About this utility
How to use JWT HS256 Signer
Create an HS256 JWT from a JSON payload and a local secret.
What to provide
Use a JSON object for the token payload.
Secrets are used only for the current run and are never stored or transmitted.
- Paste, type, or drag and drop a supported text file into the input area.
- Place the second value in the adjacent panel. Sensitive fields are masked by default.
- Review the input and the clearly labeled output behavior.
- Select “Run tool” or press Ctrl/Command + Enter, then copy, download, or move the result back into the first input for another pass.
Use “Swap inputs” to reverse the comparison without copying either value.
What the result means
A compact HS256 JWT.
Privacy and safety
This utility is loaded as browser code and processes your input only in this tab. OmniCastConverter has no upload endpoint and never stores your content, filenames, tokens, or secrets. Generated markup and code are shown as inert text and are never executed.
Limitations
- HS256 uses one shared secret; production key management and claim policy remain your responsibility.
Try the included example
Select “Load example” at any time to restore this tested sample.
{"sub":"user-7","role":"admin"}correct horse battery staple