Is the JWT Decoder free to use?

Yes, the JWT Decoder is completely free. There is no sign-up, no account required, and no limit on how often you can use it.

Is my text private when using the JWT Decoder?

Yes, all text processing happens in your browser. Your text is not sent to any server and is not stored anywhere outside your device.

What devices does the JWT Decoder work on?

The JWT Decoder works on any device with a modern web browser — desktop, laptop, tablet, or phone. It is mobile-friendly and works offline once the page has loaded.

📝 Text & List

JWT Decoder

Decode and inspect JSON Web Tokens (JWTs). Shows header, payload and signature sections. Checks expiry. Runs in browser — token never sent anywhere.

The JWT Decoder is a free online tool that helps you decode and inspect json web tokens (jwts). shows header, payload and signature sections. checks expiry. runs in browser — token never sent anywhere It runs in your browser with no sign-up, downloads, or installation needed. All processing happens locally — your data stays on your device.

Paste a JWT token

🔒 Decoding happens entirely in your browser. Your token is never sent anywhere.

How to use the JWT Decoder

What is a JWT?

A JSON Web Token consists of three Base64-encoded parts separated by dots: the header (algorithm), the payload (claims/data) and the signature. The header and payload are readable by anyone — the signature verifies integrity. Never put sensitive data in a JWT payload.

💡 Affiliate links below. As an Amazon Associate we earn from qualifying purchases at no extra cost to you.

⭐ Top pick · Recommended on Amazon