The Developer Toolbar is a command driven console in the Firefox web browser that enables you to perform specific actions within the browser.
While you may run most of these actions from other locations within the browser as well, it is often faster and more convenient to use than those options.
As far as basics are concerned, you display the Developer Toolbar with the shortcut Shift-F2, or by tapping on the Alt-key and selecting Tools > Web Developer > Developer Toolbar.
It opens as a single line at the bottom of the interface waiting for input. One command that you may want to use first is help, as it lists the commands the Developer Toolbar supports at this point in time.
Developer Tools commands useful to all Firefox users
We have covered several commands in the past, and since I don't want to rehash information, I merely link to the guides instead.
While those are certainly useful, the following commands may prove useful as well:
1. Restart Firefox
Firefox has no native restart button or option but may display a restart dialog when you upgrade the browser or install select add-ons.
To restart from the Developer Toolbar, use the following command:
The command supports two parameters:
2. Manage and clear the appcache
The application cache is used by HTML5 applications as local storage. It is used for a variety of purposes, for instance to enable offline access to data or improve the loading of resources that are regularly used by a web application.
The following two commands may be useful to all Firefox users:
3. Open a local folder
You can open local folders right from the Developer Toolbar. While this may not be faster than opening them via shortcuts or the local file browser, one supported parameter ensures that you can open the Firefox profile folder quickly.
The support commands are:
4. Resize the page
You may use the resize command to resize the page in Firefox . This can be useful if you want it to display in a specific size without having to use the mouse to resize it.
The command to do so is:
Firefox's Developer Toolbar is a powerful feature of the browser that receives new commands on a regular basis. While most commands are of limited use to non-developers, some may improve how you work with the browser.
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