Domain authority and page authority are two of the most referenced metrics in SEO conversations, and two of the most misunderstood. The question of domain authority vs page authority is not just academic. How you answer it shapes how you build links, how you evaluate competitor strength, and where you focus your SEO investment.
Here is the honest version: neither metric is a Google ranking factor. Both are third-party scores created by Moz to estimate link-based strength. Google has its own internal signals that these scores approximate but do not replicate. Using them to guide strategy is useful. Treating them as the goal is a mistake that leads businesses in the wrong direction.
This post explains what each metric measures, how they are actually useful, and what to focus on instead of chasing numbers.
What Domain Authority Actually Measures
Domain authority, or DA, is a score from 1 to 100 that Moz developed to predict how well an entire website is likely to rank in search results. It is calculated using the number and quality of external links pointing to the domain, the trustworthiness of those linking domains, and the overall link profile strength.
A domain with a DA of 70 has a stronger link profile than one with a DA of 30. In general, higher DA domains have an easier time ranking new pages because each new page inherits some of the domain’s accumulated authority.
But the metric has real limitations.
DA is logarithmic, not linear. Moving from 20 to 30 is easier than moving from 60 to 70. A business that spends two years building its DA from 28 to 32 has not moved its SEO position nearly as much as the number change implies.
DA also does not reflect topical relevance. A domain can have a high DA and still struggle to rank in a specific niche if the links it has accumulated are from irrelevant industries. Google cares about relevance as much as raw link volume, and Moz’s DA score does not capture that dimension precisely.
Use DA as a rough comparison tool when evaluating competitors or assessing whether a potential link source has meaningful authority. Do not use it as a primary performance metric for your own SEO program.
What Page Authority Actually Measures
Page authority, or PA, is the same type of 1 to 100 score applied to an individual URL rather than an entire domain. It estimates how likely a specific page is to rank well, based on the links pointing to that particular URL.
A homepage or a cornerstone resource page that has earned many external links over time will have a higher PA than a newly published blog post with no external links yet. PA is also influenced by the internal linking structure of the site, since internal links from high-PA pages pass some of that authority to linked pages.
PA is where the metric becomes directly useful for tactical decisions.
When you are building an internal linking structure, PA logic guides where to send links from within your site to lift specific pages. A high-PA resource page with strong external link equity can pass meaningful authority to a conversion-focused page if linked properly.
PA also helps evaluate the strength of individual pages in competitor analysis. If a competitor’s specific blog post or service page has earned high PA, it signals that the page has accumulated significant link equity and will be harder to displace.
Domain Authority vs Page Authority: A Direct Comparison
| Factor | Domain Authority | Page Authority |
| What it measures | Entire website link strength | Individual URL link strength |
| Scale | 1 to 100 | 1 to 100 |
| Useful for | Evaluating overall site competitiveness | Evaluating specific page competitiveness |
| Influenced by | All external links across the domain | Links to that URL plus internal links |
| Google ranking signal | No | No |
| Best use case | Competitive benchmarking | Internal linking strategy and content prioritization |
Both scores are diagnostic tools. Neither is a goal. The goal is organic visibility and revenue. DA and PA are indicators of the link equity that supports or limits that visibility, nothing more.
What to Focus on Instead of Chasing Scores
This is where most businesses get the strategy wrong. They see a competitor with a DA of 55 and decide the goal is to reach a DA of 55. That is backwards.
High DA and PA are outcomes of doing the right things. They are not inputs you can engineer directly. The inputs are acquiring high-quality, relevant external links through credible outreach and valuable content, building a clean internal linking structure, and producing content worth linking to in the first place.
Understanding what is link building seo, and what distinguishes a meaningful link from a low-quality one, is the prerequisite for building authority that moves rankings. The metric is just the scorecard.
We have worked with businesses across multiple US markets where a lower DA site outranked a higher DA competitor consistently, because the lower DA site had more topically relevant links, better on-page optimization, and a cleaner technical foundation. The score did not predict the outcome. The underlying work did.
Sustainable authority building follows this sequence:
- Produce content that earns links because it is genuinely useful or original
- Pursue relevant link placements through targeted outreach
- Build clean internal linking that routes authority to priority pages
- Monitor your link profile for low-quality links that might need to be disavowed
- Track rankings and organic traffic as the actual performance measure
The white-hat-link-building-strategies guide covers the execution of this process in detail, including the specific tactics that produce the kind of links that improve DA and PA as byproducts of real authority building.
Common Mistakes Around DA and PA
- Treating DA as a goal rather than an indicator. A business that sets “reach DA 40” as a KPI is measuring the scorecard instead of the game. The KPI should be rankings for target keywords and organic traffic from those rankings. DA improvement is a sign that the right work is being done, not the destination itself.
- Choosing link building targets based on DA alone. A high DA website that has nothing to do with your industry produces a link with far less ranking value than a lower DA website closely related to your niche. Relevance always outweighs raw authority score. A link from a major general news site is less valuable to a local plumber in Dallas than a link from a regional contractor trade publication.
- Assuming high PA pages will rank without quality content. PA helps a page compete for rankings. It does not substitute for on-page quality, keyword alignment, and content depth. A high PA page with thin content will lose to a lower PA page with comprehensive, intent-matched content in most competitive scenarios.
Obsessing over competitors’ DA instead of their specific ranking pages. A competitor’s overall DA tells you something about their site’s general strength. The PA of the specific page ranking for a target keyword, combined with the quality of that page’s content, is the more actionable data point. Focus competitive analysis on the page that is actually ranking, not the site as a whole.
FAQ
Is domain authority a Google ranking factor?
No. Domain authority is a Moz proprietary metric, not something Google uses directly. Google has its own internal measure of link-based trust called PageRank, which is not publicly exposed. DA approximates that signal but is not the signal itself.
Which is more important, domain authority or page authority?
It depends on context. For evaluating overall competitive position, DA is the more useful benchmark. For internal linking strategy or assessing a specific competitor page, PA is more relevant. For most day-to-day SEO decisions, neither should be the primary focus.
Can I improve my domain authority quickly?
No. DA is a lagging indicator that reflects the accumulation of quality external links over time. Consistent, high-quality link building over several months is the only reliable path to meaningful DA growth. Shortcuts like buying links carry penalty risk and rarely produce sustained improvement.
What is a good domain authority score?
It is relative to your competitive landscape. A DA of 30 might be strong for a niche local service business in a mid-size city and weak for a national eCommerce brand competing against retailers with DA scores in the 70s. Always evaluate your DA against the competitors ranking for the specific terms you want to win.
Does losing a backlink hurt my domain authority?
Yes, eventually. When a high-quality site removes a link to your domain, that link equity is no longer credited and your DA may decrease slightly. A single lost link rarely produces a meaningful drop. A sustained pattern of link loss without new links being earned is a signal worth addressing through active link building.
The Bottom Line
Domain authority vs page authority is ultimately a question about which diagnostic metric is more useful in which situation. Both have value. Neither should be the primary goal of your SEO strategy. The goal is rankings and revenue. Authority metrics are indicators of the link equity that supports those rankings, and they improve as a byproduct of building links the right way, consistently, over time.
The businesses that understand this build compounding authority rather than chasing scores. That is the difference between an SEO strategy built on metrics and one built on outcomes.
Want to understand where your site’s authority actually stands and how it compares to competitors ranking above you?
Start with a free SEO audit and find out exactly where your site stands. We will assess your link profile, identify the gaps, and give you a clear picture of what a realistic authority building plan looks like for your market. Visit our Link Building Service Page to learn more.