I have a humongous picture and a itty bitty box, I can not resize it to fit. It is so over scanned and I have resized it, cropped it and as far as I can tell I am going to have to abort this picture because I can not simply get it into my itty bitty box. Help.
Open your image in Photoshop. Rescale it to the required pixel height and width.
File > Export > Export As > JPG. In the example below, my image is 400px X 400px. The original was 1600px X 1600px which was too big for my web layout.
If you put more emphasis on describing your issue, instead of finding cool paraphrases (humongous picture“, „itty bitty box“) for it, it would be much easier to help.
Without these itty bitty informations we definitely won’t be able to help – especially because we don’t know, how experienced you are in using Muse.