Developer Tools
HMAC Generator
About HMAC Generator
Compute HMAC-SHA256 signatures in your browser. Sign messages with a secret key — no server upload.
hmacsha256signaturecrypto
Frequently asked questions
- Is my data sent to a server?
- No. This tool runs entirely in your browser. Your data never leaves your browser.
- What is HMAC used for?
- HMAC proves a message was signed with a shared secret. Common uses include API request signing, webhook verification, and JWT-like integrity checks.
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