MacBook – can i delete “developer-old” folder

You can set your Automator application as a service instead, and then apply a keyboard shortcut against that service as follows:

In System Preferences, go to Keyboard > Keyboard Shortcuts > Services

Find the service on the list.

To the right of the service name, double-click.

Enter the desired shortcut.

1. Open finder and navigate to that folder
2. cmd + F
3. Search "in this folder"
4. Add in the search option "other"
5. When the option menu pop up, select "Pixel Height"
6. Add another "other", "Pixel Width"

Then search, and delete.