Instead of having to click a second button to convert an image, you can set up one-click saving in the add-on options -- check out the following screenshot -- by changing the "Plain click" action to whichever quality of JPEG you prefer:
Add-ons can only auto-save within your default downloads folder. So far, I've created a couple options for how to set up the folder path, which are also in the add-on options. At some point, I do want to add more possibilities there.
