How do I choose what information to sync on Firefox?

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Action required: Update Firefox to maintain account sync post-March 31, 2024.

If you are running a version of Firefox equal to or older than Firefox 78 (general release or ESR) and you have a Mozilla account, you must follow these steps to ensure continued operation of your account in Firefox:

  1. Make sure you remember your password for your account on Firefox. If you do not have your password, you can use your account recovery keys to change your password. If you do not already have account recovery keys, you will need to reset your password without recovery keys.
  2. Backup your profile folder, just in case anything goes wrong.
  3. Update your Firefox browser.
    If you get an error when trying to update, you can reinstall Firefox.
  4. Sign back in to your account in the newly-updated Firefox.

Mozilla's Sync feature lets you synchronize bookmarks, add-ons, browsing history and other information across multiple devices. This article shows you how to choose these settings. For information on starting a Sync account or managing your devices, see How do I set up Sync on my computer?

What information can I share across my devices?

You can choose to sync the following information on your devices:

Manage Sync information on a computer

  1. In the Menu bar at the top of the screen, click Firefox and then select Preferences or Settings, depending on your macOS version.Click the menu button Fx89menuButton and select Settings.
  2. Click Sync from the menu options to open the sync settings panel.
    • If the Sync panel shows Syncing: ON, click Change…
    • If it shows Syncing: OFF, click Turn on Syncing… to turn Sync on.
  3. In the Choose What To Sync dialog that opens, select the check boxes next to the types of information you want to sync.
    Fx121ChooseWhatToSyncChoose what to sync panel
  4. Click Save Changes.

Manage Sync information on an Android device

  1. Tap the menu button.
    Firefox menu icon for android
  2. Tap your account. It should show your name or email address.
    Select my account
  3. Select the check boxes next to the types of information you want to synchronize.
    Choose what to sync simplified
    • Your changes will save automatically when you exit settings.

Manage Sync information on an iOS device

  1. Tap the menu button Menu hamburguer button at the bottom of the screen (the menu will be at the top right if you're using an iPad):
  2. Tap FX iOS Settings menu.
  3. Ensure you're signed in to your Mozilla account (your name will be displayed next to the account icon).
    Mozilla Account section for ios
  4. Adjust the toggle for the data categories you want to synchronize.
    Sync settings iOS
    • Your changes will save automatically when you exit settings.

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