If you need to make the same changes to multiple files—such as changing filenames or resizing images—or archive or back up important files, you can create a custom workflow and have your Mac do the work for you.
Use Automator to combine your research photos into one PDF By request, these are updated instructions for using your Mac to combine your research photos into a PDF. For more on digital research workflows, see here, here, and here.
Script your own actions
If the task you need to automate isn’t in the list of built-in actions, you can add your own scripts, such as AppleScript and JavaScript scripts, and shell commands to your workflow. Simply add the appropriate run script action to your workflow and enter your script code or shell commands.
To browse the Automator User Guide, click Table of Contents at the top of the page.