How do I start a new blank image page in Preview?
This is a workaround I use that suffices since I rarely use Preview, so there may be better options than this.

Typically, when creating a new image in image editing software you'll be prompted for things such as resolution, background, etc. So I've created a bunch of default images I keep stored in a folder with descriptive filenames such as:


500x500 transparent image
500x500 white image
500x1000 transparent image
and so on


On the rare occasion I have to start from scratch using Preview, I just open the image I need and do a Save As... (hold down the option as you click on the File menu, our just use the optionshiftcommandS keyboard shortcut) and I'm good to go.