If I have original photos of varying sizes in both orientations (portrait and landscape) how can I batch process them to a smaller size without cropping and retaining their aspect ratio?
e.g. say I have some portrait-oriented images
600×800
768×1024
1200×1600
and some landscape-oriented images
1600×900
800×600
1024×768
How can I bulk resize them to all be 250px on their longer side (letting the program figure out what the shorter side’s px length should be)?