Link Building UK
Proven strategies to earn quality backlinks that boost domain authority for UK websites.
Read guide🔗 Link Theory Deep Dive
What Is PageRank? The Foundation of Google's Authority System#
PageRank is the algorithm developed by Google co-founders Larry Page and Sergey Brin that assigns a numerical authority score to web pages based on the quantity and quality of backlinks pointing to them. Named after Larry Page, it was the foundational innovation that made Google dramatically better than competitor search engines at identifying the most authoritative pages on any topic.
While Google discontinued the public PageRank toolbar score in 2016, PageRank as an internal signal has never gone away — it remains one of the most significant components of Google's ranking algorithm. Every backlink you earn, every internal link you create, and every no-follow attribute you apply affects how PageRank flows through your website and which pages accumulate the most authority for ranking purposes. Third-party metrics like Ahrefs' URL Rating (UR) and Moz's Page Authority (PA) are attempts to estimate PageRank-equivalent scores from external data.
How Link Equity (PageRank) Flows: The Core Mechanics#
Inbound Links Pass Equity
When a page links to yours, it passes a fraction of its PageRank to your page. A page with PageRank 8 (hypothetically) passes more equity than a page with PageRank 2, all other factors equal. The more inbound links a linking page has received, the higher its own PageRank and the more equity it can transfer.
Equity Is Divided Across Outbound Links
When a page links to multiple pages, its PageRank is divided among all outbound links. A page with 2 outbound links passes approximately twice the equity per link as a page with 100 outbound links. This is why links from pages with few outbound links ("clean linkers") are more valuable per link than footer or blogroll links shared with hundreds of others.
No-Follow Links Don't Pass Equity
Links with rel="nofollow" (or rel="sponsored" / rel="ugc") do not pass PageRank to the linked page. Google treats nofollow as a hint (not a directive) since 2019, so it may still follow and index nofollow links — but equity transfer is effectively blocked. Social media links, Wikipedia citations, and press release links are typically nofollow.
Internal Links Also Transfer Equity
PageRank flows through internal links exactly as it does through external backlinks. This means strategically placing internal links from your highest-authority pages (usually your most-linked-to pages) to the pages you most want to rank is a controllable, zero-cost way to boost specific page rankings.
Equity Decays with Hops
Each link is one "hop" in the PageRank calculation. Equity diminishes slightly with each hop from the original linking page. A direct link from a high-authority external page passes more equity than the same equity flowing through 3 internal links. Keep important pages close to directly linked pages in your architecture.
Damping Factor
Google's PageRank formula includes a damping factor (approximately 0.85) representing the probability that a random web surfer continues clicking links rather than starting fresh. This is why the relationship between PageRank and ranking is non-linear — doubling your inbound links doesn't double your ranking power.
Internal Link Equity Optimisation: A Practical Framework#
You cannot control how much equity external pages pass — but you have complete control over how equity flows internally through your site. Strategic internal linking is therefore one of the highest-leverage, zero-cost SEO techniques available. Here's how to optimise internal equity flow:
1
Identify Your Highest-Authority Pages
Your highest-authority pages are those with the most and best-quality backlinks pointing to them. Find these using Google Search Console (Links report → Top linked pages) or Ahrefs (Site Explorer → Best by links). These are your "equity hubs" — pages that have accumulated the most external PageRank. Every internal link FROM these pages to target pages passes the maximum available internal equity.
2
Map Equity Flow to Priority Pages
Identify the pages you most want to rank for commercial purposes — product pages, service pages, key landing pages. Audit how many internal links from high-authority pages currently point to these priority pages. Any priority page with few or zero links from high-authority pages is missing out on available equity. Create a link equity map showing equity hub pages and their connections to priority targets.
3
Add Internal Links from Equity Hubs to Priority Pages
Within your highest-authority content, identify natural opportunities to add contextual internal links to your priority pages. A popular blog post with 200 inbound external links adding an internal link to your key service page passes meaningful equity. Use descriptive anchor text containing the target page's keyword — this both passes equity AND provides topical relevance signals.
4
Reduce Equity Dilution on Key Pages
Pages with 200+ outbound links (typically category pages or link-heavy resource pages) dilute the equity passed to any single outbound destination. For pages you want to concentrate equity on (homepage, pillar pages), minimise unnecessary outbound links. Each additional link reduces the share passed to all others. This doesn't mean hiding links — it means being selective about what's truly necessary on each page.
Do-Follow vs No-Follow Links: The Equity Implications#
| Link Type | Passes PageRank? | Common Use Cases | SEO Value |
|---|---|---|---|
| Do-follow | Yes — full equity | Editorial content, natural citations, guest posts | High — primary authority signal |
| rel="nofollow" | No (hint to ignore) | User-generated content, comment links, untrusted sources | Low for equity; some for traffic |
| rel="sponsored" | No | Paid placements, advertorials, paid reviews | Traffic only; required by Google for paid links |
| rel="ugc" | No | Forum posts, comment sections, user profiles | Traffic only; signals user-generated context |
| Internal do-follow | Yes — internal equity | Navigation, contextual body links, breadcrumbs | High — controllable equity distribution |
Link Equity and Site Architecture: The Flat vs Deep Debate#
Site architecture directly affects how efficiently PageRank distributes across your site. A "flat" architecture — where every page is reachable within 2–3 clicks from the homepage — means external equity flowing into your homepage distributes efficiently across all pages within a few hops. A "deep" architecture — where category pages sit 5–7 levels below the homepage — means pages at the bottom of the hierarchy receive heavily diluted equity after multiple damping-factor deductions.
For UK e-commerce sites with large product catalogues, this is particularly important. Product pages buried 6 levels deep (Homepage → Department → Category → Sub-category → Brand → Product) receive tiny fractions of the equity flowing into the homepage. Flattening the architecture to 3–4 levels maximum — or creating direct category-level backlinks to important sub-sections — dramatically improves the equity available to product pages that need to rank for competitive purchase-intent keywords.