1. Enter your details
Fill in the fields relevant to your task. Required information is checked before processing.
Back
Decode token claims locally and optionally verify supported signatures.
Enter your details
Inputs are processed in your browser unless a tool explicitly opens a link.
Signature verification currently supports HS256, HS384 and HS512 when you provide the matching secret. Other algorithms are decoded for inspection only.
What this tool does
Decode token claims locally and optionally verify supported signatures. Use the controls above to enter your information, review the result, then copy or download it. This tool works in your browser and does not require an account.
2. Generate the result
Select Generate or Process. Any validation issue appears above the action controls.
3. Copy or download
Review the output, copy it to your clipboard or download it as a local file.
Example
Try a small sample first. Check the generated result against your intended destination or provider requirements before sharing or using it in production.
Frequently asked questions
How should I use this result?
Review the generated result against the requirements of the service or provider where you plan to use it.
Does this tool send a message or API request?
No message or API request is sent automatically. Any external action requires an explicit user click.