JWT デコーダー & 検証ツール

エレガントなインターフェースでJWTトークン (JSON Web Token)をデコードと検証

JWT Decoder & Verifier is a browser extension that helps developers and security professionals work with JSON Web Tokens (JWT). It provides real-time decoding and signature verification in a beautiful, user-friendly interface. ### Why Choose This Extension? - **Real-time Decoding**: Instantly see the decoded header and payload as you paste your JWT - **Visual Clarity**: Color-coded token sections for better readability - **Secure Verification**: Verify JWT signatures with your secret key - **Base64 Support**: Built-in support for Base64 encoded secrets - **Developer Friendly**: Clean interface designed for daily development workflow - **Multi-language Support**: Available in 20+ languages - **Privacy First**: All processing happens locally - no data leaves your browser ### Perfect For: - Backend Developers working with JWT authentication - Frontend Developers debugging JWT-based APIs - Security Professionals analyzing JWT tokens - QA Engineers testing JWT implementations - DevOps Engineers troubleshooting JWT issues