When evaluating a website’s SEO strength, Page Authority (PA) and Domain Authority (DA) are two commonly used metrics. PA estimates the ranking strength of an individual webpage, while DA evaluates the overall strength of a domain. Although these metrics are not direct Google ranking factors, they are useful for comparing websites, evaluating backlinks, and identifying potential link-building opportunities. Here are five reliable PA DA checker tools worth considering:
1. Moz Authority Checker is one of the best-known tools for checking Domain Authority and Page Authority. It provides DA, PA, linking domains, inbound links, and other useful SEO information. Its database is particularly useful when you want to understand the backlink profile behind a website’s authority score.
2. Ahrefs is a powerful SEO platform that offers extensive backlink and website analysis. While Ahrefs primarily uses its own metrics—such as Domain Rating (DR) and URL Rating (UR)—rather than Moz’s DA and PA, it is an excellent alternative for measuring website and page-level authority.
3. Semrush is another comprehensive SEO platform. It focuses on metrics such as Authority Score, backlink profiles, organic traffic, referring domains, and keyword rankings. If you want more than a simple PA/DA number, Semrush provides a broader picture of a website’s SEO performance.
4. Small SEO Tools offers a convenient collection of free SEO utilities, including website authority-checking tools. It is suitable for users who need quick checks without subscribing to an expensive professional SEO platform.
5. Website SEO Checker provides several free SEO analysis tools, including domain and page authority checking. It can be useful for quickly comparing multiple websites when conducting basic competitor research or prospecting for backlinks.
Final Thoughts
For the most reliable PA/DA data, Moz is the natural choice because DA and PA are Moz’s proprietary metrics. If you need a more comprehensive SEO evaluation, Ahrefs and Semrush are stronger choices because they combine authority metrics with backlink, traffic, keyword, and competitor data. For occasional free checks, Small SEO Tools and Website SEO Checker are convenient options.
Remember that a high DA or PA score alone does not guarantee Google rankings. Relevance, backlink quality, content quality, organic traffic, and technical SEO should also be considered when evaluating a website.