← Back to DevKit
30s
TOTP Authenticator
TOTP · ENCODE & SECURITY
Local TOTP codes per RFC 6238 (HMAC-SHA1, refreshed every 30s) with multiple accounts and QR import; keys are stored only on this device — avoid shared computers.
Keys are stored only in this browser — do not use on shared or public computers.
Accounts
Current code
------
Based on RFC 6238, computed locally with WebCrypto HMAC-SHA1 — keys never leave the browser.
This tool runs entirely in your browser — input never leaves your device. Press Ctrl K to switch tools anytime.