Batch Resizing Photos without Photoshop

I’m sure this is a common problem. A client has many photos that need to be uploaded somewhere but they only have extremely high resolution images.

You can use Photoshop to resize a bunch of photos using actions and what not, but you don’t want to tell your client to buy Photoshop just for that.

The solution: Preview.app

• Fire up Preview
• Select all your photos (open up the folder, press ⌘+A)
• Drag them into the Preview dock app. They should all open up in the sidebar.
• Again, use ⌘+A to select all the photos.
• Go to Tools > Adjust Size...
• Choose the size you’d like and click OK
• Go to File > Export Selected Images...
• Choose the folder you want to save the resized photos to and click Choose
• You’re done