How many times have you been in the following situation? You just spent two weeks working on a design that you’re showing to a client. He likes it, but he wants to make a couple of changes that would take a couple more hours of work. Why? You don’t know.
He doesn’t know. Nobody knows. He just thinks that adding an embedded map on the right side of the web page is cool. He really likes his own idea and wants you to make the change, and you’re left with one of two options: make the client happy, or make users happy.
Firebug — an open source web development tool extension for the Mozilla Firefox web browser — is incredibly powerful, with a wide range of super useful and practical features that would benefit any web designer or developer.
In fact, this browser extension (also available in other web browsers with limited functionality) is so useful and popular that it has browser extensions of its own.