🔐 JWT Pro (Source Code)

JWT Pro is a single-file, client-side JSON Web Token (JWT) inspection tool that decodes and analyzes tokens instantly in the browser. It helps developers inspect headers and payloads, detect expiration issues, and spot insecure configurations - all without uploading tokens or using any backend. Built for developers who need a fast, privacy-first JWT debugger they can host, customize, or bundle into their own tools.✅ What this tool does Decode JWT header and payload instantly Syntax-highlighted, readable JSON output Expiration (exp) validation with time remaining Human-readable timestamps for JWT time claims Detect insecure alg: none tokens Visual token status (Valid / Expired / Warning) One-click copy decoded JSON Works fully offline after load Responsive, modern developer UI 🧱 Tech details Pure HTML + CSS + JavaScript Client-side only No backend No database No build step Single-file implementation (index.html) Fully static — host anywhere 📦 What you get Full source code (index.html) Premium glassmorphism UI JWT decoding & analysis logic Syntax highlighting implementation Expiration & security checks Mobile-friendly layout Ready to deploy or customize 👤 Who this is for Frontend developers Backend & API developers Indie hackers & makers SaaS builders Security-focused projects Freelancers building internal tools Students learning JWT & authentication concepts 🌐 Live Demo👉 https://token-inspector-gamma.vercel.app🔒 Privacy-first by design Runs entirely in the browser No token storage No tracking No API calls Sensitive tokens never leave the device

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