Scans a URL for the demotion signals Google's Helpful Content Update (September 2023 onward) actually filters on: thin content, programmatic-template reuse, missing first-party experience, affiliate-without-insight density, AI-boilerplate patterns, missing author + date + review apparatus. Complements E-E-A-T Analyzer and Trust Signal Surface Audit.
Read the story behind this tool: Why HCU Pattern Detector Exists →
HCU + SPA shell = 100% noise. The static HTML on those platforms is mostly nav; the article body lives in JavaScript. Paste your post-hydration outerHTML here and the same 10 HCU pattern checks run against what humans (and AI retrievers) actually see. Beginner walkthrough for Chrome / Firefox / Safari / iPhone / Android.