My 5 Most Valuable FireFox Add-Ons
I use Firefox and a couple of powerful add-ons that make my life as a website owner easier.
These are my five most valuable add-ons:
1. Webdeveloper
Absolutely stunning add-on. Among a lot of other things, this add-on allows you to:
test CSS and HTML ‘on the fly’ without really changing anything,
outline frames, headings, links, tables and block elements
handle [...]
