A shared link opens a preview of the file, folder, or Space on dropbox.com, and recipients can view or download the content. Recipients don’t need to have a Dropbox account to view and download, but they’ll need an account to see the overview and use the features of a Dropbox Space.
The people you share with will be able to see the latest updates, even after the link is created. A Dropbox link never “breaks,” even if you rename or move files, folders, or Spaces in your Dropbox account.
For added security, you can also set a password, expiration date, and disable downloads for shared links. Disable a shared link at any time. If the recipient of a shared link downloads the content to their local computer and then makes changes, it won’t be updated on your Dropbox account.
Navigate to the content you want to share.
Tap … (ellipsis).
Tap Create a link. If a link was already created for this file, folder, or Space, tap Share next to Anyone with the link can view.
Select the way you'd like to share the link from the options.