Page Authority / SEO Terms Page Authority Page authority (PA) is a score developed by Moz that predicts how well a specific webpage is likely to rank in search engine results. It is measured on a scale from 1 to 100, with higher scores indicating a greater potential for ranking. Page authority is calculated using multiple factors, including link profile, content quality and keyword relevance, and is most useful when comparing the relative strength of different pages. Unlike domain authority, which reflects the overall ranking strength of an entire website, page authority focuses on individual pages. A blog post, product page or landing page with strong inbound links, good engagement metrics and technical SEO best practices will typically have a higher PA. Moz updates these scores regularly using machine learning models that simulate Google’s ranking algorithms. It is important to note that page authority is a predictive metric, not a direct ranking factor used by Google. Page authority helps marketers evaluate and prioritise content optimisation. For example, if a page with low PA is targeting a high-competition keyword, it may need stronger backlinks or content improvements to perform well. For B2B and SaaS companies, high-PA pages often serve as lead-generation tools, such as feature overviews or case studies. For nonprofits, pages with high authority might include core mission statements or evergreen impact stories. Regularly monitoring PA alongside other SEO metrics supports smarter content planning and resource allocation.