Every website page has a page authority (PA) score. This works in the same way that domain authority scores work, and they range from 1 to 100. This calculation is done by a company called MOZ and the score is largely impacted the quality and quantity of the websites that link to your web page. The better quality the links, the more your PA score will improve. The opposite is true as well. If there are a lot of poor quality links, linking to your website, that can damage your overall PA score. If you haven’t already checked out the previous search engine optimization FAQ, which talks about domain authority, you may want to check that out.