JWT Decoder
JWT Decoder is an online tool for decoding and parsing JWT (JSON Web Tokens). It allows secure verification and inspection of JWT token content without the need for installation.
Welcome to our online JWT decoder, where you can quickly and securely decode your JSON Web Tokens (JWT). JWTs are compact, secure tokens that allow parties to interact with authenticated and secure information. If you need to explore the contents of your JWT, our tool provides an easy and secure way to view headers, payloads, and signatures without sharing your secret keys.
How JWT Decoder Works
Our JWT decoder is designed for ease of use. Just paste your JWT into the text box and press 'Decode'. The tool will immediately display the decoded parts of the token, such as the header and payload. Importantly, decryption takes place locally on your device, ensuring that your data remains yours and never leaves your browser
Security Warning
Although our tool ensures that JWT decryption takes place locally and your data is not shared, it is important to exercise caution when handling JWTs. Never share your JWT if it contains sensitive information, nor store it in unsecured locations. Always use HTTPS to communicate and secure your tokens.
Frequently asked questions about JWT decode
What is JWT?
JWT (JSON Web Token) is a standardized format for creating tokens that contain information in JSON format. These tokens are often used to authenticate and secure applications and APIs. A JWT consists of three parts: a header, a payload, and a signature.
Does the tool send any data to the server?
No, our tool only decodes the JWT in the browser and no data is sent to the server. Everything is done locally in your browser.
Can I change the JWT?
Yes, you can change the contents of the JWT, but if the token is signed, the subsequent change will cause a signature verification error.