Removing an extension from Safari takes less than a minute

Open Safari, then go to Safari > Settings (or Safari > Preferences on older macOS versions). Click the Extensions tab. Find the extension you want to remove, click it once to select it, then click the Uninstall button. The extension is gone when ready — you do not need to restart Safari or your computer.

If you cannot see the Extensions tab, you may be looking at the wrong settings window. Make sure you opened Settings from the Safari menu at the top of your screen, not from System Settings or another process.

Key Takeaways

  • Extensions are removed through Safari > Settings > Extensions, not through System Settings or the App Store.
  • Uninstalling an extension removes it completely and when ready — no restart required.
  • You can turn an extension off without removing it by unchecking the box next to its name.
  • If an extension is not showing in your list, it may be installed in a different Safari profile or on a different user account on your Mac.

The difference between turning off and removing an extension

Safari lets you disable an extension without deleting it. In the Extensions tab, uncheck the box next to the extension's name. The extension stays installed but stops running. This is useful if you want to keep it but do not need it right now.

Removing (uninstalling) an extension deletes it entirely. You would need to reinstall it from the App Store if you wanted it back later. Use uninstall when you no longer want the extension at all.

What happens to your data when you remove an extension

When you uninstall an extension, Safari removes the extension itself but does not automatically clear any data it stored — passwords, settings, or browsing history it may have tracked. If the extension stored sensitive information and you want that deleted too, you have two options.

First, check the extension's own settings or website to see if it offers a way to clear your data before you uninstall. Some extensions have a "delete my data" button in their preferences. Second, you can clear Safari's website data for that extension's domain by going to Safari > Settings > Privacy, clicking Manage Website Data, searching for the extension's name, and clicking Remove. This is most useful if the extension was tracking your browsing or storing login information.

Extensions that will not uninstall

If an extension is grayed out or the Uninstall button does not work, the extension may be managed by your organization or by parental controls. On a work Mac, your IT department may have installed extensions that employees cannot remove. On a personal Mac with parental controls enabled, a parent or guardian may have locked certain extensions in place.

If you are the account holder and parental controls are on, go to System Settings > Parental Controls, unlock the settings with your password, and look for Safari restrictions. If this is a work computer, contact your IT support team — they can tell you whether the extension can be removed and by whom.

Removing extensions installed from the App Store versus elsewhere

Most Safari extensions come from the App Store and are removed through Safari's Settings as described above. Some older extensions or developer tools may have been installed differently — for example, directly from a developer's website or through a separate installer.

If you installed an extension outside the App Store and it still appears in Safari's Extensions list, uninstall it from Safari first using the method above. Then check your Applications folder for any related app — some extensions come bundled with a companion process that may need to be deleted separately by dragging it to the Trash.

Removing extensions on iPhone and iPad

Safari on iPhone and iPad handles extensions differently than the Mac version. Go to Settings > Safari > Extensions, tap the extension you want to remove, and tap Remove. The process is the same — the extension is deleted when ready.

Note that extensions on iPhone and iPad are often limited compared to the Mac version. Some extensions available on Mac are not available for iOS, and some iOS extensions do not have all the features of their Mac counterparts.

Frequently Asked Questions

Will removing an extension speed up Safari?

Possibly, but usually not noticeably. Extensions that run constantly in the background — like password managers or ad blockers — can use memory and processing power. Removing them may free up a small amount of resources, but the difference is usually only visible if you have many extensions running at once or a very old Mac.

Can I remove an extension and then reinstall it later?

Yes. Go to the App Store, search for the extension by name, and install it again. Your Mac will remember your previous settings for some extensions, but not all — many extensions start fresh after reinstall, so you may need to set them up again.

What if I remove an extension by accident?

You can reinstall it from the App Store. There is no undo button, but uninstalling is not permanent. Search for the extension's name in the App Store and click Install to get it back.

Do I need to remove extensions before updating Safari?

No. Safari updates do not require you to remove extensions first. Extensions usually keep working after a Safari update, though occasionally an extension may break and need to be updated or reinstalled by its developer.

Can I remove multiple extensions at once?

No. Safari's Settings window lets you uninstall only one extension at a time. If you need to remove many extensions, you will need to click through each one individually.