For a Finder Quick Action that works on selected files, choose based on the workflow you need to build. Start with Shortcuts when its available actions can handle the files and steps you want, especially if you also want to run the shortcut from other Mac apps or assign a keyboard shortcut. Choose Automator when its action library fits the job or you need to set explicit workflow input and output options. In either app, the Quick Action must accept file input to appear in Finder.
First check what Finder Quick Actions do
Finder Quick Actions run tasks on selected items from the Finder’s Control-click menu or Preview pane. Which actions appear depends on the file type and enabled Finder extensions. Apple’s built-in examples include creating PDFs and converting images; a custom shortcut or Automator workflow adds another option to that same Finder surface. Apple’s Finder guide
Before choosing an editor, write down three things: what you will select, what should happen to it, and whether the result should replace the selection, create new files, or simply return information. Then check whether the chosen app has actions for each step and whether their inputs and outputs line up. The presence of a Quick Action menu does not mean every task can be automated there.
Choose Shortcuts for connected actions and multiple launch points
Shortcuts builds a workflow as a sequence of actions, with one action’s output available to later actions when their input types are compatible. Its Mac guide describes actions that work with apps and content on Apple devices and internet services; the available actions and compatibility depend on what you want to do. Apple’s Shortcuts guide
To make a shortcut available in Finder, open it in the Shortcuts editor, click its details button, and select Use as Quick Action. If Finder is unavailable as an option, Apple says to add Files or Folders to the shortcut’s allowed input. To expose it in the Finder menu, go to Apple menu > System Settings > Privacy & Security > Extensions > Finder and turn it on. Then Control-click a selected file and choose Quick Actions followed by the shortcut. Apple’s instructions for running a shortcut on Mac
Shortcuts is a strong fit when the same workflow should also be reachable outside Finder: Apple documents options including the Services menu, share sheet, Dock, and a custom keyboard shortcut. Keep the distinction clear: a shortcut run from the Dock does not receive the content selected in another app as input. A Finder Quick Action is the appropriate launch point when the selected file or files need to enter the workflow. Apple’s Mac shortcut launch options
Choose Automator for its actions and workflow settings
Automator lets you select Quick Action when creating a new workflow, set the data type it receives and the app or apps that process it, then add actions from its library. Search for an action by name or category; Apple says each action performs one step, and you can reorder actions by dragging them. The available actions are the deciding factor: confirm that Automator includes the operations and file types your task requires before building the workflow. Apple’s Automator workflow guide
A Finder-specific limit matters: Apple says only Automator Quick Actions that receive files as input appear in Finder windows. In Automator, use File > New > Quick Action, set the input to files, add the suitable actions, and save. If a saved action is missing, check System Settings > Privacy & Security > Extensions > Finder and make sure it is enabled. The Finder’s available actions can also vary by selection and extension settings. Apple’s Automator Quick Action guide
Automator also has workflow types for jobs that are not Finder Quick Actions, such as Folder Actions and standalone Applications. Those may suit a different launch model, but they do not make every Automator workflow appear in Finder. Choose the Quick Action type for this task, and verify the input setting before troubleshooting the menu.
A practical decision test
Use this short test before committing to an editor:
The task starts with files selected in Finder: Both apps can create Finder Quick Actions, provided their input is configured for files.
The necessary steps are available as Shortcuts actions, and you want other launch options too: Start in Shortcuts. Set allowed input to files or folders as appropriate, enable Use as Quick Action, and enable it in Finder Extensions.
You found suitable Automator actions or need to configure the workflow’s accepted data and processing app: Start in Automator. Create a Quick Action that receives files, then save and enable it in Finder Extensions.
An essential operation is missing from the app’s actions: Neither editor can supply an undocumented action just because the workflow is called a Quick Action. Look for another supported action or tool before building around an assumption.
Run the workflow on a small, replaceable sample selection first, and check the resulting files and Finder menu entry. This is a prudent check before applying a file operation broadly; it is not a claim that either editor protects originals automatically. If you are unsure which to try first, Shortcuts is a reasonable starting point for an action sequence that combines supported app operations; Automator is a reasonable starting point when its library and input settings match the file task directly.
Sources
Perform quick actions in the Finder on Mac — Apple Support
Shortcuts User Guide for Mac — Apple Support
Run a shortcut while working on your Mac — Apple Support
Create a workflow in Automator on Mac — Apple Support
Use Quick Action workflows on Mac — Apple Support