11 Essential Firefox Extensions for Web Designers and Developers


There was a time when Mozilla Firefox was the most favorite browser of web  developers. Then Google Chrome came along, knocked out Firefox and Internet Explorer, and took the top spot.

Still, Google Chrome is the most used browser in the world but we web designers have special needs. We need speedy browsers because we have to work with loads of tabs and we are almost always short of ram. We also have other special needs, such as which browser works with HTML5.

Vessel conducted a browser performance test and guess what, Firefox turned out as a browser that can do nothing wrong.

If you have loads of ram in your computer, then perhaps Firefox wouldn’t be a great advantage to you but I always felt that the interface of FF is more techie-friendly. And that’s why I never stopped using Firefox. I’m sure there are many web designers and developers who still use Firefox as their primary browser, and this post is for all of them.

This is a collection of 11 free Firefox extensions for web designers and developers. Almost all of these extensions are five star rated and highly trusted by programmers and designers all over the world.

But before we go onto the extensions, here’s the test I was talking about.

Why do I care about Firefox?

My laptop broke over the weekend and I was writing an article at that time. I wanted to continue because momentum is crucial in writing… what to do? I just decided to use dad’s old desktop computer. Oh boy, there goes my anger management.

I barely opened Designzzz and it started getting held. It became painfully slow. I realized that there wasn’t enough ram. Where did the ram go?

Where did the ram go

Soon I realized that 3GB ram just wasn’t enough because Google Chrome alone was taking 1.2 GBs of ram. I installed Firefox and the things got better. That’s the moment when I decided I had to make this post. Because ram is important. In there was line in the programmer pick up lines that said: I’ll always have ram for you.

So I decided that ram is important. Many web designers have to use Firefox because of its low ram consumption so I should help them work even better within their resources.

Mozilla Firefox Extensions for Web Designers and Developers

There was a time when we couldn’t imagine Firefox without Firebug but now local inspect element has become so advanced that I have decided not to include it. But have I excluded it? I just featured it, didn’t I?

Open with Photoshop

This is a pretty cool extension. If you have Photoshop installed in your computer, only then this extension will work.
It is a new companion for web and graphic designers to open up any web image with Adobe Photoshop via a single and quick mouse click.

Splash Screen

This first ever splash screen (loading screen) of Adobe Photoshop.

Rainbow Color Tools

How often has it happened to you that you opened a website and loved the color scheme? How you wished you could copy…. I mean take inspiration from this color scheme. Now it is possible.

Rainbow Color Scheme Firefox Extensions

Nimbus Screen Capture

This is a screen capture and annotation tool. Simple and lightweight.



If you are a web designer, the chances are that you’re already using it. If, however you are not then you should.
It’s a pretty simple utility. It lets you measure surface area on an opened web page. It’s one of the most essential tools for web designers.

firefox utility for web designers

IE Tab V2

It’s a good practice to test websites on older versions Internet Explorer as well that’s because many users use only IE. If you’d like to test your websites in IE, then you just install this extension and you’ll never have to leave Firefox at all.

IE Tab


Web Developer

It is a toolbar. I know we hate toolbars but if there was one toolbar that I’d be okay to keep, it would be this one. The Web Developer extension adds a menu and a toolbar with various web developer tools.

firefox toolbar

Search Status

This is one of the best tools for on-page SEO information. It is a powerful extensions but there’s only one problem. It displays Display the Google PageRank, Alexa rank, Compete ranking and mozRank. Also, keyword density analyzer, keyword/nofollow highlighting, backward/related links, Alexa info and more.

Note: there’s one problem. When you install it, it doesn’t display anywhere because its default position was status bar which has been removed from Firefox. So here’s what I do.

I go to options and place it next to tabs.




Tabs Bar Preview


This extension can simplify the rule to just specify the URI and Content type and can enable/disable each rule separately.



This is basically a search extension, or a private search extension but  I find this app amazingly useful for searching pictures. Of course, it’s main feature of web search is also pretty awesome. I think a techie should have this extension.


Destroy the Web

Let’s end the post with something humorous for the web designers. This is a shooting game for developers.
Usually such games sound a lot of fun but never live up to the expectations. However, this one does.

Destroy the Web

That’s it. That’s all the extensions I had for you today. If you use any extension that you find useful, please share with your fellow readers by posting a comment below. Thanks.

Further Related Readings

  1. Dzinepress December 7, 2010 at 7:04 am

    helpful for developers.

  2. Hermitbiker December 7, 2010 at 3:38 pm

    ….. some good tips and even better utilities for Firefox to help web de4signers and developers thanks to “Designzzz.com” !!

  3. LKJ December 10, 2010 at 7:45 am

    It would help if you could write more details about each of these utilities. After all, their functions seem quite essential. Web developers would find great use for these applications.

    I have been a Firefox user for many years, and despite the arrival of other web browsers, I find Mozilla’s interface quite easy to use. It seldom crashes, and its security feature works fine with me.

    I installed the Search Status. The lower left side of the screen shows the page rank of every website I checked from Alexa. This information would be helpful for putting ads at the right website.

    I still have to check the other utilities. Thanks for writing about these.

  4. Tayyab December 14, 2010 at 11:43 pm

    Thanks for appreciating this post.
    We are soon launching a new site completely for SEO and web/blog development related issues.
    This site is still being testing, but as soon as we launch it, you’ll see a notification at Designzzz. So keep checking back.

  5. Bryan October 28, 2015 at 5:15 pm

    The built-in developer tools is good enough. I don’t need to use Web Developer extension.

    1. Tayyub October 30, 2015 at 10:02 pm

      Indeed, Firefox’s own Inspect Element and Developer Toolset are pretty powerful.

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