Page Authority
Page Authority (PA) is a Moz metric that predicts how well a specific page will rank in search results, measured on a logarithmic 0-100 scale based on the page's own link profile and other factors.
While Domain Authority measures site-wide strength, Page Authority evaluates individual pages. A high-DA site can have low-PA pages (new or unlinked content), and a low-DA site can have high-PA pages (a single viral article with many backlinks).
Page Authority matters because Google ranks pages, not domains. A specific blog post competes in SERPs based on its own authority, relevance, and content quality — not just the domain's overall strength.
Improve Page Authority by building backlinks to specific pages (not just the homepage), creating strong internal links from high-authority pages on your site, and ensuring the page has comprehensive, high-quality content that earns natural links over time.
Related terms
Domain Authority
Domain Authority (DA) is a search engine ranking score developed by Moz that predicts how likely a website is to rank in search results, measured on a logarithmic scale from 0 to 100.
Domain Rating
Domain Rating (DR) is a proprietary metric by Ahrefs that measures the strength of a website's backlink profile on a logarithmic scale from 0 to 100.
Link Equity
Link equity (also called link juice or PageRank) is the value and authority that a hyperlink passes from the linking page to the target page, influencing the target's ranking potential.
Backlinks
Backlinks (inbound links) are hyperlinks from external websites that point to your site. They act as votes of confidence and are a major ranking factor for search engines.
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