When loading images and audio files, it would be really nice if we could upload a bunch at a time to the online program. In the desktop version, you would just add them to the project folder but we don't have project folders on line.
There are a couple of ways to do this. You can "drag and drop" multiple files from the file explorer onto a Lectora Online page and it will upload multiple. Or you can do "organize media" and upload a zip full of files to the media library.