How to Reset Apple Safari Saved Information
For Apple’s Safari, choose the=> menu command.
Notice there is also amenu item; this is useful for eliminate stale web pages and images if the current version of a web page is not showing up.
Thedialog is shown below. Use caution here; you can’t really hurt anything, but it might be annoying to lose all your saved usernames and passwords and cookies, which are by and large a great convenience.