JWT Token Decoder
Decode JWT tokens to view header, payload, and signature. No server validation needed.
Local Processing
Files are not uploaded to any server. All operations are performed in your browser.
How to Use
- 1
Paste your JWT token into the input area.
- 2
Click 'Decode' to parse the token.
- 3
View header, payload, and signature sections.
- 4
Check expiration and other claims.
- 5
Copy decoded JSON if needed.
Use Cases
Authentication
Verify token contents and expiration claims during authentication flow.
Development
Decode JWT tokens during development to understand token structure.
API Debugging
Inspect JWT tokens from API responses for debugging authentication issues.
Related Tools
FAQ
What is a JWT token?▾
JWT (JSON Web Token) is a compact, URL-safe means of representing claims. It consists of header, payload, and signature parts.
Does this tool validate the token?▾
No, this tool only decodes the token to show its contents. It does not verify the signature or validate claims.