I believe that I saw somewhere that there is a 100MB limit for images in the free version. However, I don’t see a way to know how much has been used. There is a line counter (for the 500 limit). Is there such a thing for images?
There is a 10 meg limit for an upload, you would get a message if you picked an image that was larger. If the image is coming from a link I don’t think there is a size limit but it would make sense to not use too large an image from a bandwidth standpoint. 10 meg should be plenty for an image to be displayed on a mobile device.
We don’t yet have a counter for your total file upload size yet.