How to open online-only files on macOS

Updated Mar 20, 2025
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The information in this article applies to all Dropbox users.


When you make a file in your Dropbox account online-only, it won’t be automatically downloaded to your hard drive via the Dropbox desktop app.  Online-only files will still appear in your Dropbox folder in Finder, but they won’t take up any space on your device. These files will only download to your device when you open them. This allows you to save space on your device, while still being able to see what files are in your Dropbox account.
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Note: If you don’t want specific files or folders to sync to your device, but want to keep them in your Dropbox account, you can use selective sync. Learn more about selective sync.

How to open files when they’re online-only

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Notes: 

To open online-only files:

  1. Open your Dropbox folder in Finder.
  2. Double-click the file you’d like to open.
  3. The file will be downloaded within your Dropbox folder and will open in its default app.
     

To make an online-only file available offline: 

  1. Open your Dropbox folder in Finder.
  2. Right-click the file you want to make available.
  3. Click Make available offline.
  4. The file will be downloaded within your Dropbox folder.
  5. The file icon will change to a green checkmark once it’s made available offline.
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Note: 

  • If you’re not on Dropbox on File Provider, you may need to make files available offline in order to use them in some third-party applications.

The downloaded file can then be opened through any third-party application.
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