Domain Authority vs. Page Authority: Difference Explained

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Think of your website like a building. Domain authority is the reputation of the entire structure: how trusted it is across the neighborhood. Page authority is the reputation of a single room inside that building. Both metrics were initially created by Moz, but they measure fundamentally different things.

One tells you how strong your entire site is. The other tells you whether a specific page has enough link equity to compete for a given keyword. Confusing the two, or ignoring one entirely, leads to bad SEO decisions.

This guide covers domain authority and page authority in plain terms: what each metric actually measures, how they're calculated, and where they differ. You'll also get concrete steps to improve both scores and use them to prioritize your efforts. No theory, just practical takeaways you can act on today.

What Is Domain Authority?

Domain Authority (DA) is a search engine ranking score developed by Moz that predicts how well an entire website is likely to perform in search engine results pages. Scored on a scale from 1 to 100, a higher number signals stronger ranking potential. 

Moz built this metric so SEO professionals could quickly assess a site's overall strength without digging through dozens of data points. One thing to be clear about: DA is NOT a Google ranking factor. Google has confirmed they don't use it. That said, DA tends to correlate closely with actual search rankings, making it a practical shorthand for evaluating your competitive position or deciding whether a potential backlink source is worth pursuing. If you're working through a competitor keyword gap analysis, DA scores can add helpful context to the picture.

How Domain Authority Is Calculated

Moz uses a machine learning model that draws from over 40 different signals to calculate DA. The factors that carry the most weight are the number of linking root domains (meaning unique websites that point back to your site), total backlink count, and the overall quality of those links. The model then measures your site against millions of others in its index and assigns a score accordingly.

Other SEO platforms take a similar approach with their own proprietary metrics. Semrush's Authority Score, for instance, calls it a Domain Rating (DR) and blends backlink signals with organic traffic estimates and spam indicators to generate its own 0-100 rating. The core logic across all these tools is essentially the same: the more high-quality backlinks you earn, combined with strong organic performance, the higher your score climbs. If you're exploring which platforms give you the best visibility into these metrics, our roundup of B2B SEO tools covers some solid options.

What a Good Domain Authority Score Looks Like

There's no universal “good" DA number. It all depends on who you're up against. If you're a B2B SaaS startup going head-to-head with other early-stage companies that hover in the 20-30 range, a DA of 35 puts you in a solid position. But if your competitors are enterprise-level brands sitting comfortably above 70, that same 35 tells you there's a significant gap to close.

Here's a rough framework to keep in mind: brand-new websitesstart with a DA of 1. Established small businesses and startups usually fall somewhere between 20 and 40. Major publications and well-known brands tend to sit above 70. One important detail: the scale is logarithmic. That means jumping from 20 to 30 is far more achievable than going from 70 to 80, because each additional point requires exponentially more effort to earn. Instead of fixating on a specific target number, put your energy into narrowing the gap between your score and the scores of your direct competitors. That gap is what actually shapes your SEO strategy and tells you how aggressively you need to invest in link building, content, and overall site authority.

What Is Page Authority?

If Domain Authority sizes up your entire website, Page Authority (PA) zooms in on a single URL. It answers one specific question: how likely is this particular page to rank well in search results? That distinction matters more than most people realize, because not every page on a high-DA site performs equally. Some pages attract dozens of quality backlinks and land on page one. Others sit buried with zero external links and no organic traffic at all.

How Page Authority Is Calculated

Page Authority relies on the same machine learning model behind Domain Authority: same 1-to-100 logarithmic scale, same core methodology. But instead of evaluating signals across your entire domain, it focuses exclusively on the link profile and ranking signals for a single URL.

The factors that shape a page's score overlap with DA but apply at a much more granular level. Here's what carries the most weight:

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Internal linking plays a bigger role here than most people expect. As outlined in this breakdown of link building techniques, strategic internal links help pass link juice to specific pages, improve crawlability, and directly lift page-level authority. A page buried three clicks deep with no internal links pointing to it will almost always score lower than one that's well-connected within your site architecture. If you're working on improving how your pages rank for specific terms, getting your B2B Keyword Research right first will help you identify which pages deserve the most internal link support.

One thing worth noting: PA updates frequently as the link index changes. So a page that earns a burst of backlinks after a successful content campaign can see its score climb within weeks.

What a Good Page Authority Score Looks Like

Just like DA, there's no magic PA number to chase. A “good" score depends entirely on what you're competing against in the search results for a given keyword. If the top five results for your target term all have page authority scores between 40 and 55, and your page sits at 25, you know exactly where the gap is.

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For B2B SaaS companies, this is especially useful when prioritizing content updates. Got a page with solid on-page SEO but a PA of 18 while competitors rank with scores above 40? That page needs more backlinks, better internal linking, or both before you invest time rewriting the copy. PA helps you figure out whether the problem is content quality or link equity, so you spend effort where it actually moves the needle. Understanding the relationship between SEO ranking fluctuations and link equity can also help you separate temporary dips from genuine authority gaps that need fixing.

