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JWT Decoder

Developer Tools
★ 4.9(3470 reviews)

Decode JWT tokens online instantly. View JWT header, payload, expiration and claims securely with this free JSON Web Token decoder tool.

Last updated: 2026-05-20

Free Online JWT Decoder

Use this free online jwt decoder tool directly in your browser without installing software. Fast, mobile friendly and easy to use.

JWT Decoder

Decode JSON Web Tokens instantly and inspect JWT headers, payloads, claims and expiration details securely.

JWT Token

Algorithm
HS256
Token Type
JWT
Status
Valid

JWT Header

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

JWT Payload

{
  "sub": "1234567890",
  "name": "John Doe",
  "admin": true,
  "iat": 1516239022,
  "exp": 2000000000
}

Token Details

Issued At
1/18/2018, 1:30:22 AM
Expiration
5/18/2033, 3:33:20 AM
Signature
signature

Tags

#jwt decoder#jwt token decoder#json web token#jwt parser#jwt payload viewer#jwt analyzer#developer tools#authentication tools#jwt claims decoder#token decoder

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About This Tool

About JWT Decoder

This free online JWT Decoder helps decode JSON Web Tokens instantly and inspect JWT header, payload and claims securely.

Useful for developers, authentication debugging, API integrations, OAuth workflows and token analysis.

What This Tool Supports

  • JWT token decoding
  • Header and payload parsing
  • Claim inspection
  • Expiration timestamp analysis
  • Issued-at token analysis
  • JSON formatting
  • Instant live decoding
  • Responsive UI
  • Authentication debugging
  • Developer security workflows

Frequently Asked Questions

What is a JWT token?

JWT stands for JSON Web Token, a compact token format commonly used for authentication and authorization.

Can this tool verify JWT signatures?

No. This tool decodes JWT tokens locally in the browser but does not validate signatures.

Is JWT decoding secure?

Yes. Token decoding happens locally in your browser without server-side processing.

Can I inspect token expiration?

Yes. Expiration and issued-at timestamps are automatically analyzed when available.

Is this JWT Decoder free?

Yes. This tool is completely free to use online.

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