"Domain authority" is a score that estimates how strong a website's link profile and search presence are. Search engines do not use these third-party scores directly, but they are a handy way to compare sites.
How our authority score works
The domain authority checker scores domains from 0 to 100 based on how many different sites link to them, how many links they have, and how many keywords they appear for in our data. More referring domains count far more than many links from one site.
Why it matters
When every top result for a keyword has a high score, a new site will struggle. Keyword difficulty uses the authority of the top 10 results for exactly this reason.
Authority is relative
A score of 30 can be strong in a small local niche and weak in a national one. Always compare against the sites that rank for the keywords you want, not against an abstract target.
What authority does not tell you
- Whether a specific page will rank: a strong page on a medium site often beats a weak page on a strong site.
- Whether links are relevant: authority counts links, it does not judge how well they fit your topic.
- Whether traffic is real: some sites have many links but few visitors.
Using authority in practice
- Choosing keywords: if the top 10 all have far higher authority, choose a more specific keyword for now.
- Choosing link prospects: prefer relevant sites with real audiences over high scores alone.
- Tracking progress: check your own score every few months as links grow.
The bulk domain authority checker compares up to 20 domains at once.
How to grow it
- Publish content other sites want to reference: data, guides, tools.
- Get listed where your customers look: directories, associations, partners.
- Fix broken pages that already have links pointing to them.
Focus on relevant links. Ten links from sites in your field beat a hundred from unrelated ones.
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