Page Authority is a proprietary metric developed by Moz to assess the ranking potential of a single page rather than an entire domain (see Domain Authority).
It is calculated based on multiple factors, including the number of backlinks, link quality, and other off-page signals, and uses a machine learning algorithm to best correlate with rankings across thousands of SERPs.
The score is logarithmic, which means it’s easier to improve a page’s PA from 20 to 30 than from 70 to 80. It is important to note that Page Authority does not factor in specific on-page SEO elements like keyword use or content quality directly.
Rather, it is heavily dependent on link-related metrics, such as the quality and diversity of incoming links.
Page Authority helps estimate how competitive a page is likely to be in search rankings. It’s especially useful when comparing individual pages against competitors to guide decisions about which content to improve, promote, or build links to.
For landscaping business owners, understanding which service or blog pages have high authority can help prioritize efforts for content marketing and SEO improvements.
In practical terms, building up the PA of key pages like your homepage, core services, or top-performing blog articles can lead to more visibility and organic traffic, which ultimately helps generate more leads.
Example
Suppose your landscaping website has a blog post about “sustainable garden design” with a Page Authority of 25, while a competitor’s similar page has a PA of 40.
This suggests that the competitor’s page is more likely to rank higher unless you work to improve your page’s authority through tactics like earning backlinks from relevant websites or sharing the content on high-traffic platforms.