Fileloupe for Mac: A Detailed User Guide

Fileloupe is a high-performance media viewing and management tool designed specifically for macOS. It goes beyond the system’s native Preview app, aiming to provide users with an extremely fast and smooth browsing experience, and is especially good at handling folders containing thousands of images or videos. Its core philosophy is “no import required,” operating directly on local folders, making it a powerful assistant for photographers, designers, video editors, and users who need to quickly review large amounts of media files.

1. Detailed Explanation of the Core Interface and Workspace

Fileloupe’s interface design is clean and efficient, mainly divided into the following core areas:

1. Title Bar and Toolbar: The top area of the window. The left side displays the path of the currently browsed folder, and the right side contains a series of function buttons, such as “Slideshow,” “Crop,” “Rotate,” “Info Panel,” etc., which can be customized.
2. Sidebar (Navigation Panel): Located on the left side of the window by default (can be hidden via the View menu). Contains two main tabs:
   • Folders: Displays directories on the Mac in a tree structure for quick navigation.
   • File List: Displays all files in the current folder in a list format, supports sorting by name, date, size, etc., and shows key file information.
3. Main Viewing Area: The core area in the center of the window. The display varies depending on the view mode:
   • Grid View: Displays files as thumbnails in a grid layout, allowing quick scrolling via trackpad or mouse wheel.
   • Full Screen View: A single media file fills the entire window for detailed inspection.
   • Slideshow View: Fully automatic playback mode.
4. Preview Panel: Located between the sidebar and the main viewing area or at the bottom (its position can be adjusted in View -> Preview Panel). When a file is selected, this area displays a larger preview of the file along with detailed metadata (EXIF, IPTC, etc.).
5. Status Bar: At the bottom of the window, displaying the number of files in the current folder, the number of selected files, and brief information about the file currently being viewed.

II. Complete Workflow: From Opening to Exporting

1. Launching and Opening Folders

Method 1: Drag and Drop
Simply drag a folder from Finder onto the Fileloupe icon in the Dock, or drag it into the main viewing area of an open Fileloupe window.

Method 2: Using Menus or Keyboard Shortcuts
After launching Fileloupe, click the menu bar File -> Open... or use the shortcut Command + O, then select the target folder in the dialog that appears.

Method 3: Navigate from the sidebar
In the “Folders” sidebar on the left, expand folders level by level just like using Finder, and click the target folder to load it.

2. Browsing and viewing files

1. Switch view modes:
   • Enter full-screen single-file view: Double-click any file in grid view, or select it and press the Spacebar.
   • Navigate within full-screen view: Use the Left Arrow (←) / Right Arrow (→) keys to view the previous/next image. Use the Up Arrow (↑) / Down Arrow (↓) keys to jump to the first/last image in the current list.
   • Return to grid view: Press the Esc key or press the Spacebar again.
2. Quick zoom: In full-screen view, use a two-finger pinch open/close on the trackpad, or use the shortcuts Command + Plus (+) / Command + Minus (-) to zoom. You can also hold the Option key and scroll the mouse wheel.
3. Filter files: Click the “Filter” button in the toolbar (funnel icon) to filter by file type (such as images, videos, RAW), rating, tags, and more.

3. Managing files

1. Select files:
   • Click to select a single file.
   • Command + A selects all files in the current view.
   • Hold the Command key and click to select multiple or non-contiguous items.
   • Hold down the Shift key and click to select a continuous range of files.
2. Flagging and Rating: In full-screen or grid view, use the number keys 1-5 to set a star rating for the currently selected file. Press 0 to clear the rating. Rating information is written directly into the file’s metadata.
3. Rotating Images: After selecting an image, click the rotate button in the toolbar, or use the shortcut Command + R (90 degrees clockwise).
4. Deleting Files: After selecting a file, press Command + Delete. Fileloupe will ask whether to move the file to the Trash or delete it permanently.

4. Exporting and Sharing

Fileloupe’s export features focus on quick sharing rather than deep editing output.

1. Copying Files to Finder: After selecting files, use Command + C to copy, then Command + V to paste in Finder.
2. Sending via the “Share” Menu: After selecting files, click File -> Share in the menu bar, or choose “Share” from the right-click menu. You can use the macOS share sheet to send files via Mail, Messages, AirDrop, and more.
3. Export Conversion: If you need to convert formats or adjust dimensions, choose File -> Export... or press Command + Shift + E. In the pop-up window, you can set the export format (such as JPEG or PNG), quality, dimensions, and file name, then choose the export location.

III. Advanced Tips for Common Features

1. Lightning-Fast Browsing and Cache Management

Fileloupe’s strength lies in its preview caching technology. When continuously browsing large images, it preloads the previous and next images to achieve seamless switching. You can adjust the cache size in the Advanced tab of Fileloupe -> Preferences.... If you frequently browse very large folders, increasing the cache can further improve smoothness.

2. Customizing the Workspace

Through the View menu, you can flexibly toggle the sidebar, preview panel, status bar, and toolbar to maximize screen space for the main view. You can drag your most frequently used actions (such as rating and rotating) onto the toolbar via View -> Customize Toolbar....

3. Powerful Search and Filtering

Using the search box in the upper right corner of the window, you can search not only by file name but also use specific syntax for advanced searches, for example:

type:video filters out all videos.

rating:>=3 finds files rated three stars or above.

created:2023 finds files created in 2023.

4. Customizing Slideshows

Click the slideshow button in the toolbar (or press Command + Shift + F) to start a slideshow. Before playing, you can set the interval, transition effects, whether to shuffle, and whether to loop via Play -> Slideshow Settings....

IV. Common Issues and Solutions

1. Issue: Some RAW format images cannot be displayed or display slowly.

Solution: Fileloupe relies on macOS system RAW decoding support. First, ensure the system is updated to the latest version. For newer camera models, you may need to wait for a macOS update. You can try checking “Use embedded JPEG preview when available” in Preferences -> General to prioritize embedded previews for faster browsing.

2. Issue: Keyboard shortcuts do not work in full-screen mode.

Solution: Check whether you have accidentally entered “Presentation Mode.” In full-screen view, move the mouse to the top of the screen to bring up the menu bar, and check whether “Presentation Mode” is checked in the View menu. If so, uncheck it to restore keyboard shortcut functionality.

3. Issue: The sidebar or preview panel was accidentally closed. How can I get it back?

Solution: Go to the View menu in the menu bar and click Show Navigator (Command + Option + N) and Show Preview Panel (Command + Option + P) respectively to show them again.

4. Issue: How can I compare the details of two similar images?

Solution: Fileloupe supports side-by-side comparison. First, select two images (using the Command key), then right-click and choose “Open in Split View,” or use the menu View -> Split View. After that, you can use the zoom tool to inspect the details of both images in sync.

V. Fileloupe for Mac Keyboard Shortcuts Summary