Archive for May, 2013

Firebug 1.12 alpha 7

Friday, May 31st, 2013 has Firebug 1.12 alpha 7

Firebug 1.12a7 fixes 8 issues
Firebug 1.12a7 is compatible with Firefox 21-24


Some highlights from this release

  • Group Console Messages (issue 4979)
  • Console messages are grouped now in case the messages appear multiple times consecutively. This feature can dramatically decrease number of logs and make the entire logging easier!

    Grouped Logging
    The number on the right side tells how many logs is grouped in the log.


  • Create selector groups for Elements side panel (issue 5955)
  • Multiple selector trials are now shown as foldable groups of elements. These groups persist on page reloads and are dynamically updated when the page changes.

    Selector Groups


  • Issue 6447: Improve display of timings in net request infotip (issue 6447)
  • The tooltip for individual HTTP requests displayed in the Net panel has been improved. It displays all phases of the current request as a little waterfall graph. And so, it’s now a lot easier to understand the timing.

    Net panel tooltip


Please post feedback in the newsgroup, thanks

Jan ‘Honza’ Odvarko


Firebug 1.11.4

Friday, May 24th, 2013

Firebug 1.11.4 has been released (archive).

Firebug 1.11.4 fixes 4 issues
Firebug 1.11.4 is compatible with Firefox 17-22

All users subscribed to AMO beta channel should be already updated to version 1.11.4 beta 1 which is exactly the same as 1.11.4.


This version is a follow-up for 1.11.3 and fixes some reported problems. Specifically XHR Spy works again for Firefox 17 and CSS pseudo-element rules are now properly displayed in the Style panel.


Please post feedback in the newsgroup, thanks!

Jan ‘Honza’ Odvarko


Firebug 1.12 alpha 6

Friday, May 17th, 2013 has Firebug 1.12 alpha 6

Firebug 1.12a6 fixes 11 issues
Firebug 1.12a6 is compatible with Firefox 20-23


Couple of highlights from this release

This feature allows referring various objects from the command line using new $p variable.

Use in Command Line

See also detailed description of this feature.


    • Precision for Console API %f log pattern (issue 6439)

Floats can be rounded by using the %.xf pattern inside the first console.log() argument. Here x denotes the number of decimal places the number should be rounded to.

Precision pattern

console.log("amount: %.2f", 4.3852)
will output
amount: 4.39

You may want to get to know about the other patterns available inside the Console API.


Please post feedback in the newsgroup, thanks

Jan ‘Honza’ Odvarko


Firebug 1.11.3

Sunday, May 12th, 2013

Firebug 1.11.3 has been released (archive).

Firebug 1.11.3 fixes 15 issues
Firebug 1.11.3 is compatible with Firefox 17-22

All users subscribed to AMO beta channel should be already updated to version 1.11.3 beta 1 which is exactly the same as 1.11.3.


One little problem related to browser page context-menu slipped into this release. If you experience the menu being unexpectedly long, just restart your browser.


Please post feedback in the newsgroup, thanks!

Jan ‘Honza’ Odvarko


Firebug 1.12 alpha 5

Friday, May 3rd, 2013 has Firebug 1.12 alpha 5

Firebug 1.12a5 fixes 22 issues
Firebug 1.12a5 is compatible with Firefox 20-22

Some highlights from this release

  • Filter for DOM event logs (issue 229)
  • This feature allows to filter DOM event logging that is set for specific element.

    We are not entirely sure if the UI/UX is OK and so, please read this post to help us.

    Filter DOM Events

  • The CSS panel displays file with @media elements (issue 1717)
  • @keyframes rules are now displayed inside the CSS panel (issue 5290)
  • @keyframes rules inside CSS panel

  • Autocompletion for Firebug’s CommandLine API (issue 5416)
  • There is a new auto-completion support for Command Line API.

    Command Line Autocompletion

  • @-moz-document rules are displayed inside the CSS panel (issue 5429)
  • @-moz-document rules inside CSS panel

Please post feedback in the newsgroup, thanks

Jan ‘Honza’ Odvarko

Future of Firebug Lite

Thursday, May 2nd, 2013

Firebug Working Group (FWG) has always been maintaining two projects.

  • Firebug – The Firefox extension
  • Firebug Lite – Pure web application compatible with all major browsers

Firebug has always had a lot more features since it’s a Firefox extension and as such it has the ability to use Firefox API that are not accessible for web applications (e.g. debugging API, HTTP monitoring API, etc.).

Firebug Lite on the other side runs in all major browsers as a standard web application. It’s a great advantage for developers who want to debug their applications in more browsers and stick to the same UI/UX.


Firebug Lite can be also used as a bookmarklet (click the link to open Firebug Lite at the bottom of your browser).

Firebug Lite

Firebug Lite


Firebug Lite has always been a very interesting project for us and we think that it has great future and the ability to compete with all existing developer-tools offered by various browsers. It has a future because it’s different and here is what we think makes the project unique:

  • Firebug Lite supports more browsers, so developers don’t have to switch between different tools (and different UI/UX) when implementing an application for more browsers.

  • Firebug Lite uses extensible architecture and it’s possible to develop extensions or integrate existing tools (e.g. bookmarks) all running across various browsers.

  • As browsers expose more APIs to the content (web apps), Firebug Lite can heavily profit from it.

  • Firebug Lite could support various remote debugger protocols (V8, RDP, etc.) to access more browser features, support remote debugging and implement the same features for different browsers.


FWG is a relatively small group of enthusiastic developers and for pragmatic reasons we decided (some time ago) to focus on one project only: Firebug – the Firefox extension. Of course, this helps us to keep Firebug a great tool and deliver stability as well as new features, which is already a lot of work on our plates. This means there is currently no one working on or providing support for Firebug Lite.

However, this opens a great opportunity for any enthusiastic developers looking for an open source project to contribute to and/or become a leader of it.


Does it sound interesting to you?
If yes, just contact me (odvarko at gmail dot com).



You can also post feedback in the newsgroup.


Jan ‘Honza’ Odvarko