I Built a Real-Time SEO Linter That Lives Inside Your React App 🔍

If you've ever deployed a React app only to realize you forgot a meta description, had duplicate <h1> tags, or were missing Open Graph images — this post is for you. I just shipped a major update to react-seo-analyzer — a dev-mode SEO overlay that runs inside your browser as you build. No CLI, no external service, no manual audits. The Problem Lighthouse is great — but you only run it after you're done building. By then, SEO mistakes are already baked in across multiple components. What I wanted was something that behaved more like ESLint for SEO: instant, inline feedback while I'm coding. What it does Drop one component into your app: import SEOAnalyzer from ' react-seo-analyzer ' ; function App () { return ( <> < SEOAnalyzer /> { /* your app */ } </> ); } A floating panel appears in the corner of your browser with: 📊 An SEO score out of 100 🔴 Errors — things that will hurt your rankings 🟡 Warnings — things you should fix 🔵 Info — nice-to-haves And it automatically disappears in produ