Tool Information
Our JWT Decoder is an essential tool for developers who work with authentication and authorization systems. It allows you to decode JSON Web Tokens (JWT) to inspect their payload and header information. JWTs are a popular way to securely transmit information between parties, but they are encoded and can be difficult to inspect manually. Our decoder makes it easy to see the contents of a JWT, so you can debug your authentication system and ensure that your tokens are being generated correctly. The tool is designed to be fast and accurate, and it can decode any valid JWT. It provides you with a clear and readable view of the token's header, payload, and signature. This is invaluable for developers who need to verify the contents of a token, such as the user's permissions or the token's expiration date. By using our decoder, you can ensure that your authentication system is secure and that your users are only able to access the resources that they are authorized to. Our JWT Decoder is a must-have tool for any developer who works with modern authentication systems. It is a simple yet powerful tool that can save you a significant amount of time and effort when you are debugging your code. By using our decoder, you can write more secure and reliable applications, and you can ensure that your users' data is protected.
JWT Decoder Online
Decode JSON Web Tokens (JWT) and inspect their header and payload instantly. This tool works entirely in your browser for privacy and security.
How to Use the JWT Decoder
- Paste your JWT into the input editor
- Click the "Decode" button
- View the decoded header and payload in JSON format
- Copy results using the copy buttons
💡 Note: This tool only decodes JWT tokens. It does not verify the signature or check validity. Always validate tokens securely in your backend.
What is a JWT Decoder?
A JWT (JSON Web Token) Decoder is a tool that breaks down a JWT into its three constituent parts: the header, the payload, and the signature. It then decodes the header and payload from Base64Url format into readable JSON, allowing you to inspect the information they contain.
Why Use Our JWT Decoder?
- Debugging: To quickly inspect the claims and metadata within a JWT during development to ensure they are correct.
- Learning: To understand the structure of a JWT and see what information is typically stored in the header and payload.
- Verification: To manually check the contents of a token before performing signature validation.
- Convenience: To have a simple, client-side tool for decoding JWTs without sending them to a server.
🚀 Explore More Free Developer Tools
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