How do I resize an image so that the longest size is shorter or equal to an amount?

I think that

mogrify -resize "1000>" *.jpg

resizes a bunch of jpegs so that the shorter side is 1000px if that side was longer than 1000px. What can I use to resize the jpegs so that the longer side is less than 1000px?

Thank开发者_运维知识库s!

It should keep the aspect ratio / image proportions when using a geometry string with ">", so you can just do:

mogrify -resize "1000x1000>" *.jpg

So you're explicitly limiting the image to being, at most, 1000x1000 pixels, and keeping the current aspect ratio of the image.

You could also use:

find . -type f -exec convert {} -resize "1000>" {} \; 

this might also be:

find ./*.jpg -exec convert {} -resize "1000>" {} \;