Paste-first
Crypto
ready

HMAC Generator

Compute HMAC digests locally from a message and secret key.

Algorithm
HMAC-SHA
Data
Secret stays in this browser
Output
Digest only
Sensitive

What HMAC Generator does

local-first

HMAC Generator calculates keyed message digests locally with SHA-1, SHA-256, SHA-384, and SHA-512. Paste a payload and secret key to verify API signatures, webhook examples, and integration documentation without exposing secrets.