You may enter a QR code image that contains your rolling two factor TOTP code information by importing the image directly into the extension.
Copy and paste and image directly into the extension
Copy and paste an image into the secret textfield of the Add Entry Dialog Box
Use the "Scan from Page" menu option to scan the image directly from the webpage.
Drag and Drop the image directly into the extension.
Scan from webpage only works on secure websites. Some websites will actively block this feature and there is no attempt by 2! Authenticator to circumvent this.
Some QR images and image formats are not supported.