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Using exactly the same steps as in my previous posts I created a .xpi file for Firefox 6.0.
You can get it here: CSSViewer for Firefox 6.0 v. 1.0.3

Enjoy ;)

Following the same steps as in my previous post “Install CSS Viewer add-on in Firefox 4.0.*” you can install CSS Viewer in Firefox 5.0.*

You can download a .xpi file I created and checked that it works fine with Firefox 5.0.
Download: CSSViewer for Firefox 5.0 v. 1.0.3

I was really happy when I discovered that the CSS Viewer is available for Chrome for free from M. ed.
In case that you did not know it check here (visit the link with Chrome browser to be able to install the extension).

Are you using Firefox 5.0?
Then you can get CSS Viewer for Firefox 5.0 here: CSSViewer for Firefox 5.0 v. 1.0.3

After a 4 months delay Firefox 4 is here!

CSS Viewer (a must-have add-on for all web developers) is not compatible (at least official) with Firefox 4.0.

Good news! Following the same procedure as in my previous posts, Install CSSViewer add-on in Firefox 3.6.* and Install CSSViewer add-on in Firefox 3.5.* you can install CSS Viewer in Firefox 4.0.*

Just follow these steps:

1. Copy the following address to another browser than Firefox (so that the pop up installation window will not come out)

https://addons.mozilla.org/en-us/firefox/addon/cssviewer/

2. Download the file cssviewer-1.0.3-fx.xpi

3. Use 7-zip (or any other extractor) to open it and extract it

4. Open install.rdf with notepad (I used Notepad++ to find easily the line I must change)

5. On line 18 you see <em:maxVersion>3.0.*</em:maxVersion> you must change it to <em:maxVersion>4.0.*</em:maxVersion>

6. Save the file and select all the files you extracted and make a zip file

7. Now you must rename the zip file including the zip extension to cssviewer-1.0.3-fx.xpi (it will prompt you if you are sure you want to change the file name extension and you must click yes)

8. Now drag n’ drop the xpi file to Firefox 4.0.* and the installation window will pop up. Install it normally ;)

I have checked it and it works great in Firefox 4.0

You can download a .xpi file I created and checked that it works fine with Firefox 4.0.
Download: CSSViewer for Firefox 4.0 v. 1.0.3

If you have any question or difficulty installing the add-on please comment.

Following my old post you can make the add-on CSSViewer to work with Firefox 3.6.* with exactly the same procedure.

A small change only in step 5.

On line 18 of install.rdf file, instead of “3.5″ change the version to “3.6″ and you are done. All the rest is the same.

I have used it so far without any problems. If you notice something wrong please comment.

Have fun ;)

CSSViewer is a very handy add on for Firefox, which shows the css parameters of any element in a website. If you use it once then you cannot live without it.

The bad news are that it is not compatible with the Firefox 3.5.* version, and from what I can understand there are no plans for an update.

The good news are that there is a really easy way to install it and make it work perfect in Firefox 3.5.*

1. Copy the following address to another browser than Firefox (so that the pop up installation window will not come out)

https://addons.mozilla.org/en-US/firefox/addon/2104

if you do not have any other browser installed go to

https://addons.mozilla.org/en-US/firefox/addons/versions/2104

2. Download the file cssviewer-1.0.3-fx.xpi

3. Use 7-zip (or any other extractor) to open it and extract it

4. Open install.rdf with notepad (I used Notepad++ to find easily the line I must change)

5. On line 18 you see <em:maxVersion>3.0.*</em:maxVersion> you must change it to <em:maxVersion>3.5.*</em:maxVersion>

6. Save the file and select all the files you extracted and make a zip file

7. Now you must rename the zip file including the zip extension to cssviewer-1.0.3-fx.xpi (it will prompt you if you are sure you want to change the file name extension and you must click yes)

8. Now drag n’ drop the xpi file to Firefox 3.5.* and the installation window will pop up. Install it normally ;)

I have checked it and it works great in Firefox 3.5.1

If you have any problem installing the add on or you like the tip please comment ;)