Firefox without any doubt is the best web browser today. And the best part about is that you can add various functions to it to make your task whole lot easier. While using these Firefox add-on you can simply use your time in a more efficiently. Looking for the best and most useful Firefox add-on from the huge library can be a difficult task….so to make it easier for our readers today I have compiled a list of 30+ best Firefox add-on for you….so pick your favorite and use your time in more productive manner!!
1- Grease Monkey
2- Window Resizer
Window Resizer comes in handy for testing different screen sizes and monitor resolutions. It quickly and accurately resizes Firefox’s viewport so that you can test to see how your design looks in standard resolution sizes.
3- Web Developer
The Web Developer Firefox add-on is a huge suite of web design tools packed with massively useful functions that will help web designers perform tasks more efficiently. By default, it displays as a toolbar towards the top of the browser, presenting you with various menus such as CSS, Resize and Cookies.
4- Screen Grab
Taking screenshots in the browser is a common task for web designers. Screengrab is a simple tool for taking full-page or partial-page screenshots. You can copy the screenshot to your clipboard, or save it to your hard drive as an image file.
5- IMacros For Firefox
Automate Firefox. Record and replay repetitious work. If you love the Firefox web browser, but are tired of repetitive tasks like visiting the same sites every days, filling out forms, and remembering passwords, then iMacros for Firefox is the solution you’ve been dreaming of! Whatever you do with Firefox, iMacros can automate it.
6- IE Tab
Web designers are always concerned about the cross-browser compatibility of their work. IE Tab 2 is a Firefox add-on that allows you to view any web page using Internet Explorer without leaving Firefox. All you have to do is right-click on a web page, and then choose “View Page in IE Tab” in the contextual menu.
7- Color Zilla
ColorZilla is an incredibly simple extension for Firefox. If you’ve ever wanted to determine what colors are used on a web page, ColorZilla is the tool for the job. It adds an eyedropper icon to the bottom-left corner of Firefox.
8- Measure It
This Firefox add-on has a single purpose: It gives you a ruler that you can use on any web page for measuring items. Since web design critically relies on the proper sizing of design elements, this is a valuable tool to add to your collection of Firefox add-ons.
9- Fire Ftp
Another useful add-on down the list is FireFTP which allows you to manage FTP accounts and transfer files to your website directly from the browser. You can add multiple websites in FireFTP and upload files from your computer to any of your website’s directory.
10- Adblock Plus
The extension Adblock Plus for Firefox is the best and most flexible ad blocker available.
The Cooliris 3D Wall the fastest and most stunning way to browse photos and videos from the Web or your desktop. Effortlessly scroll an infinite “3D Wall” of content from Facebook, Google, YouTube, Flickr, and more.
12- Foxy Proxy Standard
Foxy Proxy is an advanced proxy management tool that completely replaces Firefox’s limited proxying capabilities. It offers more features than SwitchProxy, ProxyButton, QuickProxy, xyzproxy, ProxyTex, TorButton, etc.
13- Fire Shot
FireShot is a Firefox extension that creates screenshots of web pages (entirely or just visible part). Unlike other extensions, this plugin provides a set of editing and annotation tools, which let users quickly modify web captures and insert text annotations and graphical annotations. Such functionality will be especially useful for web designers, testers and content reviewers.
14- Font Finder
With this add-on, you can highlight any text on a page to find out CSS styling information about that highlighted block of text.
15- Grid Fox
For web designers, grid based designs are the way to go and it’s one of the most common design practices being used by websites of the like of Yahoo, Wired, The New York Times etc. Gridfox integrates into Firefox and let’s you analyze the grid base of any webpage by letting you lay the grid of your choice over the page and see if the elements conform to the grid based design.
16- Fire PHP
FirePHP enables you to log to your Firebug Console using a simple PHP method call.
17- Auto Copy
Select text and it’s automatically copied to the clipboard. Also pastes on middle click.
18- Html Validator
HTML Validator 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.
19- Autofill Forms
Autofill Forms enables you to fill out web forms with one click or a keyboard shortcut.
20- Total Validator
This extension is an all-in-one validation tool that will check HTML, links, take screenshots and do a lot more. It also performs accessibility validation (WCAG, US-508), broken link checking, spell checking (in five different languages), and take screen captures via different web browsers and operating systems to see how your web pages look.
21- Page Diff
Page Diff is an add-on that helps web developers and designers see HTML source code differences between web pages. This is helpful for finding code irregularities or differences that will enable you to debug rendering issues.
22- Live Http Headers
For dynamic webpages, web developers often have to inspect headers of the page and usually they do it manually by inspecting the source of the returned pages. With Live HTTP Headers Firefox extension, you can view HTTP Headers as they come in while the page is loading.
23- Java Script Debugger
24- Im Translator
Im Translator includes Online Translator in 1640 language combinations. Virtual Keyboard for more than 40 languages; Russian Decoder Interface localization in 11 languages; other multilingual tools.
25- Palette Grabber
This add-on will build color themes that are exportable to popular graphic-editing software such as Photoshop, Paint Shop Pro, GIMP, Fireworks, and Paint.NET of the web page you’re currently viewing.
26- Link Checker
Check HTML documents recursively for broken links. Supported link types are http, https, ftp, mailto, news, nntp, gopher, telnet and file.
27- Fire Bug
28- Edit Cookies
Update, add, or delete cookies live. No more page refreshes or editing text files. Edit Cookies allows you to change cookies from a convenient screen. Great for web site testing, particularly security tests!
29- Flag Fox
Flagfox is an extension that displays a flag icon indicating the current webserver’s physical location. Knowing where you’re connected to adds an extra layer of awareness to your browsing and can be useful to indicate the native languages and legal jurisdictions that may apply. Additional information can be obtained via a multitude of external lookups and users can add their own custom actions. All actions can be added to the flag icon’s context menu and set to icon click or keyboard shortcuts for quick access.
30- Dust Me Selectors
Coming last on the list does not mean it’s a useless Add-On. In fact Dust-Me Selectors is pretty essential for Design Usability and Optimization jobs where you have to extract unused CSS selectors on your pages so that the CSS elements that are taking idle load time are removed from the pages.
Stylish lets you easily manage user styles. Add, delete, enable, disable, and organize with a few clicks of a mouse, no code to edit, no obscure configuration to find. Stylish’s companion website, userstyles.org, hosts tens of thousands of user styles made by other Stylish users that you can try.