DeveloperFree browser tool
JWT Decoder – Decode JSON Web Tokens Online
Decode JWT tokens online. View header, payload, and signature of JSON Web Tokens.
No sign-upMobile readyPrivate by default
DEV
Tool
Enter your values and get results instantly.
HOW
How to Use
- 1Paste your JWT token
- 2See decoded header and payload
- 3Verify token structure
WIN
Benefits
Client-side decoding
Instant results
Secure
Free
No data upload
FAQ
Frequently Asked Questions
What is a JWT token?
JSON Web Token – a compact, URL-safe way to transmit claims between parties. It is often used for authentication in web apps.
Can I decode a JWT safely?
Decoding is safe – it only reveals the header and payload, which are publicly readable. It does not verify the signature or expose any secret.
What information does the decoder show?
It displays the algorithm, token type, issued-at time, expiration, issuer, subject, and any custom claims – all in a clean, formatted view.
Is my token sent to your server?
No – the entire decoding process runs in your browser. Your token stays completely private.
Can I verify if a JWT is expired?
The decoder shows the "exp" claim if present, so you can check if the token has passed its expiration time.