JWT Decoder
Decode JWT tokens
About JWT Decoder
Decode and inspect JSON Web Tokens (JWT) without sending them to any server. View the header, payload, and verify expiration status. Essential for debugging authentication flows and API integrations.
Frequently Asked Questions
What is a JWT?▼
A JSON Web Token (JWT) is a compact, URL-safe token format used for securely transmitting information between parties. It consists of three parts: header, payload, and signature.
Does this tool verify JWT signatures?▼
This tool decodes and displays the JWT contents but does not verify the cryptographic signature, as that requires the secret key or public key.
Is it safe to paste my JWT here?▼
Yes, the decoding happens entirely in your browser. Your token is never sent to any server. However, never share JWTs publicly as they may contain sensitive information.