# Installing the Firebug extension [edit]

This page describes how to install the Firebug extension into Firefox.

## Introduction

When you install the Aptana debugger, Aptana will automatically install a version of Firebug that is integrated with Aptana for you. By using both Firebug and the Aptana debugger, you'll be able to do things like set breakpoints in Firebug and be able to use those same breakpoints in the Aptana debugger.

## Instructions

Note: If you already have a previous version of Firebug and/or the Aptana debugger installed, please uninstall them before you install the Aptana-integrated version of Firebug. After uninstalling these extensions, re-start and then shut down Firefox one more time before beginning the installation process.

To install Firebug:

1. Follow the instructions in Installing the JavaScript debugger.
2. Re-start your web browser.
3. With an HTML file open, click the Debug button , as if you were going to start debugging.

   You should see the icons for the Aptana debugger and Firebug in the lower-right corner of your browser.

Note: If Firebug is not automatically installed, download the extension file from Aptana:

http://update.aptana.com/update/firebug.xpi

Once you download this file, start Firefox, and drag the Firebug file onto your open Firefox window. Follow the instructions to install the extension and re-start Firefox.

## Related Topics

- About Firebug
- Inspecting HTML
- Inspecting CSS
- Monitoring XMLHttpRequests
- Editing a web page
- Writing to the Firebug console
- Setting breakpoints in Firebug
- Profiling code performance

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Category: AptanaHelp