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JWT Calculator
A free online tool to generate, decode, and verify JSON Web Tokens (JWT), ideal for developers, testers, and security analysts needing quick JWT management.
Check It Yourself
About This Tool
Our JWT Calculator is a powerful, easy-to-use online tool designed for developers, security professionals, and QA testers. It enables users to generate, decode, and verify JSON Web Tokens quickly without installing software.
The tool supports creating tokens with custom payloads, secret keys, and algorithm choices, making it suitable for testing security configurations, debugging authentication issues, or learning about JWT structure. Users can also decode tokens to view detailed claims and headers, aiding in troubleshooting and understanding JWT contents.
Designed with security in mind, the calculator supports common algorithms like HS256, RS256, and HS512, ensuring broad applicability across various security protocols. An intuitive interface guides users step-by-step, with real-time validation, error handling, and options to copy or download results for further use.
Whether you're developing a new API, auditing existing security measures, or exploring JWTs for educational purposes, this tool provides a fast, reliable, and secure environment. It emphasizes accessibility, responsiveness, and user control, making JWT management straightforward for professionals and enthusiasts alike.
How to Use
1. Enter your secret key or private key in the input field.
2. Provide the payload data in JSON format, or leave it blank to generate a blank token.
3. Select your preferred signing algorithm from the dropdown menu.
4. Click 'Generate' to produce the JWT token.
5. To decode or verify an existing token, paste it into the designated field and click 'Decode/Verify.'
6. View the detailed header, payload, and verification result. Use options to copy or download as needed.
7. Use toggle options for advanced features or to switch modes.
FAQs/Additional Resources
Find Quick Answers
Can I generate JWTs with custom claims?
Does this tool support RS256 or only symmetric algorithms?
Is my data secure when using this online JWT calculator?
Can I verify tokens issued elsewhere?
Does the tool support token expiration or other claims?
User Reviews
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John Doe
CEO of Company
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John Doe
CEO of Company
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John Doe
CEO of Company
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
John Doe
CEO of Company
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
John Doe
CEO of Company
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
John Doe
CEO of Company
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
John Doe
CEO of Company
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
John Doe
CEO of Company
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
John Doe
CEO of Company
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
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