On the appearing options on top, click Share link (the one which two chain links as an icon).Note that you be careful not to click on the title of the file or folder itself as it will open the contents of the folder, or execute the file. On your Dropbox account online, click on the row of the file or folder that which you want to share link to.Making a file or folder available for the public is as easy as 1-2-3. This means that if you are worried about sharing files to the public, you can still do it even without a special folder for the feature all you have to do is share the link and the recipient will enjoy the content. It sounded nice, of course, but Dropbox removed the feature, and rather, made its essential function available virtually anywhere in Dropbox-in your account, most especially. The Public folder’s design was to help users share files publicly by simply dragging or moving these files to that folder, and those files will get public links that they can share.

We’ve come across Dropbox giving users a Public folder by default, but this was not continued anymore since the 4th of October, 2012.

How to share dropbox link