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This article explains how to prevent children from using Firefox, block websites or filter website content in Firefox that may be offensive or inappropriate for children.

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This article explains how to block websites or filter website content in Firefox that may be offensive or inappropriate for children.

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Firefox checks the parental controls on your computer and sets itself to Prefer:Safe mode. This automatically turns on the safety feature on each website your child visits, as long as you have the parental controls active on your computer.

This feature can be turned off only through your password-protected parental settings on your operating system, so your child will not be able to deactivate this feature through the browser.

To turn on parental controls on your computer, please see the support documentation for your operating system or see the following instructions.

Firefox checks the parental controls on your computer and sets itself to Prefer:Safe mode. This automatically turns on the safety feature on each website your child visits, as long as you have the parental controls active on your computer. This feature can be turned off only through your password-protected parental settings on your operating. Firefox makes it to version 54, Mozilla dubs it 'the best Firefox' Mozilla has announced the latest update to its popular web browser. Firefox is now up to version number 54 with changes that, according to the company, make it 'the best Firefox in history' thanks to an important performance tweak in the form of multiprocess support when loading tabs. Firefox by default shares data to: Improve performance and stability for users everywhere. Interaction data: Firefox sends data about your interactions with Firefox to us (such as number of open tabs and windows; number of webpages visited; number and type of installed Firefox Add-ons; and session length) and Firefox features offered by Mozilla or our partners (such as interaction with Firefox.

  • Set up family features on Windows 10 at microsoft.com
  • (Windows 7): How To Use Parental Controls in Windows 7 at howtogeek.com and Safeguarding Windows 7 – Parental Controls at microsoft.com
  • (Windows Vista): Use Parental Controls to Filter Websites in Windows Vista at howtogeek.com

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Built-in Parental Controls let you block websites or filter website content in Firefox or any other browser.

  • Set up parental controls on Mac at apple.com

Windows XP doesn't have built-in parental controls. For such a feature, you can download Windows Live Essentials for Windows XP at microsoft.com containing Windows Live Family Safety, a web filtering software.

For a list of web filtering software, see List of content-control software at wikipedia.org.

This addons.mozilla.org search for parental control lists several extensions that can provide content blocking.

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Note: Extensions can be easily disabled by a knowledgeable user and don't work in other browsers.

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Based on information from Parental controls (mozillaZine KB)