Firefox Add-on: Use for Testing

1.Firebug :

• Firebug the most popular and powerful web development tool .
• You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page.
• It is helpful in Functional testing.

2.FireFTP:

• FireFTP is a free, secure, cross-platform FTP/SFTP client for Mozilla Firefox which provides easy and intuitive access to FTP/SFTP servers.
• Created by Mime Čuvalo as an add-on for Firefox, it was adapted to BlueGriffon.

3.iMacros :

• Automate the Firefox.
• Using iMacros  you can do repetition task like visiting the same sites every days, filling out forms, and remembering passwords by doing Record and replay.
• Using iMacros can do regression testing,functional testing & performance testing of web application.

4.Live HTTP Headers :

• It check http communications with redirects url, GET and POST data.

5.YSlow:

• YSlow analyzes web pages and why they're slow based on Yahoo!'s rules for high performance web sites.

6. LinkChecker:

•  Check the validity of links on any webpage.

 7.Font Finder:

• It allows a user to analyze the font information of any element on a page, copy any piece(s) of that information to the clipboard, and perform inline replacements to test new layouts.

8.Tamper Data:

• Tamper Data allows you to view and modify HTTP/HTTPS headers and post parameters.
• You can use it to test security of your web applications by modifying POST data and analyzing how your application will respond to those changes.

9. MeasureIT:

• It’s used in incoming measuring the element dimensions in pixels