What is HMAC Generator?

Generate HMAC-SHA1/256/512 signatures with the Web Crypto API.

Is HMAC Generator free to use?

Yes — HMAC Generator is free to use, with no sign-up, no install and no account.

No — HMAC Generator runs entirely in your browser, so your text, files and results never leave your device.

No — it works in any modern browser (Chrome, Edge, Firefox, Safari) with no downloads, accounts or plugins.

What is HMAC Generator?: Generate HMAC-SHA1/256/512 signatures with the Web Crypto API.
Is HMAC Generator free to use?: Yes — HMAC Generator is free to use, with no sign-up, no install and no account.
Does HMAC Generator upload or store my data?: No — HMAC Generator runs entirely in your browser, so your text, files and results never leave your device.
Do I need to install anything to use HMAC Generator?: No — it works in any modern browser (Chrome, Edge, Firefox, Safari) with no downloads, accounts or plugins.