JWT Decoder
Decode and inspect JSON Web Tokens
JWT Token Input
Paste your JWT token to decode
Token Information
Decoded JWT details
Decoded token information will appear here...
About JWT
What is JWT?
JSON Web Token (JWT) is an open standard (RFC 7519) for securely transmitting information between parties as a JSON object. JWTs are commonly used for authentication and information exchange in web applications.
Common Use Cases
- User authentication and authorization
- Single Sign-On (SSO)
- API authentication
- Information exchange between services
- Stateless session management
Decode JSON Web Tokens (JWT) to inspect their header, payload, and signature. Paste a JWT string and see the decoded JSON contents including claims like issuer, expiration, subject, and custom fields. Essential for debugging authentication and API authorization.
Key Features
- ✓Decode JWT header and payload
- ✓Display all standard and custom claims
- ✓Expiration time check
- ✓Signature algorithm display
- ✓Formatted JSON output for each section
How to JWT Decoder Online
- 1
Paste JWT token
Enter the JWT string (eyJ...).
- 2
View decoded contents
Header and payload are shown as formatted JSON.
- 3
Inspect claims
Review expiration, issuer, and custom claims.
Common Use Cases
- •Debugging JWT-based authentication flows
- •Inspecting access token claims and permissions
- •Checking token expiration times
- •Verifying JWT payload during API development
Frequently Asked Questions
Does it verify the JWT signature?▼
This tool decodes and displays JWT contents. Signature verification requires the secret key or public key, which is not performed here for security reasons.
Is it safe to paste my JWT here?▼
Processing is done entirely in your browser. The token is never sent to a server. However, avoid pasting production tokens on shared or public computers.