Page Authority (PA) is a score from Moz that predicts how well a webpage will rank on search engines, with scores ranging from 1 to 100. Higher scores mean better chances of ranking high. PA looks at things like the quality and number of links pointing to a page, as well as how relevant and engaging the content is. Unlike Domain Authority, which measures an entire site, PA focuses just on individual pages. To boost your PA, work on both your content and getting good backlinks.