Definition
Page Authority (PA) is a score developed by Moz that evaluates the likelihood of an individual web page ranking well in search results. Unlike Domain Authority which measures the overall strength of a domain, PA focuses on a specific URL. The score ranges from 0 to 100 and takes into account inbound links to that specific page, their quality, diversity, and other proprietary Moz factors. PA is particularly useful for evaluating the value of a backlink from a given page: a link placed on a page with a high PA will generally transmit more link juice than a link on a low PA page. Like DA, PA is logarithmic: it is easier to go from 20 to 30 than from 70 to 80.
Key Points
- Score from 0 to 100 measuring individual page strength, not the entire domain
- Complementary to Domain Authority: PA evaluates a URL, DA evaluates the domain
- Logarithmic scale making progress harder as the score increases
Practical Examples
Choosing a link placement
An advertiser on LemmiLink compares two pages proposed by a publisher: the homepage (PA 52) and a blog post (PA 28). They choose the homepage to maximize the backlink's impact.
Internal page audit
During an audit, an agency identifies that some strategic pages have a PA below 15 despite good content. They recommend an internal linking and targeted external link campaign for these pages.
Frequently Asked Questions
Domain Authority measures the overall strength of an entire domain, while Page Authority evaluates the strength of a specific page. A site can have a DA of 60 but some internal pages will have a PA of 15 if they receive no links. Both metrics are complementary for evaluating a backlink's value.
Obtain quality backlinks pointing directly to that page, improve internal linking by linking to it from your strongest pages, and ensure the content is comprehensive and relevant. Use LemmiLink to target links to your strategic pages.
Go Further with LemmiLink
Discover how LemmiLink can help you put these SEO concepts into practice.
Last updated: 2026-02-07