What is Page and Domain Authority?
Kirjoittanut Tapio Kauranen
Kirjoitettu: 21.7.2026 - Muokattu: 22.7.2026 Kirjoittanut Tapio Kauranen
Kirjoitettu: 21.7.2026 - Muokattu: 22.7.2026Sisällysluettelo
They are based on MOZ’s Mozscape Web Index, which consists of the number of links, MozRank, and MozTrust. In a nutshell, Page and Domain Authority calculate a site’s trustworthiness in the eyes of search engines by evaluating the number and quality of sites linking to it.
Domain Authority is therefore like the sum of all the site’s PA values.
A high PA score means that a specific subpage has many strong links.
A high DA score means that the entire site has many strong links.
A link’s popularity can be increased by sharing links from one website to another. Here, quality replaces quantity.
A link from a popular site like Iltalehti.fi or Helsingin Sanomat is hundreds of times more valuable than one from a blog that deals with peeling potatoes.
The link should also come from a site that deals with the same subject area.
MozRank is calculated on a scale of 0-10. The most common score for a link worldwide is 3.
It is similar to MozRank, but instead of calculating a link’s popularity, MozTrust measures its trustworthiness, i.e. whether the link comes from a reliable source or is spam.
A site that ranks at the top of search results in its own field can be considered reliable.
However, these scores alone do not indicate the exact position a link will appear in search results. In addition to links, ranking is also affected by the site’s internal search engine optimization, i.e., how well the page content and description match the search query.
Why doesn’t Kaivokukka.fi appear in the 1st position in search results even though its PA and DA scores are higher than, for example, Kampinkukka.fi? Because Kaivokukka’s site is poorly search engine optimized.
Compare Kaivokukka’s search engine listing to the others.
There are also issues with Kaivokukka’s website
However, with small edits, Kaivokukka could still reach at least a couple of positions higher if desired.
PA and DA numbers only work as a tool for search engine optimization.
A site with a high DA but a low PA may appear with good rankings in search results, but it can be relatively easily outperformed with search engine optimization.