Pure offline single HTML5 for viewing the QR Codes for each service in backup files exported from the 2FAS Authenticator app. 2FAS Backup Viewer has no dependencies as qrcode.js is already embedded.
This application is neither affiliated with Two Factor Authentication Service, Inc. nor 2FAS.
Just open it locally with modern browser, and browse to the backup file (.2fas) to show the QR codes. Oh, it's also printer-friendly. You can print out the codes for paper backup.
Chrome, Edge, Firefox, Opera, Android, ETC. Decryption is not support with Safari and Mobile Safari.