This is how to quickly batch resize images using the built-in Automator app on a Mac. It can also change filenames, and do some other neat tricks too!
Summary: You can batch resize images using Automator on Mac by creating a custom workflow. Set it to resize multiple images at once, saving time and ensuring consistency across your files.
As an efficiency guru, I’m here for anything that can help make digital processes easier or faster*, so I can spend my time on the juicy stuff. Enter… Automator!
Automator is a nifty little app for running workflows on your Mac, including:
- Workflows within the Automator app
- Workflows run by other applications
- ‘Quick actions‘, added to Finder windows, the Touch Bar or Services menu
- Print plugins, within the printing process
- Folder actions, within Finder
- Workflows that are triggered by a calendar event
- Workflows within the Image Capture app
- Workflows that run when dictation is used
*See related: How to get the best out of Siri, for some handy voice commands.
Batch resize images
This is the Automator feature I use the most, and in the category of ‘things I feel like not everyone would know unless someone else has told them’ so here tis!
In this video (7min), I show you how I use Automator to resize and rename a batch of images:
Here’s what’s covered:
0:15 What is the Automator app
0:23 What it can do
0:50 Launch the app
1:09 Setup a new ‘automation’ workflow
4:03 Run the new workflow
4:29 Review the newly created images
5:00 Save as reusable workflow
And here’s what it looks like in the app:
The steps used for this workflow are:
- Ask for Finder items (allow multiple)
- Copy Finder items
- Scale images to size (eg 500 pixels)
- Rename Finder items: Add text (eg. ‘_small500x’ after name)
You may not need it often, but when you do it can save hours.
Happy Automator-ing!
