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Best Firefox Addons For Web Developers :

Mozilla Firefox is becoming more and more powerful tool in these days.With its Addons feature it has been the most powerful browser for sure.
Addons Are just like a accessories which get stick to the core part of the firefox.
And the best Part Is that user Can decide which feature he needs And can include and exclude the feature according to his will.
These Are The 13 Most Useful Firefox Addon which are essential For a blogger/web developer.This is not the final list still there are hundreds more complex addons Built keeping in mind about specific people.Just Search If you do not find what you are looking for.

1.Web Developers Toolbar

The Web Developer extension adds a menu and a toolbar with various web developer tools          DEveloper : chrispederick               Homepage  Webdevelopers help : 

Firebug is pretty similar as web developer, but it comes across with few different powerful options. You have an ability to edit, debug, and monitor CSS, HTML, and JavaScript right in any web page.
Visit the Firebug website for documentation, screen shots, and discussion forums:
Advanced Eyedropper, ColorPicker, Page Zoomer and other colorful goodies...

Support for this add-on is provided by the developer at

Draw out a ruler to get the pixel width and height of any elements on a webpage.


Support for this add-on is provided by the developer at

5.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.

  For more information, or other platforms, see:

Or the forum:


Allows you to customize the way a webpage displays using small bits of JavaScript.

Hundreds of scripts, for a wide variety of popular sites, are already available at

You can write your own scripts, too. Check out to get started.


Support for this add-on is provided by the developer at

7.Screen Grab.!!

Screengrab! saves webpages as images...

It will capture what you can see in the window, the entire page, just a selection, a particular frame... basically it saves webpages as images - either to a file, or to the clipboard.


Support for this add-on is provided by the developer at or by sending an e-mail to

  • Zoom in-zoom out
  • RMB+scroll zooming (Right mouse button + mouse wheel zooming)
  • Page Zooming
  • Reset Image Size
  • Custom Zoom
  • Fit Image to Screen
  • And many more

Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aims to provide a powerful JavaScript debugging environment for Mozilla based browsers.


Support for this add-on is provided by the developer at


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.


Support for this add-on is provided by the developer at

11.Dummy lipsium

Generate "Lorem Ipsum" dummy text (from

Minimum text length: 5 words.

Context menu option on form inputs ("Insert Dummy Lipsum"). This option fills automatically the selected field.


Support for this add-on is provided by the developer at

12.Font Finder

Simply highlight a single element (e.g. a paragraph or a strong tag ), right-click and select `Font Finder`, then marvel as the full CSS text styling of the selected element appears.

I will be updating this at some point (been promising it for ages) - just rebuilding my website currently and then I'll be back to extension development!


Support for this add-on is provided by the developer at or by sending an e-mail to

Saves and manages frequently-entered text for later pasting into Web page forms in Firefox or email and newsgroup messages in Thunderbird. Pasting a clipping is accomplished with just two mouse clicks, eliminating the hassle of retyping or repetitive copying and pasting.

These Are The 13 Most Useful Firefox Addon which are essential For a blogger/webdevloper


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This hack was originally posted on thisischen

ScreenShot :
Update - Previous Reply code was not working for some blogger templates.This is an updated version and work well with all templates
Adding Comment Replies to your blog.

Step [1] In your dashboard Click 'Layout' > 'Edit Html'> Tick the 'Expand Widget templates' box.

Step[2] Find the following code in your blogs Html : <data:commentPostedByMsg/> 

Step[3]. Paste the following code Directly Below/After <data:commentPostedByMsg/>  

<span class='comment-reply'…