What is JWT Decoder?
JWT Decoder parses and decodes JSON Web Tokens (JWTs) without verification. It displays the header, payload, and signature in a readable format. JWTs are commonly used for authentication and authorization in web applications.
Common Use Cases
Debugging
Inspect JWT contents during development and debugging.
Token Analysis
View claims, expiration, and issuer information.
Security Review
Check what data is exposed in public JWT payloads.
Learning
Understand JWT structure and how they work.
How to Use This Tool
- Paste your JWT token
- View the decoded header and payload
- Check expiration and other claims
- Verify timestamps are in expected range
Related Tools
Learn More
- RFC 7519 — JSON Web Token (JWT) The IETF specification that defines JSON Web Tokens and their claims.