How can I use mogrify to target a specific pixel value of the largest dimension so if vertical set height to 'x' or if horizontal, set width to 'x'

Question

So I've successfully used $ mogrify -resize 3000 to accomplish setting dimension on batches of images. What this yields me is exactly that- a group of images that have a 3000px width. The issue lies in vertical images that now have a vertical value larger than I would like.

My question is: Is there a solution that assesses the largest value (height or width) and then assigns the resize to that dimension.

Thanks in advance!

Answer 1

If you give both dimensions, it will resize until one dimension matches at least. So just use -resize 3000x3000. If you don't want to resize downwards you can add the suffix < so that only smaller images will grow to 3000, and larger images will be untouched (-resize '3000x3000<'). Similarly, suffix > to not resize upwards.