Page Authority

Page Authority is the page-level cousin of Domain Authority. While DA scores a whole domain, PA scores an individual URL. The score uses a similar 0–100 scale and is heavily influenced by the page's specific backlink profile (how many external sites link directly to that URL) plus the domain's overall authority.

PA matters because Google ranks pages, not domains. A high-PA page on a moderate-DA domain can outrank a low-PA page on a high-DA domain for the same query. This is why a single great blog post on an indie SaaS site can sit at #1 above pages from major brands — that one URL has earned enough links to outweigh the overall domain gap.

The practical implication: rather than spreading link-building effort thin across many pages, concentrate it on the 5–10 highest-value URLs (your money pages, your best content). Drive backlinks to those URLs directly. Internal linking from your other pages also lifts PA on the link targets.

PA is more volatile than DA — a few new backlinks can shift PA meaningfully on a low-traffic URL. Track PA on your money pages monthly to spot ranking opportunities and lost-link recovery situations.