JWT Decoder

Need to decode a JWT token instantly? Our free online JWT decoder lets you decode, inspect, and analyze JSON Web Tokens directly in your browser.

View the header, payload, and signature clearly formatted — no installation required.

What This JWT Decoder Can Do

➤ Decode JWT Tokens Instantly

Paste your encoded JWT and instantly view:

• Header
• Payload
• Signature (raw)

➤ Inspect Claims

Easily read common JWT claims such as:

• sub (Subject)
• iat (Issued At)
• exp (Expiration Time)
• iss (Issuer)
• aud (Audience)

➤ Debug Authentication Issues

Quickly verify token structure and inspect claims during API authentication debugging.

➤ Secure & Browser-Based

All decoding happens locally in your browser. Tokens are not uploaded or stored.

How to Use the JWT Decoder

1. Paste your JWT token into the input field.
2. Click Decode.
3. Instantly view structured header and payload data.
4. Copy the decoded payload if needed.

Fast and developer-friendly.

Frequently Asked Questions

What is a JWT decoder?

A JWT decoder reads and displays the header and payload of a JSON Web Token.

Does this verify JWT signatures?

No, this tool decodes tokens but does not verify signatures.

Is this tool secure?

Yes. All decoding happens locally in your browser.

Is it free?

Yes, completely free.

Can I decode expired tokens?

Yes, expired tokens can still be decoded for inspection.