Inspect
Pinpoint an element in a webpage with ease and precision.
Log
Send messages to the console direct from your webpage through Javascript.
Profile
Measure your Javascript performance in the Console's Profiler.
Debug
Step-by-step interactive debugging in a visual environment.
Analyze
Look at detailed measurements of your site's network activity.
Layout
Tweak and position HTML elements with CSS and the Layout panels.

Recent news

Firebug 1.10a8

getfirebug.com has another great release: Firebug 1.10a8!

Firebug 1.10a8 fixes 25 issues.

Some highlights from this release:

  • Trace Styles (issue 2916) – This fresh new feature allows to trace all places which affected specific CSS attribute. This feature is now part of the Computed side panel where every CSS
    attribute is now expandable

    As part of this feature, the Computed side panel also supports tooltips for colors, images and fonts.


  • Extended monitorEventS() API (issue 5406) – it’s possible to specify a group of events that should be monitored.

  • Auto Completion for CSS selectors (issue 5421) – Firebug auto-completes IDs or class names when the users creates a new CSS selectors!


  • Link between web-font usage and its declaration (issue 5438) – This feature allows to quickly find the place where web-fonts are declared.

Thanks to awesome Sebastian Zartner and Simon Lindholm who have done tremendous work on this release!

Please post feedback in the newsgroup, thanks.

Jan ‘Honza’ Odvarko

Firebug 1.9.2

Firebug 1.9.2 has been released! Since it must go through the review process on AMO it can take a few days to appear.

Compatibility table:

  • Firefox 6.0 – 13.0 with Firebug 1.9
  • Firefox 14.0 – 15.0 with Firebug 1.10

This is a maintenance release that fixes several issues already tested with Firebug 1.9.2b1.

Note that Firebug 1.9.2b2 is equal to 1.9.2 and has been released to also updated the beta channel on AMO.

Post feedback in the newsgroup

Jan ‘Honza’ Odvarko

Firebug 1.10a7

getfirebug.com has Firebug 1.10a7

Firebug 1.10a7 fixes 11 issues.

Some highlights from this release:

  • This version fixes compatibility problem with Firefox Nightly (issue 5375)
  • Autocompletion for font-family property in the Style panel (issue 5373)
  • displayName function property is now supported also by the Profile (issue 5359)

Please post feedback in the newsgroup, thanks.

Jan ‘Honza’ Odvarko

Read more blog posts on the Firebug weblog »