What is Page Authority? Complete Guide to Scoring, Metrics & SEO Impact

What is Page Authority?

Page Authority (PA) is a search engine ranking score developed by Moz that predicts how well a specific page will rank on search engine result pages (SERPs). The score ranges from 1 to 100, with higher scores indicating a greater ability to rank.

Page Authority is based on data from the Mozscape web index and considers factors like link profile strength, number of referring domains, link diversity, and content relevance. It’s calculated using a machine learning model that correlates page data with search results.

Why Page Authority is Important for SEO

• Ranking Prediction: Helps estimate how well a page can perform in Google results.
• Competitive Analysis: Compare PA scores to identify strengths and weaknesses.
• Link Building Focus: Guides which pages to prioritize for acquiring backlinks.

Key Factors Influencing Page Authority

• Quality and quantity of inbound links to the page
• Authority of linking domains
• Internal linking structure
• Content quality and relevance
• Social signals and user engagement

How to Increase Page Authority

• Earn backlinks from reputable and relevant websites
• Improve internal linking to distribute authority
• Publish high-quality, useful, and original content
• Remove or disavow toxic or spammy backlinks
• Promote content for social shares and visibility

Page Authority vs Domain Authority

While Page Authority measures the ranking strength of a single page, Domain Authority (DA) reflects the overall strength of an entire domain or website. A high DA helps all pages on a site perform better, but individual PA still determines page-specific rankings.

Tools to Check Page Authority

• Moz Link Explorer
• Ahrefs URL Rating (similar metric)
• SEMrush Authority Score

Monitoring and improving your Page Authority regularly helps ensure each important page on your website is optimized to rank competitively.