When I add images to Lectora, I typically try to ge the file size (not dimensions) as low as possible in Photoshop before importing into Lectora. However, there are times (when I'm trying to get something out the door quickly) where I will take a full size image, plunk it into Lectora, and let Lectora resize the image. I would love to see functionality added to the image properties/Property and Size tab that estimates what the file size will be after Lectora publishes the course. The file size warnings that show up when you publish kind of address this issue, but I kind of view Publishing as a final state for a course, not as an error check to run during development. I'd like to see this kind of information available during the "development" process.