JWT (JSON Web Token) is a compact, URL-safe means of representing claims between two parties. It consists of three parts: header, payload, and signature, each separated by dots.

Can I use this tool to validate token signatures?

This tool validates the token structure and format, but cannot verify the cryptographic signature as that would require the secret key used to sign the token.

Is it safe to paste my JWT tokens here?

Yes! All processing is done locally in your browser. No token data is ever sent to any server or stored anywhere.

What information can I see about my token?

You can view the decoded header (including algorithm type), payload claims (such as issuer, subject, expiration), and the signature portion of your token.

Can I check if my token is expired?

Yes, the tool automatically checks the expiration claim (exp) if present in your token and shows whether the token has expired.

JWT Token Decoder & Validator

Decode and validate JWT tokens instantly. View header, payload, and check token structure with our free online tool.

Example JWT Tokens

Click the copy button to try these tokens in the decoder above

Standard JWT Token

A valid JWT with basic claims (sub, name, iat, exp)

Valid

eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyLCJleHAiOjI1MTYyMzkwMjJ9.DXqQH5zDlKEF7q8_UC-UZKhG7mLwEVWoR_qc-tR4kBs

Custom Claims Token

JWT with additional custom claims (email, role)

Custom

eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiZW1haWwiOiJqb2huQGV4YW1wbGUuY29tIiwicm9sZSI6ImFkbWluIiwiaWF0IjoxNTE2MjM5MDIyLCJleHAiOjI1MTYyMzkwMjJ9.sxwbVPZ9N7G8SQEQLzr3ALGQBYaEXw65RY4Uf8h7oWE

Expired Token

JWT token that has already expired

Expired

eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyLCJleHAiOjE1MTYyMzk5OTl9.drt_po6bHhDG7m-QFR4v4ezl8NX7SzI2Q-DonVR6Z_Y

Invalid Token

Malformed JWT token for testing error handling

Invalid

eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkw.invalid

How to Use

Paste your JWT token into the text area above
The token will be automatically decoded
View the decoded header and payload data
Check the token's structure validation

Features

A powerful tool for working with JWT tokens, packed with helpful features.

Token Validation

Instantly validate JWT token structure and format.

JSON Parsing

View decoded header and payload data in formatted JSON.

Expiration Check

Automatically check token expiration status.

Instant Preview

Real-time decoding as you type or paste tokens.

Quick Copy

Copy decoded data or original token with one click.

Clear Function

Reset the decoder with a single click.

Responsive Design

Works perfectly on all devices and screen sizes.

Secure Processing

All processing happens locally in your browser for complete privacy.

How to Use the JWT Token Decoder & Validator

Step 1

Paste your JWT token into the input field.

Step 2

View the decoded header and payload data instantly.

Step 3

Check token expiration and validation status.

Step 4

Copy individual sections or the entire token as needed.

Frequently Asked Questions about JWT Decoder

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