Add-ons are pieces of software that are designed to work in conjunction with Internet browsers and add new elements and capabilities to the browsers. Add-ons are commonly also referred to as "plug-ins," "extensions" and "mods." These add-ons are commonly developed by third party developers and not associated with the company that produces the Internet browser. The five most popular Internet browsers – Microsoft Internet Explorer, Mozilla Firefox, Google Chrome, Opera and Safari – all support the use of add-ons. Enable add-ons by following the steps for your Internet browser of choice.

Method 1
Method 1 of 5:

Google Chrome

  1. 1
    Find the Google Chrome desktop shortcut on your desktop and right click on it. Select "Properties."
  2. 2
    Click the "Shortcut" tab. Type "-enable-extensions" in the text box labeled "Target" after the existing line of code, click "Apply" and then click "OK".
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  3. 3
    Restart your browser so the changes take effect.
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Method 2
Method 2 of 5:

Microsoft Internet Explorer

  1. 1
    Open your Microsoft Internet Explorer browser. Click on the "Tools" menu and click on "Manage add-ons"
  2. 2
    Click on the name of the Internet Explorer add-on you want to enable. Click "Enable," and then close the tab.
  3. 3
    Restart your browser so the changes take effect.
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Method 3
Method 3 of 5:

Mozilla Firefox

  1. 1
    Open your Mozilla Firefox browser and click on the "Tools" menu and click on "Add-ons".
  2. 2
    Click on the "Extensions" tab. Click on the add-on you want to enable and click "Enable."
  3. 3
    Restart your browser so the changes take effect.
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Method 4
Method 4 of 5:

Opera

  1. 1
    Run your Opera browser and click on "Settings." Select "Quick Preferences."
  2. 2
    Check the box next to "Enable plug-ins".
  3. 3
    Restart your browser so the changes take effect.
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Method 5
Method 5 of 5:

Safari

  1. 1
    Open your Safari browser and click on the gear icon. Click on "Preferences".
  2. 2
    Click on the "Advanced" tab.
  3. 3
    Click the box next to "Show develop menu." Close the window.
  4. 4
    Select the page icon and click on "Develop." Click "Enable extensions."
  5. 5
    Restart your browser so the changes take effect.
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Warnings

  • Be wary of enabling any add-ons that came from a third-party website and not from your Internet browser's website. Read reviews on the add-on and make sure it is something that is safe to run on your computer before you enable it.
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About This Article

wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, volunteer authors worked to edit and improve it over time. This article has been viewed 96,647 times.
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Co-authors: 8
Updated: September 3, 2020
Views: 96,647
Categories: Firefox
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