How to Manage Plug-Ins in the Safari Web Browser

Plug-ins add functionality to Apple's built-in browser

Plug-ins add functionality and enhance the power of the Safari browser. Some, such as essential Java plug-ins, may come with Safari, while you install others. Your computer maintains a list of the installed Safari plug-ins, along with descriptions and MIME type information for each, on your computer in HTML format.

You can view this list within your browser in a few short steps.

Instructions in this article apply to Safari in macOS Mojave and earlier.

How to View Plug-Ins in Safari

You can see the plug-ins you installed in Safari through the browser's Help menu. Here's how to access the list.

  1. Open the browser by selecting the Safari icon in the dock.

  2. Select Help in the browser menu, located at the top of the screen.

  3. A drop-down menu appears. Choose the option labeled Installed Plug-ins.

  4. A new browser tab opens. It contains detailed information on the currently installed plug-ins, including name, version, source file, MIME type associations, descriptions, and extensions.

How to Manage Plug-Ins

Now that you know how to see which plug-ins are installed, here's how to modify the permissions.

  1. Select Safari in the browser menu, located at the top of the screen.

  2. When the drop-down menu appears, select Preferences.

    The keyboard shortcut is Command+, (comma).

    Safari on a Mac with the Preferences menu item highlighted
  3. Select the Security heading.

    Safari Preferences with the Security tab highlighted
  4. Located at the bottom of the Safari Security Preferences is the Internet plug-ins section. It contains a check box that dictates whether or not add-ons are allowed to run in the browser. This setting is enabled by default. To prevent all plug-ins from running, clear the check box.

  5. Select Plug-In Settings.

  6. Safari lists all current plug-ins along with each website the browser currently has open. To control how each plug-in interacts with a site, select the respective drop-down menu, and choose one of the following options:

    • Ask
    • Block
    • Allow (default)
    • Allow Always
    • Run in Unsafe Mode