Page Authority in SEO is a score that estimates how likely a specific page is to rank in search results compared with other pages. It is usually shown on a 1 to 100 scale by third-party SEO tools, with higher scores suggesting stronger ranking potential. Page Authority is not a Google ranking factor, but it is a useful comparative metric for evaluating page strength, link equity, and competition.
Why Page Authority matters
Page Authority helps beginners and in-house teams quickly judge whether a page has enough strength to compete for a target keyword. Unlike domain-level metrics, it focuses on the ranking ability of one URL. That makes it useful when you are deciding which page to optimize, which page to use for internal links, or whether a new page needs more backlinks before it can realistically rank.
It also helps with competitor research. If the top-ranking pages for a keyword all have much stronger Page Authority than your page, you may need a better content angle, stronger internal linking, or more external links to compete. If the gap is small, on-page improvements may be enough.
What affects Page Authority
Links to the page
The biggest influence is usually the quality and quantity of backlinks pointing directly to that page. A page with links from relevant, trusted websites will often have a stronger score than a page with few or weak links.
Internal linking
Links from important pages on your own site can pass authority to the target page. A strong internal linking structure can improve visibility and help search engines understand which pages matter most.
Overall page quality signals
Although Page Authority is a tool-based estimate, pages that are useful, well-optimized, and aligned with search intent are more likely to attract links and perform well over time.
How to use Page Authority in practice
Say your team wants to rank a product comparison page for a valuable keyword. Your page has a Page Authority of 24, while the top three competing pages score between 28 and 35. That tells you the keyword may still be within reach. A practical plan would be to improve the page copy, add clearer comparison tables, strengthen internal links from relevant blog posts, and earn a few backlinks from industry resources or partner sites.
Use Page Authority as a directional metric, not a final verdict. Compare similar pages, track changes over time, and combine it with keyword difficulty, search intent, content quality, and conversions. For SEO beginners, the best use of Page Authority is simple: identify weak pages that need support and strong pages that can help other URLs rank.