate rankings.

Not every sitewide link is a problem; links between sister publications can be entirely natural. Once money changes hands, the attribute rule applies to footers as much as anywhere else. We weigh the trade-offs in our comparison of sitewide footer links and single-page links and explain how relevance is built in our guide to why link context matters.

Toolbar PageRank and Third-Party Authority Metrics

For years the most watched number in SEO was the 0 to 10 PageRank score in the Google Toolbar. That public score stopped being updated and was eventually withdrawn. There is no official way to see a page's PageRank today, and Search Console does not report one.

Third-party metrics filled the gap. Moz's Domain Authority and Ahrefs' Domain Rating are calculated by those companies from their own crawl data and methods. They are handy for comparing link profiles, but none is Google's PageRank or a window into Google's internal data.

1. Know which tool produced a score; scores from different tools are not interchangeable.
2. Read the number alongside topical relevance, real traffic and content quality.
3. Do not treat short-term score movements as ranking changes, since tools revise their models.

On publisher lists, the deciding question is still whether the page hosting your link fits your subject and has readers.

Practical Rules for Preserving Link Equity

You cannot steer link equity with a formula, but you can prevent most of the ways it leaks. Run these checks on a regular schedule:

• Removed pages: redirect retired linked-to pages permanently to the closest equivalent, not the home page or an unrelated URL.
• Redirect chains: point legacy URLs straight at the final address.
• Stale internal links: menus, footers and body links should reference final URLs.
• Orphan pages: give every important page at least one contextual internal link.
• Canonical conflicts: duplicates should share one canonical that agrees with your redirects.
• Paid placements: qualify any link you buy or sell with rel="sponsored" or rel="nofollow".
• Lost links: check that external links are still live and ask publishers to fix links to the wrong URL.

Sample Template: Link Equity Flow Table

This sample template brings common link situations into one table: how to think about value, the documented basis for that view and the check to run. Every row rests on public documentation, and none claims a percentage or a fixed outcome.

Imagine a project management software company whose "remote team onboarding checklist" has picked up links from HR blogs and newsletters. During a redesign the checklist moved behind a temporary redirect, then moved again, creating a two-step chain. It never linked to the company's onboarding template page, and a paid footer credit carried no attribute.

Working through the table produces four actions: a single permanent redirect to the final URL, menu and body links updated to that address, two contextual links from the checklist to the onboarding template page, and rel="sponsored" on the paid footer link. The point of this invented example: managing link equity is mostly about clearing obstacles in front of links you have already earned.

Frequently Asked Questions

Does Google still use PageRank?

Yes. Google's guide to its ranking systems describes PageRank as one of the core ranking systems used when Google first launched, says it has evolved a lot since then and confirms that it continues to be part of the core ranking systems. The current formula and weightings are not public.

Can I see my PageRank score?

No. The 0 to 10 score once shown in the Google Toolbar is no longer available, and Search Console does not report PageRank. Authority scores from third-party tools are those companies' own estimates, not Google's PageRank.

Do nofollow links pass no value at all?

There is no absolute answer. In 2019 Google announced that nofollow, sponsored and ugc are treated as hints about which links to consider or exclude, so Google makes the final call. These links can still bring referral traffic and brand exposure.

Do too many links on a page split link equity?

In the original PageRank model, a page's value was divided among its outgoing links. Google has not explained how its current system handles this, so there is no documented link limit. Let readers be the guide: redundant links dilute attention and make the important ones harder to find.

Does a 301 redirect preserve link equity?

Google uses a permanent redirect as a signal that the target URL should be canonical, and its duplicate URL documentation says signals such as links can be consolidated on the preferred URL. Google has not published any figure for how much value transfers. Redirecting to the closest equivalent page and avoiding chains is the sound approach.

Is Domain Authority the same as PageRank?

No. Domain Authority is a third-party metric that Moz calculates from its own crawl data and methodology; it is not Google's PageRank and is not a Google ranking factor. It can be a handy first filter when comparing sites, but read it alongside relevance and content quality.

Conclusion and Next Step

PageRank began as an academic idea for turning links into a measure of importance, and Google's documentation confirms an evolved version is still part of its core ranking systems. Because the formula is not public, manage link equity through published principles: link internally to the pages that matter, keep redirects permanent and short, keep canonical signals consistent, treat attributes as hints and qualify every paid link with rel="sponsored".

Once your flow table is filled in and existing channels are repaired, you may want new sources. Put topical fit and audience match ahead of headline metrics when choosing publishers. You can compare options on our backlink packages page, then follow seller approval and delivery notifications during the order and log each new link in your table.