Smart Folders are basically saved searches that make it easy to gather all files that match certain criteria in a single location. Here’s how to use them: Open Finder and click the File option in the menu bar. Select New Smart Folder and specify your search criteria. For example, you can type in “jpg” and select the JPEG image file type to search for all images in this file format that are stored on your Mac. Click the Save button to save your Smart Folder to Saved Searches. You can optionally add it to the Finder sidebar.