That ubiquitous floating Admin bar at the top is really helpful in a lot of situations, but sometimes it’s better to view your website without it. For example, you might want to simulate what your site looks like to a regular user, or perhaps you just want to take a nice screenshot.
Whatever the purpose, I’ve created a handy bookmarklet for toggling the bar. Simply drag it into your Bookmarks bar and click it when you need to hide your admin bar. Click it again to show the bar.
Drag me to your Bookmarks: Toggle admin bar