Coders

by 30Tools

JWT Token Decoder & Validator

Decode, validate, and analyze JSON Web Tokens with comprehensive security insights and real-time expiration tracking.

JWT Token Input

Paste your JWT token below. All processing happens in your browser - no data is sent to servers.

JWT Token

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About JWT Tokens

Learn about JSON Web Tokens and how to use them securely

What is a JWT?

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

Common Use Cases:

• User authentication
• API access tokens
• Information exchange
• Stateless sessions

Security Best Practices:

• Always verify signatures server-side
• Use strong signing algorithms (RS256, ES256)
• Set reasonable expiration times
• Never store sensitive data in claims
• Validate all claims before use
• Use HTTPS for token transmission