OS X Yosemite: Share on Twitter, Facebook, LinkedIn, and more
You’ll see the Share button in the Finder and in many Mac apps. In the Finder, the Share button gives you an easy way to share all kinds of documents and other files—instantly.
Share items from a Finder window
In a Finder window, select one or more items, then click the Share button in the toolbar.
If the item is on the desktop, Control-click it, then choose Share from the shortcut menu.
Choose how you want to share from the options listed in the Share menu.
The options listed—including Email, Messages, Facebook, Twitter, and others—depend on the type of item you’re sharing and how you set up Extensions preferences, as described below.
Provide any additional information needed for the sharing method you chose. For example, if you share a photo using Twitter, you can type some text describing the photo.
Customize the Share menu
You can choose which items appear in the Share menu by using Extensions preferences. Your choices also affect what appears in the Social widget in Today view in Notification Center. For more information, see See your day at a glance.
Click the Share button , then choose More from the Share menu to open Extensions preferences.
You can also choose Apple menu > System Preferences, then click Extensions.
Click Share Menu on the left, then select the items you want in the Share menu and deselect the items you don’t want.
If an item is selected in Extensions preferences, but you don’t see it in an app’s Share menu, then you can’t use that item to share in that particular app. For example you can’t use AirDrop in Mail or Safari.
You can use the Share button in most Mac apps, including Safari, Notes, Reminders, and Photo Booth. You can tweet your favorite webpage links from Safari, share notes via Mail and Messages, and post photos and videos to Flickr or Vimeo. Or select any of these, or another item, and use AirDrop to share it with others near you.