Topical Authority Checker

# You're Probably Overestimating Your Site's Topic Authority — Here's How to Check Most SEOs don't actually know if their site owns a topic. They write 15 pieces of content about one keyword cluster, link them internally, and assume they've built authority. Then they wonder why competitors rank instead — competitors who've mapped out their cluster properly and built real depth across 40+ pieces with tight internal linking. They might spend thousands on backlinks, only to see minimal movement because their foundational topic structure is weak. A study by Ahrefs, analyzing millions of top-ranking pages, found that 90% of pages ranking in the top 10 also rank for at least 1,000 other keywords, indicating broad topical relevance and depth. The real issue is you can't feel topical authority. You need to measure it. That's where a topical authority checker comes in — it scores your domain against a specific keyword and tells you exactly where you're weak, giving you a clear, data-driven path to improvement. What Is a Topical Authority Checker? Topical Authority Checker is a free browser-based tool that analyzes any domain and scores how much authority you've built around a single keyword. No login required. You paste in a domain and keyword, and the tool crawls your content to measure three things: content depth (how thoroughly you cover the topic), cluster coverage (whether you've written about related subtopics), and internal linking structure (how well your content connects to itself). It gives you a score from 0 to 100 — higher means stronger authority signals for that keyword in Google's eyes. This score isn't just an arbitrary number; it's a representation of how well your site signals its expertise on a subject to search engine algorithms, which in turn influences ranking potential. Here's how each of the three core…