Freeman

I use a few... I have recently installed "Operator" which checks the web page for semantic content. I use it to check (and debug) microformat markup.

I would like... an add-on that gave me the option to "Print without Headers and Footers". Without having to turn them all off, print, and turn them back on again.

How about you ?

Pitchoune

I'm using:

• AdBlock
• Add N Edit Cookies (it's for Firefox 2 but I edited it to work for all 2.x - 3.x Firefox versions)
• DownloadHelper
• Echofon
• Firebug (essential!)
• PDF plugin
• HTML Validator
• Links and Forms (same as Add N Cookies about Firefox 2)
• Page Speed
• Quick Locale Switcher
• Rikaichan (and adequate dictionnaries)
• User Agent Switcher
• Web Developer
• WOT
• YSlow

Ricks937

If you use firefox and dont use adblock, you fail. ; ) (otherwise you should use opera!)

jyotilinkbuilde

yes i am using [B]Firefox add-ons
flagfox
searchstatus
showip
and some other too......

Evil

I use AdBlock and a few add-ons for uploading images.