JWT Decoder

Decode JSON Web Tokens (JWT) header and payload instantly.

Paste Encoded JWT Token

Token Status:Active / Valid

Decoded Header

{
  "alg": "HS256",
  "typ": "JWT"
}

Decoded Payload

{
  "sub": "1234567890",
  "name": "John Doe",
  "role": "admin",
  "iat": 1516239022,
  "exp": 1916239022
}

Standard Claim Timestamps

Issued At (iat)

2018-01-18T01:30:22.000Z (1/18/2018, 1:30:22 AM)

Expiration (exp)

2030-09-21T16:37:02.000Z (9/21/2030, 4:37:02 PM)

Not Before (nbf)

N/A

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About JWT Decoder

Decode JSON Web Tokens (JWT) header and payload online. Pretty-printed JSON output and timestamp claim inspection. This tool operates completely in your web browser. No text inputs are ever sent to remote servers or stored in any database, ensuring 100% data privacy for code, API payloads, or confidential documents.

Client-Side Privacy Guarantee

All text transformations run inside your browser tab. Zero server logging or tracking.

100% Private & Offline Capable

Executes locally via JavaScript. Your text never leaves your device.

Instant Real-Time Results

No network latency or server waits. See outputs instantly as you type.

Frequently Asked Questions

Is it safe to paste tokens?

Yes, decoding runs 100% locally in your browser.