Try one of these articles:
- Does Firefox share my location with websites? Understand what information Firefox sends to web sites about your location and learn how to use and manage location-aware features of your browser.
- Block and unblock websites with parental controls on Firefox This article explains how to block websites or filter website content in Firefox that may be offensive or inappropriate for children.
- Disable or re-enable Pocket for Firefox The Pocket feature is included with Firefox by default. Learn how to disable or remove Pocket from Firefox and how to re-enable it.
- HTML5 audio and video in Firefox Firefox plays certain HTML5 audio and video content on web pages without a plugin. Learn about these media formats and how to manage them.