Old Faithful Rated 5 out of 5 stars

I have been developing websites in dozens of languages over the years and I find myself coming back to the Web Developer extension time and time again. Truly a must have in my toolbox.

This review is for a previous version of the add-on (1.1.9.1-signed). 

Rated 4 out of 5 stars

There is no competition, full featured web developer toolbar, the only toolbar for testing you will ever need! Very useful to details testing and debug CSS, HTML, JS, you named it. Go ahead try it, I dare you.

This review is for a previous version of the add-on (1.1.9.1-signed). 

Rated 5 out of 5 stars

This is the best tool for web developers and designers.
All on one place, like color info, ruler, cookies, and lots of other info.
Thanks to the developer for developing this addon.

This review is for a previous version of the add-on (1.1.9.1-signed). 

simple and the best kit Rated 5 out of 5 stars

This addon was very usefull for me to find bugs in css,html and javascipt pages.......so web designer.if ur looking for
best developer kit...then you are viewing it and reading its review

This review is for a previous version of the add-on (1.1.9.1-signed). 

Simply the best for developers Rated 4 out of 5 stars

I use this add-on almost every day and repeatedly. It is the best to identify javascript errors quickly and effortlessly. It also has a ton of features I still discover. Great job!

This review is for a previous version of the add-on (1.1.9.1-signed). 

Rated 5 out of 5 stars

A must-have for any web developer. Easy to use and full of useful functionalities, I can't work without it anymore. I strongly recommend it!

This review is for a previous version of the add-on (1.1.9.1-signed). 

Rated 5 out of 5 stars

Uso o Web Developer há três anos e não consigo mais trabalhar sem ele. É de longe a melhor extensão para desenvolvedores web que conheço, em mais de seis anos de experiência.

This review is for a previous version of the add-on (1.1.9.1-signed). 

Rated 5 out of 5 stars

The web developer toolbar is absolutely essential for me. It helped me writing my diploma thesis, which was about accessibility and WCAG1 and 2. It saves a lot of time in my everyday work as a web developer. And finally it was very helpful the last ten years when I was teaching web design. I really miss it when I open a browser where it is not available.

This review is for a previous version of the add-on (1.1.9.1-signed). 

Rated 5 out of 5 stars

I love the web developer toolbar, is super useful to me when i teach web development with this tool and Firefox web inspector, boths makes me so easy explain html and css in classroom.

This review is for a previous version of the add-on (1.1.9.1-signed). 

Rated 5 out of 5 stars

Absolutely Must for every web developer.

This review is for a previous version of the add-on (1.1.9.1-signed). 

visit/unvisit links produces an error Rated 4 out of 5 stars

in Fx13, WD1.1.9 clicking the visit/unvisit link under miscellaneous produces the error:

Timestamp: 5/26/2012 7:24:55 PM
Error: Components.classes['@mozilla.org/browser/global-history;1'] is undefined
Source File: chrome://webdeveloper/content/common/history.js
Line: 7

This review is for a previous version of the add-on (1.1.9.1-signed). 

Best addons Rated 5 out of 5 stars

Adblock Plus(Limited my Data usage)
Foxtab:(Easy & Stylish browsing)
Last pass:(Stopped hitting my keypad oftenly)
Screen capture Elite:(User friendly)
Save images by lumox:(Saves my time)
Firefox addons saves my time as money.. So of-course i am Happy.

This review is for a previous version of the add-on (1.1.9.1-signed).  This user has a previous review of this add-on.

The add-on which made me fell in love with coding again Rated 5 out of 5 stars

I do webdesign and programming as a hobby in my spare time and I really like coding and taking care of a few websites I have. A year ago I was about to give up because of the bugs I was getting all the time and no matter how hard I tried to write correct and proper code, I was inevitably ending with a few problems which were turning my entire design upside down.
I loved coding but I hated the bugs more than anyone and it was very time consuming to re-read the entire code and find where exactly the problem is, and playing with the div's background color, and width, and height, and finding what exactly causes that page to look awful was so not for me.
Fortunately, I stumbled upon an article retweeted by someone and they were recommending this add-on. Now I can easily debug my pages and see what my mistakes are, I don't need to copy/paste source codes and read them in text editors and spend hours on that. The Ctrl+Shift+F key combination is my best ally now, It helps me debug and keep myself a happy designer. How great!

This review is for a previous version of the add-on (1.1.9.1-signed). 

Brilliant Rated 5 out of 5 stars

So useful. Simple things like hiding CSS to see page structure, switching off JS, etc, become 2-3 clicks. If this wasn't free, I'd probably pay for it!

This review is for a previous version of the add-on (1.1.9.1-signed). 

Great addon! Rated 5 out of 5 stars

...one minor thing though: when the addon's button is placed in the toolbar along with other icons (I use the menu bar old-firefox-style) using the only-icon/no-text option for the toolbar icons, it displays way off (displaced upwards) than the other icons. I have around 25 icons in the menu toolbar and I'm only having this issue with this addon (using 1.2b1) and with the HackTheWeb addon's icon - other addons' icons display fine aligned at the same level/height.

I am using latest firefox x64 nightlies (currently 15.0a1) on Windows 7 x64 if that matters.

Other then that this is truly a life-saving addon! Thanx for the time and effort spent on it.

This review is for a previous version of the add-on (1.1.9.1-signed). 

Ease of Web developement Rated 5 out of 5 stars

Most of the unique features of this add-on, like resizing of window to test the web project in different windowing size, editing HTML pages directly without tempering the page, displaying the complete web page elements information, are very useful in web developement

This review is for a previous version of the add-on (1.1.9.1-signed).  This user has a previous review of this add-on.

Rated 5 out of 5 stars

I use this almost on a daily basis. The ease of use, full function capabilities, and quick response make this a must have add-on for any developer. Kudos.

This review is for a previous version of the add-on (1.1.9.1-signed). 

Fix for Web Developer + NoScript Rated 5 out of 5 stars

The Web Developer toolbar is a must-have for web developers (arguably better than Firebug).

One of the features is showing all CSS / JavaScript (inline and external!) of the current page. Each slice can be collapsed, so that you don't have to scroll through a big wall of text before finding the desired line of code.

Unfortunately, the NoScript extension disables this feature. To save enable this feature again, I have written a Greasemonkey script: http://userscripts.org/scripts/show/133136

This review is for a previous version of the add-on (1.1.9.1-signed). 

More than I could ever ask for! Rated 5 out of 5 stars

This add-on is an excellent tool. As a web developer I often find myself in need of a specific measurement for an element, this add-on includes an excellent, ruler. Using this tool saves me so much time and takes the guess work out of my measurements. The ability to show information and/or outline all of the various elements of a page is a great way to find the perfect placement of objects. This tool also allows you to disable various elements such as images or Javascript as well as to validate your code.

This review is for a previous version of the add-on (1.1.9.1-signed). 

Rated 5 out of 5 stars

Awesome extension, use it everyday at work. From double checking to problem solving this saves LOADS of wasted hours every single day!

This review is for a previous version of the add-on (1.1.9.1-signed).