Add Add-ons to Mozilla Firefox on Windows 7

Hi, you're watching VisiHow, and this is a tutorial on how to add add-ons to the Mozilla Firefox browser on a Windows 7 computer.

Steps

1. 1
   Start off by double-clicking Mozilla Firefox icon to open the browser

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   Wait for it to load.

   

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2. 2
   Once the browser is loaded, go to the "Add-ons" section

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   To do so, click the icon with three lines in the upper right-hand corner of the screen.

   

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3. 3
   Click "Add-ons" once, and a new window will open

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4. 4
   There are no add-ons yet in the example

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   Click "Get Add-ons" located at the left side of the screen, and wait for it to load.

   

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5. 5
   It will show you a lot of new add-ons that you can download for free or for a price

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   YouTube FlashHTML5 player was chosen in the example. Click the add-on.

   

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6. 6
   Click "Add to Firefox" once, and wait for the download to finish

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7. 7
   Once the download is finished, a message box will pop up

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   Click "Install Now", and wait.

   

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8. 8
   YouTube FlashHTML5 has been added to Firefox in the upper right-hand corner

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9. 9
   Go to YouTube and choose a video

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   In the example, the video "Jimmy Fallon Thanks David Letterman" was selected.

   

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10. 10
    In the example, the video will not open because it requires HTML5 or Adobe Flash Player

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    To change this, click on the add-on.

    

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11. 11
    Click the "HTML5" icon

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    Now, YouTube HTML5 player is active.

    

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12. 12
    Refresh the page, and the video will load

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    This means the add-on has been successfully added, and it's now fully working.

    

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13. 13
    This concludes our tutorial on how to add add-ons to the Mozilla Firefox browser on a Windows 7 computer

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    Thank you for watching VisiHow. If you have any comments or questions, please leave them in the comment section below.

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Video: Add Add-ons to Mozilla Firefox on Windows 7

If you have problems with any of the steps in this article, please ask a question for more help, or post in the comments section below.

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