20 Firefox Add-ons for Web Developers

Here are 20 extremely useful Firefox Add-ons that can help developers create websites more efficiently.

  1. Inspector Widget – Adds a toolbar button and context menus for invoking the DOM Inspector (DOMi) for either chrome or content elements.
  2. Web Developer – The Web Developer extension adds a menu and a toolbar to the browser with various web developer tools. It is designed for Firefox, Flock and Seamonkey, and will run on any platform that these browsers support including Windows, Mac OS X and Linux.
  3. IE View – Lets you load pages in IE with a single right-click, or mark certain sites to *always* load in IE. Useful for incompatible pages, or cross-browser testing.
  4. TinyURL Creator – Easily shrink any long URL or link in the page to something you can email or Twitter using the TinyUrl service with a single click in your browser.
  5. EditCSS – Stylesheet modifier in the Sidebar.
  6. View Formatted Source – Displays formatted and color-coded source and optional CSS information for each element. You can see exactly which CSS rules match for an element. The rules are displayed including file name and line number. The topmost element is that with the highest priority.
  7. Firebug – Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page.
  8. Image Download – Download All the Picture In the Page. Filter by width ,height, type. Auto Create Sub Folder ,auto rename Auto log Download Information.
  9. JavaScript Debugger – Venkman is the code name for Mozilla’s JavaScript Debugger. Venkman aims to provide a powerful JavaScript debugging environment for Mozilla based browsers.
  10. Greasemonkey – Allows you to customize the way a webpage displays using small bits of JavaScript.
  11. JSView - All browsers include a “View Source” option, but none of them offer the ability to view the source code of external files. Most websites store their javascripts and style sheets in external files and then link to them within a web page’s source code. This extension solves this problem.
  12. HTML Validator – This is a Mozilla extension that adds HTML validation inside Firefox and Mozilla. The number of errors of a HTML page is seen on the form of an icon in the status bar when browsing. The extension can validate the HTML sent by the server or the HTML in the memory (after Ajax execution). The details of the errors are seen when looking the HTML source of the page. The extension is based on Tidy and OpenSP (SGML Parser).
  13. ColorZilla – Advanced Eyedropper, ColorPicker, Page Zoomer and other colorful goodies. With ColorZilla you can get a color reading from any point in your browser, quickly adjust this color and paste it into another program. You can Zoom the page you are viewing and measure distances between any two points on the page. The built-in palette browser allows choosing colors from pre-defined color sets and saving the most used colors in custom palettes.
  14. LinkChecker – Check the validity of links on a web page.
  15. FireFTP – is a free, secure, cross-platform FTP client for Mozilla Firefox which provides easy and intuitive access to FTP servers.
  16. Codetch – Get the feel of Dreamweaver in a Firefox extension. Edit your documents right next to your web pages as you surf.
  17. YSlow – This extension analyzes web pages and tells you why they’re slow based on Yahoo’s rules for high performance web sites
  18. FireShot – This is a Firefox extension that creates screenshots of web pages. Unlike other extensions, this plug-in provides a set of editing and annotation tools, which let users quickly modify captures and insert text and graphical annotations. Such functionality will be especially useful for web designers, testers and content reviewers.
  19. Pixel Perfect – This is a Firefox/Firebug extension that allows web developers and designers to easily overlay a web composition over top of the developed HTML. By toggling the composition on and off, the developer can visually see how many pixels they are off in development.
  20. Snapper –¬† Allows users to designate an area of a web page for a focused snapshot, cutting out the additional work needed for cropping unnecessary information.

The preceeding  extensions give a glimpse of the true power of Firefox. While they are the most popular amoung web developers, they are by no means the only ones. I believe each tool suits a purpose for different people. And depending upon your needs, you will find diverse uses for these extensions.