
tigerpeng2001
You can save scan the QR with a QR scanner to get the text of the QR and then manage it with some password manage tool, I user LInux/Mac pass (https://www.passwordstore.org/), to save the text. Later on, you can use an encoding tool, again I use pass, to generate the QR code and scan to some Authenticator.
If you store your passwords in the same storage, it (partially) defeats the purpose of 2nd factor authentication.