Domain Authority vs. Page Authority: Practical Difference

This comparison table breaks down the key differences between page authority vs. domain authority across the criteria that matter most for day-to-day SEO decisions:

Common Misconceptions About Domain Authority and Page Authority

It is easy to misapply these metrics without realizing it. Here's a quick audit process to make sure you're applying them correctly:

1. Stop treating DA as a Google ranking factor. It's a third-party prediction score. Google doesn't use it. Use DA to benchmark against competitors, not as a KPI for your SEO program. If you're building your SEO toolkit, remember that DA is one data point among many, never the whole picture.
2. Don't assume a high DA guarantees every page will rank. A site with a DA of 70 can still have individual pages with low PA that go absolutely nowhere in search results. Always check page-level metrics before deciding where to invest your time and resources.
3. Avoid comparing DA scores across different tools. Moz's Domain Authority and SemRush’s Domain Rating use completely different models. A DA of 45 in Moz doesn't equal a DR of 45 in SemRush. Pick one tool and stay consistent throughout your analysis.
4. Don't ignore PA when planning content refreshes. If a page sits on page two with solid on-page optimization but a PA that's 20 points below the competition, the problem is authority, not content quality. Direct your link-building efforts there first. 

Sticking to these steps keeps your SEO decisions grounded in what each metric actually tells you, rather than what you assume it means.

How to Improve Domain Authority and Page Authority

Understanding the difference between domain authority vs. page authority is only half the battle. The other half is taking action. Here's how to push both scores upward, broken into clear, practical steps you can start using right away.

Steps to Boost Your Domain Authority

Domain authority grows when your entire site earns trust from external sources. That doesn't happen overnight, but the path forward is straightforward:

1. Earn backlinks from diverse, reputable domains. A single link from a respected industry publication carries more weight than fifty links from low-quality directories. Focus on guest posts, original research, and partnerships that attract editorial links organically.
2. Audit and avoid toxic links. Spammy backlinks erode your link profile over time. Run regular link audits and clean up anything that looks manipulative or irrelevant to your niche.
3. Publish content consistently. A steady flow of useful, well-structured content gives other sites a reason to reference you. Building a strong online presence through content is one of the most reliable ways SaaS companies attract inbound links and establish thought leadership.
4. Fix technical issues that hurt crawlability. Broken pages, slow load times, and messy site architecture all send negative signals. Keep your technical foundation clean and well-organized.

Steps to Boost Your Page Authority

Page authority responds to more targeted actions. You're not trying to lift the entire site here — you're strengthening one URL at a time. 

1. Create quality content. Crafting high-quality, informative, and engaging content is fundamental to page authority. Ensure your content aligns with the interests and needs of your target audience. Regularly update your content to reflect current trends and maintain its relevance and depth.
2. Optimize on-page SEO. Optimize your page title, meta descriptions, and headers to include relevant keywords without sacrificing readability. Ensure your page loads quickly and is mobile-responsive to provide a seamless user experience across all devices.
3. Build internal and external links. Internal linking connects your pages, improving navigation for users and signaling important pages to search engines. Meanwhile, acquiring high-quality backlinks from reputable sources boosts credibility and page authority.
4. Leverage social media. Engage with your audience on social media platforms to increase content visibility and drive traffic to your site. Social signals, while indirect, can influence page authority as they improve brand awareness and authority in your niche.
5. Monitor and analyze performance. Use tools like Google Analytics to track your page's performance, examining metrics such as bounce rate, time on page, and conversion rates. This data provides valuable insights for refining your strategy and further improving page authority.

Conclusion

Domain authority vs. page authority really boils down to which question you're asking. Want to understand how your site stacks up against competitors overall? DA is your metric. Trying to figure out if a particular URL has enough strength to claim a ranking spot? That's where PA comes in. When you look at both together, you get a much clearer sense of where to focus your SEO work, whether that means earning more backlinks, tightening up your internal linking, or fixing underperforming pages that should be doing better given the strength of the domain they sit on.

Entlify team approaches this by working as an extension of your own, helping to identify exactly where your site is losing “link equity" or which technical hurdles are holding your DA back. If you’re looking for a partner to help navigate these complexities and connect the dots between SEO data and revenue, we’re here to help.

FAQs

Can a page with high page authority outrank pages on sites with higher domain authority?

Yes, a page with strong PA and a solid backlink profile can absolutely outrank pages on higher-DA sites, especially for less competitive keywords where page-level signals carry more weight than sitewide strength.

How often should I check page authority and domain authority scores?

Checking monthly is usually enough for DA since it shifts slowly, but reviewing PA more frequently makes sense when you are running active link-building or content campaigns targeting specific URLs.

Does improving one page's authority help raise the domain authority of my whole site?

Indirectly, yes. When individual pages earn quality backlinks, those links contribute to your overall backlink profile, which is a major input in how your sitewide score is calculated over time.

Why did my domain authority drop even though I did not lose any backlinks?

DA is a relative score, so if competing sites gained links or Moz updated its index, your score can decline even without changes on your end. This is why tracking competitor scores alongside your own gives you better context.

Should new websites focus on building domain authority or page authority first?

New sites benefit most from concentrating link-building efforts on a handful of key pages, which builds PA where it matters while simultaneously contributing to overall domain strength as your backlink profile grows.

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