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Pinpoint an element in a webpage with ease and precision.
Log
Send messages to the console direct from your webpage through Javascript.
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Measure your Javascript performance in the Console's Profiler.
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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 1.12 alpha 6

getfirebug.com 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

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

getfirebug.com 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


Read more blog posts on the Firebug weblog »