Firebug

Plug-in for Firefox that is very handy when creating websites.

In the case that you are learning to design web pages, or if you are developing your own page, Firebug will be very useful to you. It is a powerful web development tool that integrates perfectly with the Mozilla browser, Firefox.

  Firebug is a complete for Firefox that offers the possibility to access and edit the code of any website instantly, offering an instant preview of any effect that you have made. Thus, it is an intuitive way of learning HTML, CSS and Javascript, at the same time that it offers the possibility to debug our web pages code.

  It is very easy to use. Once you have loaded the URL of the website that you want, click on the icon with the bug shape that you can see in the status bar of Firefox. Thus, you will be able to see in split screen or in an independent windows the web page you have asked for and the HTML code, as well as the CSS, Javascript and DOM code.

  Thanks to Firebug, editing and correcting errors in any web page is very easy.

  Requirements: This add-on requires Firefox 3.0 or above.