How to read PageRank-style authority scores in SEO software
PageRank SEO software helps you estimate link-based authority now that Google no longer publishes a public PageRank score, using crawl data and third-party page or domain authority metrics instead. The software is a decision aid, not a live view of Google's internal ranking system.
What PageRank is and where the original algorithm came from
PageRank is a link-analysis algorithm that scores a page as important when many important pages link to it, with each outbound link passing a share of the source page's score; this is the original PageRank basis described by Brin and Page and summarized by Wikipedia's PageRank entry. Google's own ranking-systems guide says PageRank was one of its core ranking systems when Google launched and continues to be part of its core ranking systems, though how it works has evolved. Google stopped publishing PageRank publicly in 2016, when the public Toolbar PageRank display was retired; Seobility notes that PageRank is no longer made visible to the public. The PageRank algorithm remains relevant as a way to reason about links even though no public Google PageRank number is available.
How modern SEO software estimates or substitutes for PageRank
Modern SEO software estimates or substitutes for PageRank with vendor-defined page authority and domain authority scores, because Google does not expose a public PageRank value; Seobility describes such tools as providing alternatives to the PR score previously provided by Google. These scores are not Google PageRank: they are predictions built from the vendor's crawl, link graph, spam filters, and scoring model, so two tools can give different numbers for the same URL. A page authority score usually estimates the strength of one URL, while a domain authority score rolls link signals up to a whole site. The useful question is not which score is the real PageRank but whether the tool's crawl and scoring method match the links you are trying to understand.
How ranking and backlink tools crawl and score link data
A ranking or backlink tool calculates link data in a repeatable sequence: discover URLs from seeds, sitemaps, user submissions, and historical crawls; fetch pages and parse outbound links, redirects, canonical tags, and nofollow/sponsored/ugc attributes; deduplicate links into a source-target graph and store anchor text, placement, and first/last-seen dates; compute page scores from inbound link contributions and domain scores by aggregating page signals; and refresh the index and rescore on a schedule. The exact crawl scope and scoring formula are vendor-specific, so the output should be read as that vendor's estimate rather than as Google's internal PageRank.
Sample output from a ranking and backlink tool
A sample output from a ranking or backlink tool should show the source URL, target URL, anchor text, link status, source page authority, and the tool's resulting authority score; without those fields the output cannot be checked. Sample output (template, not a live result): Source URL [exported source]; Target URL [exported target]; Anchor [exported anchor]; Link type [follow/nofollow/sponsored/ugc]; Source page authority [tool score]; Target page authority [tool score]. A real screenshot from The Ranking Store's Backlink Factory or another tool is needed to show the actual interface and confirm the score column; a template alone is not evidence of a live result.
Worked example of a backlink profile and resulting score
Worked example of a backlink profile and resulting score: take a target page P and two inbound links from pages A and B, with exported rows for Source URL, Target URL, source page score PR(A), source outbound-link count L(A), and link status. Wikipedia's PageRank entry gives the original contribution from one link as the source page's own PageRank divided by its number of outbound links, so the resulting score can be written as PR(P) = (1 – d) + d × (PR(A)/L(A) + PR(B)/L(B)), where d is the damping factor. A truthful numeric worked example needs the actual exported values for A, B, and P and the tool's scoring formula; inventing a backlink profile and a score would be misleading, so The Ranking Store should publish a real Backlink Factory export with the resulting score when one is available.
PageRank compared with third-party authority scores
PageRank and third-party authority scores measure related but different things: PageRank was Google's own link-based importance score, while page authority and domain authority are vendor estimates built for SEO work. Comparison table: Metric | What it measures | Who publishes it | Public availability; PageRank | Google's link-based importance score | Google | No public score since 2016; Page authority | Predicted strength of one URL | SEO software vendor | Vendor-only score; Domain authority | Predicted strength of a whole site | SEO software vendor | Vendor-only score; Trust or spam score | Manipulation or quality estimate | SEO software vendor | Vendor-only score. PageRank is not interchangeable with any third-party authority score, and a vendor score should be read as a relative signal within that vendor's index rather than as a Google ranking factor.
Factors that influence link-based ranking signals
Factors that influence link-based ranking signals include the authority of the linking page, topical relevance between the linking and target pages, anchor text, link placement in main content versus boilerplate, follow/nofollow/sponsored/ugc status, the number of outbound links on the source page, link freshness, diversity of linking domains, redirects, and signs of manipulation. Wikipedia notes that PageRank can be vulnerable to manipulation and that research has focused on ignoring links from falsely influenced documents. A software score is only as useful as the link data it crawls, so missing redirects, hidden sponsored links, or a small crawl can distort the estimate.
Practical application through The Ranking Store
The Ranking Store's Backlink Factory (https://therankingstore.com/backlink-factory/) is the practical application for backlink work described here, and Our Softwares (https://therankingstore.com/our-softwares/) lists related tools including Ranking Factory Revolution v2. A reader comparing authority scores can use those product pages to connect the metric discussion to The Ranking Store's own software lineup.
Common questions
Is PageRank still used by Google?
Google's ranking-systems guide says PageRank was one of its core ranking systems when Google launched and continues to be part of its core ranking systems. What changed is public visibility: Google stopped publishing a public PageRank score in 2016, so SEO software now estimates link authority with its own metrics. The PageRank algorithm remains a useful mental model even without a public number.
Why does PageRank SEO software show a different authority score from another tool?
Tools estimate authority from their own crawls and scoring models, not from a live Google PageRank feed. Differences in crawl coverage, link deduplication, spam filtering, and how domain scores are aggregated produce different numbers for the same page. Compare scores within one tool over time rather than treating them as interchangeable.
What should a backlink profile export include to make a score believable?
A believable export should list each source URL, target URL, anchor text, link status, source outbound-link count, and the tool's resulting page or domain score. The original PageRank-style contribution from one source is that source page's score divided by its outbound-link count, so those fields are needed to check the arithmetic. Without the raw rows and the tool's formula, the score cannot be audited.
Can a high third-party authority score guarantee better rankings?
No third-party authority score is a Google ranking factor, and Wikipedia notes that PageRank can be vulnerable to manipulation. A high vendor score is a relative estimate of link strength, not a guarantee of rankings, because Google uses many other signals. Use the score to prioritize link opportunities and then judge results by search performance.
References
- A Guide to Google Search Ranking Systems | Google Search Central | Documentation | Google for Developers — Google for Developers
- PageRank – Wikipedia — Wikipedia
- What is PageRank? – Seobility Wiki — Seobility
Sources and supporting material
Further reading:
- Reference: Vps for SEO software
- Reference: Page rank SEO software comparison
- Reference: Page rank SEO software comparison and benchmark
- Reference: Choosing software to track search rankings
- Approach article: website ranking software
- Approach article: vps for seo software
- Approach article: site ranking software
- Reference: Backlink building software