Related Tools
What is JWT Debugger?
A JWT Debugger is a tool that allows you to decode, verify, and inspect JSON Web Tokens (JWTs). It splits the token into its three parts: Header, Payload, and Signature, making it easy to read the claims and verify the token's integrity.
Key Features
**Instant Decoding:** Paste any JWT to instantly see its decoded header and payload.
**Signature Verification:** Verify the signature of a JWT to ensure it hasn't been tampered with.
**Secure & Client-Side:** All decoding happens in your browser. Your tokens are never sent to a server.
**Visual Debugging:** Color-coded sections help you distinguish between the header, payload, and signature.
Shareable LinksShare a JWT token via link for collaborative debugging. (Limit: 5KB)
How to Use
1
Paste your JSON Web Token (JWT) into the input field.
2
The tool will automatically decode the token and display the Header and Payload.
3
Review the claims in the Payload section (e.g., expiration, user ID).
4
To verify the signature, enter your secret key (if applicable).
Frequently Asked Questions
Is it safe to paste my JWT here?
Yes, absolutely. This tool runs entirely in your browser. Your tokens are never sent to any server.
What is a JWT?
JSON Web Token (JWT) is an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object.