JWT Generator
Generate sample JWTs with common claims.
- Browser-based
- No signup
Developer
Private: processed on your device
Build JSON header and payload objects, then encode an unsigned JWT or sign with HS256 using Web Crypto. Secrets stay in your browser and are not uploaded.
Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.
1. Paste source text, code, or data into the JWT Encoder input panel. 2. Choose transform or validation options shown for JWT Encoder. 3. Run JWT Encoder or read automatic output. 4. Review errors or diff output carefully. 5. Copy the transformed result. Processing runs in your browser; inputs are not uploaded to our server.
Example: paste a small sample input into JWT Encoder, run the transform or validation, and compare the output with the before text—fix any syntax errors reported before copying.
Enter JSON header and payload objects, choose HS256 or unsigned (none), and optionally provide a secret to sign the token. Encoding uses Web Crypto in your browser; secrets are not sent to a server.
Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.
Your data is processed in your browser and is not uploaded to our server.
Yes. Utilnivo tools are free to use and do not require an account.
Utilnivo does not require an account. See the privacy note on this page for how your data is processed for this tool.
Open the tool on this page, enter your inputs, and use the on-screen controls. No account is required.
Generate sample JWTs with common claims.
Decode JWT tokens to inspect header and payload claims.
Encode and decode text with Base64.
Format, minify, and validate JSON with optional key sorting.
Compare two JSON documents and list structural differences.
Format, minify, and validate XML with readable indentation.
Page last reviewed:
Enter header and payload JSON, then click Encode JWT.