JWT Decoder
Decode the header and payload of a JSON Web Token locally. Decoding does not verify the signature.
JWT decoding reveals content but does not verify the signature. Do not paste private or live tokens into a shared device.
What this tool does
Decode the header and payload of a JSON Web Token locally. Decoding does not verify the signature. The controls above are designed to help you complete this task in a few clear steps.
How JWT Decoder works
- Choose a file or enter the value you want to work with.
- Set the available options for the result you need.
- Run the tool, review the result, and download or copy it.
Tips and limitations
Review the result before using or sharing it, especially when it will be part of a published or business document.
Privacy and file handling
Most tools on The Tools Kit process selected files or text in your browser without sending them to our server. The AI Image Enhancer can send a selected image to a configured processing provider when enabled. Read the Privacy Policy before using that feature with personal or confidential material.
Frequently Asked Questions
What does JWT Decoder do?
Decode the header and payload of a JSON Web Token locally. Decoding does not verify the signature.
How does JWT Decoder work?
Decode the header and payload of a JSON Web Token locally. Decoding does not verify the signature. The controls above are designed to help you complete this task in a few clear steps.
Do I need an account to use it?
No account is required. Use the controls on this page and review the result before you copy or download it.
Is my information uploaded or saved?
Most tools process your input in this browser and do not send it to The Tools Kit server. Some lookups may use external providers, as described above the controls. See the Privacy Policy for details.