Page Authority

Page Authority (PA) is a metric created by Moz that estimates the ranking strength of a single web page, as opposed to Domain Authority which measures the entire domain. PA is calculated using a machine learning model that considers factors like the number and quality of backlinks pointing to the specific page, the authority of the linking pages, and other link-related signals.

While Page Authority and Domain Authority are related, they measure different things. A website with a high Domain Authority can have individual pages with low Page Authority if those pages have few backlinks. Conversely, a single viral blog post on a relatively unknown website can have a high Page Authority if it has earned many links. PA is most useful for evaluating the ranking potential of specific pages and for competitive analysis at the page level.

Like Domain Authority, Page Authority is a third-party metric and not a Google ranking factor. It should be used as a relative comparison tool rather than an absolute measure. When evaluating competitor pages or potential link building targets, PA provides a quick estimate of a page's strength. To improve a page's authority, focus on earning quality backlinks to that specific page, optimizing internal linking to direct link equity from stronger pages, and ensuring the page provides comprehensive, high-quality content on its topic.