Extract one time password (OTP) secrets from QR codes exported by two-factor authentication (2FA) apps such as "Google Authenticator". The exported QR codes from authentication apps can be captured by camera, read from images, or read from text files. The secrets can be exported to JSON or CSV, or printed as QR codes to console.
A lightweight PHP library for generating and validating TOTP authentication codes and QR codes compatible with Google Authenticator, Microsoft Authenticator, Authy, 1Password, Bitwarden, and other RFC 6238 authenticator apps.