Batch Resize images on OSX MAC

In a nutshell:

Batch Resize Images in Mac OS X

You will need to launch Preview, which is in the /Applications/ folder, but is also usually the default image editor and can be typically opened by just opening any picture. Once Preview is open, proceed:

  1. Select all the images you want resized and open them within Preview
  2. From Preview, select the images that you want to batch resize from the drawer (Command+A will select them all)
  3. Now, go to the menu labeled Tools, and then Adjust Size
  4. Enter a value for what you want the new width and height to be
  5. Next, navigate to the File menu and click “Save All” or, to save a NEW version that is resized, choose “Export Selected Images…” or “Save As”

The images should be showing smaller file sizes in Finder.

Tip: Create a backup of the folder you will be working with to preserve the originals.

Source:

http://osxdaily.com/2009/12/16/batch-resize-images-on-mac-with-preview/

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