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The Firebug entry point and also the only Firebug UI visible immediately after installation is s Firebug button (icon) placed at the right side of the navigation Firefox toolbar.

This button is called Firebug Start Button and its main purpose is to open Firebug UI by clicking on it (you can also use F12 key to open Firebug) but, the button does much more than just opening Firebug...

Activation Status

Another purpose of the start button is indicating Firebug activation status. If Firebug is opened in your browser and collecting information about the current page (e.g. HTTP traffic) - the button is colored. If Firebug is deactivated and not representing any performance penalties - the button is grey.

 Firebug is activated
 Firebug is deactivated

There is also a tooltip associated with the button displaying detailed info about activation status.

Firebug is fully deactivated.

Firebug is activated on one page and panel Cookies is disabled.


If there are any errors on the page, the button indicates that by showing a badge with number of errors.


There is also a popup menu associated with the button

By default, the button indicates errors on the page and Firebug UI is located at the bottom. See detailed description of individual menu items on Firebug wiki.

Start button at the bottom

If you prefer to have the button at the bottom of the browser window (within Firefox add-on bar), use Firefox Customize Toolbar dialog.

Open the dialog through Toolbar Layout... menu.

As soon as the dialog is opened, you can drag the start button icon and drop it at the add-bar at the bottom of the browser window. That's it, don't forget to make sure the add-on bar is checked to be displayed (see the screenshot above).


If you have any tips how to improve this feature leave a comment, thanks!

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  1. [...] Firebug Tip: The Start Button Icon. Share this:LinkedInTwitterFacebookMorePinterestTumblrStumbleUponDiggRedditEmail This entry was posted in Uncategorized by Azizur Rahman. Bookmark the permalink. [...]

    #1 Firebug Tip: The Start Button Icon | Azizur Rahman
  2. [...] is a maintenance release fixing compatibility problem with Firefox 15. This problem caused the Start Button to disappear from Firefox 15 toolbar. It’s now fixed (see more details in issue [...]

    #2 Getfirebug Blog » Blog Archive » Firebug 1.10.6
  3. How do i save changes made with firebug?

    #3 check it
  4. If some one realize how to save changes with FB please share with us

    #4 commentario

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