Is there anything like Firebug that you can use within Google Chrome?
Essential features I would like:
Firebug Lite supports to inspect HTML elements, computed CSS style, and a lot more. Since it's pure JavaScript, it works in many different browsers. Just include the script in your source, or add the bookmarklet to your bookmark bar to include it on any page with a single click.
http://getfirebug.com/lite.html