Find-and-Replace is an invaluable feature that most text-editors provide. Unfortunately while using Firefox for editing tasks, there is no such native alternative. But now there is FoxReplace, a Firefox extension, which adds find-and-replace functionality not just to text boxes and text areas, but also to entire web pages.
The simplest way to use this extension is to press Shift+F2, and enter the search string and replace string.
There are other advanced features like substitution lists, auto replace on page load and replacing URLs or images. Thanks Lifehacker
Find this article at: http://www.labnol.org/software/browsers/find-and-replace-for-firefox/5820/
Tags: editing, firefox, Search, Tools, Web Browsers
