17 Jun 2011 Insert jQuery: This bookmarklet is amazing if you're a firebug user. It allows you to use jquery in firebug, even when the site doesn't support it. I use it for things ranging from checking a bunch of checkboxes or checking the number of uses for a particular css class. You don't know that you're missing it until you don't have jQuery at your fingertips. (The bookmarklet is towards the middle) Url Shortening Service: This allows you to convert huge urls into really small ones. My ...