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How to Download, Install, and Unintall Firefox Extensions

With just a few clicks of the mouse, you can make Firefox more fun and useful.

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About a third of all people online use the Firefox web browser, and if you're part of that open source group, then you should know about an easy (and fun) way to customize your online experience.

Whether you'd like to make all the text a little bigger or you want to hide yourself from prying eyes, Mozilla (the maker of Firefox) has created a simple way to add these features -- extensions. All you have to do is find the extension you want to try, click on the download button, and install it ... but if you're still a little nervous, just follow the step-by-step instructions below and you'll be set up in no time.

Note: The instructions below cover Linux, Microsoft Windows, and OS X, so just find your operating system and follow the steps listed underneath its heading. Also, if you don't currently have Firefox installed on your system but you'd like to give it a try, just head on over to the official page to download it.

If You're Using Linux

  1. Make sure that you have Firefox installed and open.
  2. Click on the Firefox button in the top left-hand corner, and select "Add-ons" from the dropdown menu.
  3. This will open up the "Add-ons Manager" screen, and you'll need to select the "Get Add-ons" option at the top of the left-hand column.
  4. You should now see a screen with the heading "What are Add-ons?" at the top. If you look in the bottom right-hand corner of that page, there's a heading that reads "More ways to customize" -- click on the "Browse all add-ons" link underneath.
  5. A new tab will open, and here's where you'll find all the Firefox extensions, ready for you to download. You can do a specific search if you know what you're looking for, or you can browse by topic or theme. When you find an extension that you want to try:
    • Click on the green "+ Add to Firefox" button.
    • Click on the "Install Now" button on the next popup screen. You might need to restart Firefox for the extension to finish installing, but Firefox will let you know if that's the case, and it will walk you through the whole process.

If you decide that you don't like the extension, they're also easy to uninstall. Just follow steps 1 and 2 above, but in step 3, select "Extensions" from the left-hand column, highlight the extension you'd like to get rid off, and click on the "Remove" button on the far right-hand side.

If You're Using Microsoft Windows

  1. Make sure that you have Firefox installed and open.
  2. Click on the Firefox button in the top left-hand corner, and select "Add-ons" from the dropdown menu.
  3. This will open up the "Add-ons Manager" screen, and you'll need to select the "Get Add-ons" option at the top of the left-hand column.
  4. You should now see a screen with the heading "What are Add-ons?" at the top. If you look in the bottom right-hand corner of that page, there's a heading that reads "More ways to customize" -- click on the "Browse all add-ons" link underneath.
  5. A new tab will open, and here's where you'll find all the Firefox extensions, ready for you to download. You can do a specific search if you know what you're looking for, or you can browse by topic or theme. When you find an extension that you want to try:
    • Click on the green "+ Add to Firefox" button.
    • Click on the "Install Now" button on the next popup screen. You might need to restart Firefox for the extension to finish installing, but Firefox will let you know if that's the case, and it will walk you through the whole process.

If you decide that you don't like your extensions, don't worry! They're easy to uninstall. Just follow steps 1 and 2 above, but in step 3, select "Extensions" from the left-hand column, highlight the extension you'd like to get rid off, and click on the "Remove" button on the far right-hand side.

If You're Using OS X

  1. Make sure that you have Firefox installed and open.
  2. Click on "Tools" in the top menu bar, and select "Add-ons" from the dropdown menu.
  3. This will open up the "Add-ons Manager" screen, and you'll need to select the "Get Add-ons" option at the top of the left-hand column.
  4. You should now see a screen with the heading "What are Add-ons?" at the top. If you look in the bottom right-hand corner of that page, there's a heading that reads "More ways to customize" -- click on the "Browse all add-ons" link underneath.
  5. A new tab will open, and here's where you'll find all the Firefox extensions, ready for you to download. You can do a specific search if you know what you're looking for, or you can browse by topic or theme. When you find an extension that you want to try:
    • Click on the green "+ Add to Firefox" button.
    • Click on the "Install Now" button on the next popup screen. You might need to restart Firefox for the extension to finish installing, but Firefox will let you know if that's the case, and it will walk you through the whole process.

If you decide that you don't like your extensions, don't worry! They're easy to uninstall. Just follow steps 1 and 2 above, but in step 3, select "Extensions" from the left-hand column, highlight the extension you'd like to get rid off, and click on the "Remove" button on the far right-hand side.

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