What domain authority actually is and why it matters

Domain authority is a score that predicts how well a website will rank in search results. It runs from 1 to 100, and higher scores mean search engines like Google are more likely to show your pages when someone searches. The score is based on how many other websites link to you, how trustworthy those linking sites are, and how long your site has been around.

Domain authority is not a Google metric — it comes from third-party tools like Moz and Ahrefs that try to estimate what Google actually does. Google does not publish a "domain authority" number for your site. But the factors that go into these scores — backlinks, site age, content quality — are things Google genuinely uses to rank pages.

A higher domain authority score makes it easier for new pages on your site to rank, because search engines already trust the domain. A lower score means each new page has to prove itself more. This is why established news sites and universities rank quickly for new content, while brand-new sites have to wait weeks or months.

Key Takeaways

  • Domain authority is built primarily through backlinks from other websites, especially from sites that already have high authority themselves.
  • Creating content that other websites want to link to — original research, data, tools, or thorough guides — is the most reliable way to earn backlinks naturally.
  • Broken backlinks from other sites pointing to pages that no longer exist on your domain should be fixed or redirected, because they waste the authority those links carry.
  • Your site's age, security (HTTPS), and technical health matter, but they are secondary to backlinks and content quality.
  • Domain authority grows slowly and unevenly; a single high-authority backlink can move your score more than dozens of low-authority ones.

Build backlinks by creating content other sites want to link to

Backlinks are the primary driver of domain authority. When another website links to yours, it signals to search engines that your content is worth reading. Links from high-authority sites count for much more than links from brand-new sites.

The most sustainable way to earn backlinks is to create something worth linking to. This means original research, data sets, tools, or guides that solve a real problem. A competitor's guide on the same topic will not earn you links — but a guide that includes original data, interviews, or a tool that does not exist elsewhere will. For example, if you run a fitness site, publishing the results of a survey you conducted about gym membership costs gives other fitness writers something to cite and link to.

Once you publish something link-worthy, reach out to websites that cover your topic and let them know it exists. Do not ask them to link to you. Instead, tell them what the content is and why it might interest their readers. If a tech news site covers productivity tools, and you have built a tool or published original research about productivity, that is worth mentioning to them. Many will link if the content is genuinely useful.

Fix broken backlinks and redirect old pages

When another website links to a page on your site that no longer exists, that link is wasted. The visitor bounces, and the authority that link carries is lost. Fixing these broken backlinks recovers that lost authority.

Use a tool like Ahrefs, SEMrush, or the free version of Moz to see which pages other sites are linking to. Look for links pointing to pages that return a 404 error (page not found). For each broken link, either restore the page, or set up a redirect from the old URL to a new page on the same topic. A redirect passes most of the authority from the old link to the new page.

If you have deleted a page intentionally and have no similar page to redirect to, consider rebuilding it. A page that earns backlinks from other sites is worth keeping, even if it is not your top priority. The authority it receives is real value.

Improve your site's technical foundation

Domain authority depends mostly on backlinks, but search engines also look at whether your site is fast, secure, and easy to crawl. These factors do not directly determine your score, but they affect how search engines treat your pages.

Make sure your site uses HTTPS (the padlock icon in the browser address bar). This is now expected by search engines and browsers. If your site still uses HTTP, move to HTTPS — most hosting providers offer this for free or a small fee.

Check your site speed using Google PageSpeed Insights. Pages that load in under three seconds rank better than slow pages. Common fixes include compressing images, using a content delivery network (CDN), and removing unnecessary code or plugins. If you use WordPress, plugins like Smush and WP Rocket handle most of this automatically.

Make sure search engines can crawl your site by checking Google Search Console for crawl errors. Fix any pages that return errors, and make sure your site map is submitted to Google Search Console and Bing Webmaster Tools. A site map is an XML file that lists all your pages — most site builders generate this automatically.

Create a content strategy that builds authority over time

Domain authority grows slowly because it is based on backlinks, and backlinks take time to accumulate. A site that publishes one piece of link-worthy content per month will build authority faster than a site that publishes ten pieces of forgettable content per month.

Focus on topics where you have real expertise or access to unique information. If you run a plumbing business, you can write guides about common plumbing problems that other sites will link to. If you run a SaaS company, you can publish data about how your customers use the product, or research about your industry. Generic content that dozens of other sites have already written will not earn backlinks.

Publish consistently but do not publish for the sake of publishing. One thorough, original guide per month is better than four generic posts per month. Over a year, that one guide per month will earn more backlinks and build more authority than the four generic posts.

Monitor your domain authority and learn from competitors

Check your domain authority score monthly using Moz, Ahrefs, or SEMrush. The score will not change every month — it updates roughly every few months — but tracking it over quarters and years shows whether your strategy is working.

Look at competitors in your space and see which pages of theirs earn the most backlinks. Use a tool like Ahrefs or SEMrush to see which of your competitor's pages have the most referring domains (the number of different websites linking to that page). These are the topics and formats that work in your industry. You do not need to copy them, but you can learn from them.

Pay attention to which of your own pages earn backlinks. If one guide earns ten backlinks and another earns none, look at what made the first one different. Was it more thorough? Did it include original data? Did you promote it differently? Use that insight to shape your next pieces.

Avoid tactics that damage domain authority

Do not buy backlinks or use services that promise to build links for you. Search engines penalize sites that use these tactics, and the penalty can drop your domain authority significantly. Links have to come from real websites that genuinely want to link to you.

Do not use private blog networks (PBNs) — networks of websites created solely to link to your site. Google actively looks for and penalizes these. The penalty is not worth the short-term boost.

Do not stuff keywords into your content or use hidden text. These tactics were common ten years ago and they still damage your authority today. Write for humans first, search engines second.

Do not ignore spam backlinks. If you notice links from obvious spam sites pointing to your domain, use Google Search Console to disavow them. This tells Google to ignore those links. Disavow sparingly — only links that are clearly spam or from unrelated sites — but do disavow them if they accumulate.

Frequently Asked Questions

How long does it take to see domain authority increase?

Domain authority scores update roughly every few months, so you may not see movement for three to six months even if you are earning backlinks. The first backlinks usually come slowly. After six months of consistent content and outreach, you should see measurable movement. After a year, the difference becomes clear.

Does social media help domain authority?

Social media shares do not directly increase domain authority because they are not backlinks. However, social media can help you reach people who might link to your content. If your post goes viral on Twitter or LinkedIn, more people see it and some of them may link to it from their own sites. The link is what matters, not the social share.

Can I improve domain authority without backlinks?

Backlinks are the primary factor, but you can improve your site's ranking potential by fixing technical issues, improving page speed, and publishing high-quality content. These changes help individual pages rank better, but they do not increase your domain authority score itself. Domain authority specifically measures backlink profile and site age.

What is a good domain authority score?

Domain authority is relative to your industry and competitors. A score of 20 is low for an established business site but good for a brand-new site. Compare your score to three direct competitors — if you are within five points of them, you are competitive. If you are ten points below, there is room to improve.

Should I worry about domain authority or focus on ranking for specific keywords?

Focus on ranking for keywords that bring you customers or readers. Domain authority is a tool to understand your site's strength, not a goal in itself. If you rank well for the keywords that matter to your business, your domain authority is probably fine. If you are not ranking for those keywords, improving domain authority will help, but you also need to optimize individual pages for those specific searches.