Local developer utility

HMAC Generator

Generate HMAC-SHA-256, SHA-384, or SHA-512 using a local secret. Your input stays in your browser while you work.

HMAC Generator🔒 Processed locally

How to use HMAC Generator

Complete the labeled fields above, choose an action, and inspect the result before copying or downloading it.

Processing runs locally in this browser. No input is uploaded or sent to a conversion service.