Link ranking factors

Link ranking factors are characteristics of inbound links that Google uses to determine site positions: donor authority, anchor text, topical relevance, and profile diversity.

In brief

Link ranking factors are the set of characteristics of external links (donor PageRank, anchor text, topical relevance, page type, nofollow/dofollow, link age) that influence the acceptor site's positions in search results.

What are link ranking factors

Link ranking factors are characteristics of inbound links that search algorithms use to evaluate the authority of a page and site. Since PageRank was introduced, links have remained one of Google's primary signals.

Modern algorithms consider not just the quantity of links but dozens of their characteristics: donor authority, topical relevance, link position on the page, profile diversity, age, and acquisition rate. Manipulating individual factors without considering the overall profile leads to filters.

Google has officially confirmed that links are one of the three main ranking factors, alongside content and RankBrain.

Key link ranking factors

Donor authority
PageRank, DR (Ahrefs), DA (Moz) of the donor page. A link from an authoritative resource passes more link equity.
Topical relevance
The donor's topic should match or overlap with the acceptor's topic. A link from a niche-relevant site is more valuable than one from an unrelated resource.
Position on page
Links in the main content (editorial links) are significantly more valuable than links in footers, sidebars, or widgets.
nofollow / dofollow
Links without a rel=nofollow attribute pass link equity. nofollow is a hint to Google, not a hard rule.
Donor uniqueness
Links from new unique domains are more valuable than additional links from a domain that already links to you.
Link age
Older, stable links pass more authority than new ones — this indirectly reflects a natural link profile.

Anchor factor

Anchor text is one of the most important link factors. Google uses it to understand the topic of the acceptor page. However, an excess of links with exact-match keyword anchors (exact match anchor) is one of the main Penguin filter triggers.

Anchor typeShare in profileRisk
Branded (company name)30–50%Minimal
URL anchor (naked URL)20–30%Minimal
Generic ('here', 'learn more')10–20%Minimal
Partial keyword match5–15%Low
Exact keyword match1–5%High if overused

Quality vs. quantity

A single high-quality backlink from an authoritative niche resource can deliver more impact than a hundred links from directories or link farms. Google's algorithms have become significantly better at determining the 'value' of a specific link within the context of the entire profile.

Mass-purchasing low-quality links to inflate volume is a direct path to penalties. Donor quality matters more than quantity.

How to improve link ranking factors

  • Earn links from topically relevant, authoritative resources
  • Diversify your anchor profile: branded, URL, generic, topical
  • Aim for link placement in main content rather than footers
  • Build links from new unique domains, not repeatedly from the same ones
  • Monitor acquisition rate (link velocity) — steady growth looks natural
  • Use the Disavow tool to reject toxic links

Common questions

Google doesn't disclose the exact number. Based on patents and public statements from Google employees, the algorithm considers dozens of link and profile characteristics, including temporal acquisition patterns.
Both matter. A link from an irrelevant site with high DR may have less impact than a link from a topically relevant mid-authority resource. Ideally, you want both high DR and topical relevance.
Since 2019, Google treats nofollow as a 'hint' rather than a hard rule — it may count nofollow links in ranking decisions. But dofollow links pass the primary link equity.
Footer, sidebar, and navigation links pass less equity than editorial in-content links. Google has long been able to identify 'architectural' links and reduce their influence.
It depends on donor authority and crawl frequency. Links from frequently crawled authoritative resources can affect positions within days. Links from low-authority sites may take weeks or months.
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