Free Online TOTP Code Generator & QR Code Maker
TOTP Studio generates live, rotating Time-based One-Time Password (TOTP) codes along with scannable QR codes compatible with Google Authenticator, Authy, Microsoft Authenticator, and any RFC 6238 compliant app. Enter or randomly generate a Base32 secret, configure the algorithm (SHA-1, SHA-256, SHA-512), digit count, and time period, then scan the QR code with your authenticator app.
Built for developers and security teams who need to test two-factor authentication (2FA) flows, verify TOTP implementations, or quickly set up authenticator app entries. The tool generates standard otpauth:// URIs that encode all parameters into the QR code for one-scan setup.
Everything runs entirely in your browser — no data is sent to any server, no secrets are stored, and no account is required. The source code is open and auditable. Your secrets never leave your device.