JWT Token Tool
Generate and decode JSON Web Tokens (JWT) with ease
Header
JWT header (algorithm and type)
Payload
JWT payload (claims and data)
Secret Key
Your secret signing key
Keep this key secure and private
Generated JWT Token
Click to copy the token
JWT Structure
Header
Contains token type (JWT) and signing algorithm (HS256, RS256, etc.)
Payload
Contains claims (user data, expiration, issued time, etc.)
Signature
Verifies token hasn't been tampered with (created using secret key)
Security Notes
JWTs are encoded, NOT encrypted - don't store sensitive data
Use strong secret keys (at least 256 bits)
Set expiration times to limit token lifespan
Validate tokens on the server before trusting claims