I have been working on building my own world, likely for 5e. I started working on the physical world and have been doing little snipets of land that I can later resize, and move around the final map until I am happy with it. I thought I could upload my own maps into inkarnate but I see no such option.

Are there any map editors that will let me do this? Even if it is just as a background bit that I can trace over. I have been using old topography maps of the area around my hometown and other places I have lived and am really liking the land masses I have and would rather not have to try and recreate them.

I am using a Mac, so I would prefer web based since most things do not get a mac release.