Nevermind what I said earlier. It's working perfectly for me now with the "Attach File" option (Last time I was using the "Picture" option). I should have tried that out before posting. Anyways, thanks for this awesome program.

AllMyNotes usually preserves original file format for files with .jpg, .bmp, .png, and .gif extensions. There is only one exception - when you paste image from some web-browsers, the browser ay convert it in to .bmp format to maximize compatibility. This is the case for Internet Explorer. Try other browser. Once again, AllMyNotes is doing its best to preserve original file format.

How do I keep an images original format? Whenever I insert a .jpg image into a note, it always gets turned into a .png and doubles in size. I tried some other formats .png, .bmp, and .gif. They turned into .png's as well, but mostly lowered in size (Except for one unanimated .gif that increased in size). I don't get it :P ? I'm using version 2.77 portable by the way.