The Domain Authority Checker is a free online tool by Mini SEO Tools to help analyze the strength and ranking power of any domain or website. By entering a URL, you can get the site's Domain Authority rating within seconds. Domain Authority Checker Free is a metric from Moz that indicates how likely a domain is to rank well in search engines. It considers on-page technical factors as well as off-page metrics like backlinks. The Domain Authority Checker provides this single score to understand your domain's overall SEO strength at a glance.