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Extensions are a type of Firefox add-on. This article describes how to use and manage extensions in Firefox. __TOC__ = What are extensions? = Extensions are Firefox add-ons that provide additional functionality to Firefox. People all over the world have developed thousands of extensions for Firefox. There are extensions that allow you to block advertisements, download videos from websites, integrate more closely with websites like Facebook or Twitter, and add features you see in other browsers. = How to install extensions = == Installing from the Add-ons window == {for win}[[Video:ffcfb5cf99462ceaa51ab07322dc17d6-1245411854-896-0]]{/for} # {for win,linux}At the top of the Firefox window{/for}{for mac}On the menu bar{/for}, click on the {menu Tools} menu and select {menu Add-ons}. The Add-ons window will appear. # Select the {menu Get Add-ons} panel. # In the Get Add-ons panel, click in the ''Search All Add-ons'' box. Type something about the add-on you are looking for and press {for win,linux}{key Enter}{/for}{for mac}{key Return}{/for}. Add-ons that match your search will appear in the list. {for win,linux}<br/> <br/> [[Image:c793983bf2b04676e58ccc1c042d47a3-1258324487-181-1.png]] <br/>{/for} ** If you would rather not search, click the '''Browse All Add-ons''' link to be taken to the [https://addons.mozilla.org Firefox Add-ons website]. ** To get more details about any extension, select it, then click the '''Learn More''' link to be taken to a page with more information about the extension you've selected. # To install an extension, click the {button Add to Firefox...}. The Software Installation window will appear. ** If you are prompted with an [http://en.wikipedia.org/wiki/EULA End-User License Agreement], read the license and click {button Accept and Install...} if you agree with its terms and wish to proceed. # When the {button Install Now} button becomes available, click on it. {for win,linux}<br/> <br/> [[Image:c793983bf2b04676e58ccc1c042d47a3-1258324487-181-2.png]] <br/>{/for} # After the extension downloads, click {button Restart Firefox} to finish the installation. Firefox will restart and your new extension will be available. {for win,linux}<br/> <br/> [[Image:c793983bf2b04676e58ccc1c042d47a3-1257616439-552-1.png]] <br/>{/for} == Installing from the Firefox Add-ons website == {for win}[[Video:dbfc229568ff864272bcfc74c82b93f7-1245453054-445-0]]{/for} For a categorized directory of extensions that you can browse, visit the [https://addons.mozilla.org Firefox Add-ons] website. When you find an extension you want to add: # Click the '''Add to Firefox''' button. The Software Installation window will appear. # When the {button Install Now} button becomes available, click on it. # After the extension downloads, click {button Restart Firefox} to finish the installation. Firefox will restart and your new extension will be available. = Managing extensions = == How to change extension settings == Some extensions have settings you can change from the Add-ons window's Extensions panel. # In the Add-ons window, select the {menu Extensions} panel. # Select the extension you want to edit. # Click the {for win}{button Options}{/for}{for mac,linux}{button Preferences}{/for} button. {for win}<br/> <br/> [[Image:c793983bf2b04676e58ccc1c042d47a3-1258324487-181-5.png]] <br/>{/for} ** If the {for win}{button Options}{/for}{for mac,linux}{button Preferences}{/for} button is not available, the extension does not offer settings to change. Each extension will have different settings that can be changed. [[T:contextmenu]] on an extension in the list and select {menu Visit Home Page} to see if the extension's author has a website with documentation. == How to update extensions == # In the Add-ons window, select the {menu Extensions} panel. # Click the {button Find Updates} button. # If there were updates found, the {button Updates} panel will be selected. # Click {button Install Updates}. The updates will be downloaded. {for win}<br/> <br/> [[Image:c793983bf2b04676e58ccc1c042d47a3-1258324487-181-4.png]] <br/>{/for} # Click {button Restart Firefox} to finish the updates. Firefox will restart and the selected extensions will be updated. == How to disable or uninstall extensions == If you select an extension in the Add-ons window's {menu Extensions} panel, you can click {button Disable} to turn it off or {button Uninstall} to remove it. For more information, see [[Uninstalling add-ons]]. = Troubleshooting = * If you cannot install an extension, see [[Unable to install add-ons]]. * If you have problems with Firefox, they may be caused by an extension or combination of extensions. For help on how to diagnose extension problems, see [[Troubleshooting extensions and themes]].