JWT Decoder
Free online JWT decoder. Parse JSON Web Tokens and inspect Header, Payload, and Signature. Base64-decoded and formatted for easy debugging.
How to Use
Free online JWT decoder. Parse JSON Web Tokens and inspect Header, Payload, and Signature. Base64-decoded and formatted for easy debugging. This tool is completely free, no registration required. All data processing happens locally in your browser - nothing is uploaded to any server.
FAQ
What is JWT?
JWT (JSON Web Token) is an open standard for securely transmitting information between parties as a JSON object. Commonly used for authentication.
Can JWT decode reveal secrets?
JWT Header and Payload are only Base64-encoded, not encrypted. Anyone can decode and read them. The Signature requires the secret key to verify.
What are the parts of JWT?
A JWT consists of three parts: Header, Payload, and Signature, separated by dots (.).