Get extensions to customize Safari on Mac
You can install Safari extensions to customize the way your browser works. For example, extensions can help you display social media and news buttons, block content on websites, give you access to features from other apps, and more.
Extensions may access the content of the webpages you visit. Check which extensions you have installed and make sure you’re familiar with what they do.
Tip: The Mac App Store is the safest and easiest way to discover and install extensions. The extensions are reviewed by Apple, and they update automatically when “Install app updates” is selected in App Store preferences.
Get Safari extensions
Choose Safari > Safari Extensions, then browse the available extensions in the App Store. When you find one you want, click the button that shows Get or the price, then click the button again to install or buy the extension.
Manage your extensions
Choose Safari > Preferences, click Extensions, then do any of the following:
Turn an extension on or off: Select or deselect the extension’s checkbox.
Note: You get a warning if you turn on an extension that is known to slow down browsing.
Change an extension’s settings: Select the extension, then select or deselect settings.
Remove an extension: Uninstall the extension, or delete the app that contains the extension.
Installing extensions, and turning them on or off, may take effect immediately or after you go to a new webpage or refresh the current page.
Important: The first time you open Safari, you get warnings about extensions that slow down browsing or are no longer supported:
Extensions that slow down browsing: The extensions will be turned off. You can turn on the extensions in Safari preferences.
Developer-signed .safariextz-style (legacy) extensions: The extensions won’t load and no longer appear in Safari preferences. You can’t turn them on.