Is JWT Token Decoder free to use?

Yes, JWT Token Decoder is completely free with no limits. It works entirely in your browser with no registration required.

Is my data secure when using JWT Token Decoder?

Yes! All processing happens locally in your browser. No data is ever sent to any server, ensuring complete privacy.

Yes, once the page is loaded, this tool works completely offline without an internet connection.

Yes, the output follows industry standards and can be used in production applications.

Decode and inspect JWT tokens instantly - view headers, payloads, and claims

Instant Results

100% Private

No Registration

JWT Token

This tool decodes tokens without verification. Never trust decoded tokens for security decisions - always verify signatures server-side.

No verification needed

View all claims

Debug authentication

Check expiration times

Format: header.payload.signature (three Base64 parts)

Header contains: alg (algorithm) and typ (type)

Payload contains: claims (iss, sub, aud, exp, etc.)

Note: This decodes but does NOT verify signatures

Inspect JWT tokens during development to troubleshoot auth issues.

See user roles, permissions, and other claims embedded in tokens.

Verify token expiry times (exp claim) to diagnose session issues.

Validate token structure and payload during API development.

Format: header.payload.signature (three Base64 parts)

Your data stays in your browser

All processing happens locally. Nothing is sent to any server.