Note: If you are using Safari 12+, you will need to install Options from the official Apple extensions site.
Note: Minimum requirement is Safari 5.1.
Note: Safari 7 and greater require you to not have Block cookies and other website data set to Always.
Note: As great a browser as Safari is, all versions before Safari 9 have certain browser limitations and are not as capable at things like blocking ads. Please make sure to upgrade to at least OSX 10.11 and Safari 9 to block ads like Chrome, Firefox, and Opera.
Depending on your settings and your version of Safari, you may need to find and open the Options download in your Downloads folder.
Install: When you see something similar to these:
you must select the “Trust” or “Install” button.
Uninstall and Update: please see the Safari section of the manual.