JWT Decode & Inspect

1. Paste a JWT token into the input area.
2. The header, payload, and signature are decoded instantly.
3. Check the token status to see if it is expired.
4. Click "Copy" on any section to copy its content.

What is JWT Decode?

JWT (JSON Web Token) is a compact, URL-safe token format used for securely transmitting information between parties. This tool decodes a JWT and displays its three components: the header (algorithm and type), the payload (claims and data), and the signature.

Decoding a JWT does not require a secret key — it simply Base64URL-decodes each part. This is useful for debugging authentication flows, inspecting token claims, and checking expiration times. All processing happens in your browser; no data is sent to any server.