See what third-party apps are connected to your account. These apps can collect a lot of information from your Facebook profile.
Web: Settings → Apps
Android: Settings → Settings & Privacy → Account Settings → Apps
iOS: Settings → Accounts Settings → Apps
Turn off Facebook’s app platform. If you don't use Facebook apps, or haven't since 2012, you might just want to turn off the Facebook app platform.
Web: Settings → Apps → Apps, Websites and Plugins (press edit)
Android: Settings → Settings & Privacy → Account Settings → Apps → Platform (toggle off)
iOS: Settings → Accounts Settings → Apps
Limit Facebook tracking on other websites. Many major websites include Facebook tracking code that tells Facebook what sites you visit.
Web: Install a tracker blocker extension in your web browser, like Disconnect.me, Ublock, or EFF’s Privacy Badger
Android: Google doesn’t allow apps that block trackers in other applications in the Play Store, but Disconnect offers the ability to “sideload” a tracker blocker from its site. You’ll need to authorize Android to download apps from services other than the Play Store
iOS: The App Store offers several apps that blocks trackers, such as Crystal
Don’t share your location. The Facebook app also tracks your location, even when you're not using Facebook.
Web: Web browsers will generally ask before giving permission to a site to access geolocation. And we are not aware of Facebook asking permission to track location in browsers.
Android: Go to your phone (not Facebook) settings: Settings → Apps & notification → App permissions → Location (deselect Facebook)
iOS: Go to your phone (not Facebook) settings: Settings → Privacy → Location Services → Facebook (select Never)
See how advertisers target you on Facebook. Facebook offers a way to control the ads you see, but not a lot of people know about it.
Web: Settings → Ads
Android: Settings → Settings & Privacy → Account Settings → Ads
iOS: Settings → Accounts Settings → Ads