How to Use Pinned Tabs in Safari for Mac OS
The latest versions of Safari Mac OS X include a pinned tab feature, which allow you to maintain a particular web sites browser tab consistently across Safari relaunching and rebooting of the Mac. Pinned Tabs kind of work like bookmarks in this sense, except that rather than having to show a bookmarks bar, you can simply visit the pinned site through the pinned tab which appears in the same tab toolbar you’d see in Safari when multiple tabs are open anyway.
The pinned tabs are subtle and not intrusive, making them a great way to keep quick access to sites you visit regularly in Safari on the Mac.