How to Delete a Username on a Facebook Login on a Mac
All Apple computers running the Mac OS X operating system come with the Safari web browser installed on them. When you log in to a Facebook account on your Mac, Safari stores a record of your username in a special data file known as a cookie. If you do not want your Mac to remember your username when you visit the Facebook website, you can manually delete the Facebook cookies in Safari.
Things You'll Need
- Mac running OS X 10.5 or later
Click on the "Safari" icon in the dock to launch the web browser.
Open the "Safari" menu at the top of the screen and choose "Preferences."
Go to the "Security" tab at the top of the pop-up window.
Click on the button labeled "Show Cookies." A new window will open with a list of all the cookie files stored in your web browser.
Type "facebook" into the search field at the top of the window to view only the cookies related to the Facebook website.
Highlight all of the cookies with "facebook.com" listed in the "Website" field. You can highlight multiple cookies by holding down the "shift" key and clicking on each one.
Press the "Remove" button to delete the highlighted cookies.
Press "Done" to return to the "Preferences" window. Now when you visit the Facebook website, your Mac will no longer remember your username.