How-to: Resize a bunch of photos on Mac

Whenever I work on a photography project, at some point I find myself needing to resize all the photo images to reduce their file size. My raw photos are typically 50-80MB in size, which is way too large for uploading to our website portfolio (it would take forever to load on a mobile device).

The fastest way I've found to bulk resize the images on my Mac is to use this sips command in the Terminal app from the directory containing all of my photos:

$ sips -Z 1920 *.jpg

This resizes all of my files ending in .jpg to 1920 pixels on the longest edge, which yields a roughly 1080p Full HD image.

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