JWT Token

JWT Token Decoder Online - JWT.io Alternative

This tool is a free alternative to jwt.io, providing complete JWT Token online decoding functionality. No registration required, quickly decode jwt tokens and view Header, Payload, and Signature content.

What is JWT Token?

JWT (JSON Web Token) is an open standard (RFC 7519) for securely transmitting information between parties. A JWT Token consists of three parts:

• Header: Contains token type and signing algorithm (e.g., HS256, RS256)
• Payload: Contains claims (data to be transmitted, such as user ID, expiration time)
• Signature: Used to verify token integrity and authenticity

JWT Decode Online Features

• Quick Decode: Paste JWT token to instantly decode and view complete content
• JWT Debugger: Similar to jwt.io debugging functionality, real-time token structure parsing
• Formatted Display: Beautified JSON format for clear Header and Payload presentation
• Expiration Check: Automatically detect if token is expired (based on exp field)
• Completely Free: No registration, no usage limits

JWT Token Use Cases

• API Development: Verify JWT tokens generated by backend are correct
• Authentication: Check validity and content of user authentication tokens
• Token Analysis: Analyze JWT token structure from third-party services
• Security Audit: Check if tokens contain sensitive information
• Learning: Understand JWT token encoding format and structure

Why Choose This Tool?

• JWT.io Alternative: Provides same core functionality as jwt.io
• Faster Speed: Better access speed in some regions
• Privacy Protection: All decoding operations performed locally in browser, no server upload
• Clean Interface: Focused on JWT decode functionality, simpler operation

Security Note: This tool only decodes JWT tokens locally in your browser and does not upload data to servers. However, note that JWT tokens are Base64 encoded, not encrypted - anyone can decode and view the content. Do not store sensitive information (passwords, credit card numbers, etc.) in JWTs.