how to resize a batch of images using preview on osx

this wasnt going to be a post, but I needed to resize a bunch of images on my mac, and figured this out, so I thought id share it…

  • open preview
  • goto preferences
  • tick ‘open all files in the same window’
  • drag the folder with your images into preview
  • select them all (click in sidebar, cmd+A)
  • goto tools -> adjust size
  • type in the new size
  • goto file -> save all

it will now save all the files over the originals, so watch out if you need to keep the originals, make a copy folder first.

now I can go and resize all the images for my site so they arent so huge =)