Page Authority

Page authority, or PA, is a metric developed by Moz to approximate how well a particular webpage is likely to rank in search engines. PA ranges from 0 to 100. Numbers closer to 100 indicate that the webpage is likely to rank well in SERPs, and lower numbers indicate that that page is not likely to rank well. PA is not a ranking factor in Google and has no effect on SERPs — it’s simply for SEOs, webmasters, marketers, and others to get a sense for how powerful the specific webpage most likely is in a search engine’s eyes.