I have found a map online, I like to print out (see link to original here: http://collections.lib.uwm.edu/digital/collection/agdm/id/4614/).
However, it has an uncommon(?) aspect ratio, which I would like to adjust to a ratio that fits common aspect ratios, like 4:3 or quadratic (or what ever is more suitable for the aspect ratio of the map).
On a Mac, how can I convert the map (with
imagemagick?) to jpg or tiff (which ever is more lossless) to have a common aspect ratio without stretching and losing as few as possible from the map.
How can I achieve that?