Page Authority vs. Domain Authority: Understanding the Key Differences

page authority vs domain authority

Learning about SEO on a daily basis is essential to achieving online success. Two metrics that often come into play when it comes to determining website authority and search engine rankings are Page Authority (PA) and Domain Authority (DA). While they may sound similar, understanding the key differences between these metrics is crucial for crafting an effective SEO strategy.

Whether you’re a seasoned SEO professional or a website owner looking to improve your online presence, understanding each metric and knowing the distinctions will help you make informed decisions and help you take steps toward optimizing your website for maximum impact.

What is Domain Authority (DA)

Domain Authority (DA) is another metric developed by Moz, but it focuses on evaluating the overall strength and authority of an entire domain or website. It considers multiple factors, including the overall link profile, the number and quality of linking domains, the domain’s age, and other SEO-related signals across the entire domain. Similar to Page Authority, DA is measured on a scale from 0 to 100, with higher scores indicating a stronger potential to rank well.

What is Page Authority (PA)

Page Authority (PA) is a metric developed by Moz that predicts how well a specific webpage will rank on search engine result pages (SERPs). It is determined by analyzing various factors, including the quality and quantity of backlinks, on-page optimization, social signals, and other SEO-related elements specific to that particular page. PA is measured on a scale from 0 to 100, with higher scores indicating a greater likelihood of ranking well.

Key Differences between Page Authority and Domain Authority

Scope of Evaluation

  • Page Authority measures the strength and ranking potential of an individual page. It’s specifically tailored to assess the ranking potential of an individual webpage. It analyzes the page’s content, structure, and link profile to determine its authority.
  • Domain Authority measures the overall strength and ranking potential of an entire domain or website, taking into account the collective performance of all web pages within the domain.


  • Page Authority is calculated based on various factors such as the quantity and quality of backlinks, relevance of content, and other on-page optimization factors specific to that page. It’s influenced by factors such as the number and quality of backlinks pointing to the specific page, the relevance of those links, and the overall on-page optimization.
  • Domain Authority, on the other hand, takes into account the overall link profile, backlink quality, domain age, and other domain-level factors. DA considers the domain’s link profile, the number of unique linking domains, the domain’s age and history, and other domain-level SEO factors.

Area of Focus

  • Page Authority puts more emphasis on optimizing individual pages for better search engine rankings, taking into consideration on-page SEO factors such as keyword usage, content quality, and internal linking. Domain
  • Authority, on the other hand, focuses on overall domain-level factors and doesn’t directly consider on-page SEO.


  • Page Authority predicts how well an individual page will rank in search engine results,
  • While Domain Authority predicts how well an entire domain will rank.

Both scores range from 0 to 100, with higher scores indicating a greater potential for ranking well.

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Impact on Search Rankings

  • Page Authority is particularly important when you want to optimize and rank specific pages on your website. A high Page Authority suggests a higher likelihood of ranking a specific page prominently in search results for relevant keywords.
  • Domain Authority is important for understanding the overall strength and competitiveness of your entire domain compared to your competitors. Domain Authority provides a broader indication of the domain’s overall authority, which indirectly influences the ranking potential of individual pages within that domain.

Page Authority vs. Domain Authority FAQs

Q: Can Page Authority or Domain Authority guarantee high search rankings?
Neither Page Authority nor Domain Authority can guarantee high search rankings on their own. While they are useful metrics for evaluating website authority, search engine algorithms consider a wide range of factors when determining rankings. However, having a higher Page Authority or Domain Authority generally indicates a stronger potential to rank well.

Q: Can I improve my Page Authority and Domain Authority scores?
Yes, you can improve your Page Authority and Domain Authority scores over time. By focusing on creating high-quality content, optimizing on-page elements, acquiring authoritative backlinks, and enhancing the overall user experience, you can positively impact both metrics. However, it’s important to note that improving these scores requires consistent effort and a comprehensive SEO strategy.

Q: Are Page Authority and Domain Authority the only metrics that matter for SEO?
While Page Authority and Domain Authority are valuable metrics, they are not the only ones that matter for SEO. Search engine algorithms consider numerous factors, including relevance, content quality, user experience, site speed, mobile-friendliness, and many others. It’s crucial to adopt a holistic approach to SEO and prioritize a wide range of optimization techniques.

Q: Are domain authority & page authority measurements consistent across different SEO apps?

It’s important to note that both Page Authority and Domain Authority are relative metrics and should be used as comparative measures against competitors rather than absolute indicators of search engine rankings.

Different SEO apps have their own algorithms and methodologies for measuring domain authority. While the concept of domain authority is widely recognized, the specific calculations and factors taken into account can vary between different SEO tools and platforms. That is why the domain authority or page authority you see on ahrefs might be different than the one you get from SEMRush.

Moz, the company that introduced the concept of domain authority, has its own algorithm to calculate Domain Authority. It considers factors such as the quality and quantity of linking domains, the overall link profile, the age of the domain, and other SEO-related signals. Other SEO apps may have their own proprietary algorithms or may use similar factors to assess domain authority.

It’s important to note that while different SEO apps may provide domain authority metrics, there might be variations in the actual scores assigned to a particular domain. This discrepancy can arise due to differences in the underlying data sources, update frequency, and the specific algorithm used by each app.

To ensure consistency and accurate comparisons, it is recommended to use the same SEO app or platform consistently when tracking domain authority over time. This allows for better tracking of progress and a more reliable understanding of the domain’s authority in relation to its competitors.


Understanding the differences between Page Authority and Domain Authority is crucial for implementing an effective SEO strategy. While Page Authority assesses the ranking potential of individual web pages, Domain Authority provides insight into the overall strength and authority of a domain. By comprehending these metrics and their respective influences on search rankings, you can make informed decisions to optimize your website and improve its visibility in search engine results. Remember, while these metrics are valuable, they should be considered in conjunction with other essential SEO factors to achieve long-term success.

Improving both Page Authority and Domain Authority can be achieved through various SEO strategies, including building high-quality backlinks, creating valuable and relevant content, optimizing on-page elements, and improving the overall user experience on your website.

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