You can use this to move your Google Authenticator accounts to other tools that support andOTP format, such as Keysmith.
Paste your otpauth-migration:// URI below and click Convert.
To get your otpauth-migration:// URI, open Google Authenticator → hamburger menu → Transfer codes → Export codes → select the codes you want to export → run the QR code through a standard scanning tool.
Runs entirely in your browser; no data is transmitted over the internet. But don't take my word for it, check the code yourself.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License only.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
The full license text is available here.