Stop-it The best porn blocker, parental control software. This add-on provides protection for a safer browsing experience. Protect yourself from scams, adult contents, malwares, hacks & threats.

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What is Stop-it?

Stop-it is a Firefox add-on designed to block pornographic and dangerous content, providing a safer browsing environment. Used by thousands, it is a highly recommended tool for homes, corporations, schools, and public spaces. Your protection is guaranteed, with users unable to access any harmful sites. Established by Leonardo Sedevcic in 1998, the program is frequently updated to counter new threats.

Users: 547 ▲ 1
Version: 1.9.87 (Last updated: 2019-05-02)
Creation date: 2014-09-29
Weekly download count: 51
Firefox on Android: No
Risk impact: Very high risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
  • http://*/*
  • https://*/*
  • webRequest
  • webNavigation
  • cookies
  • *://*
  • *://*
  • *://*
  • *://*
  • *://*
  • See more
Size: 20.91K
URLs: Website
Stats date:

Other platforms

Stop-it (v1.9.88)
4.10 (31) 5,302
Not available on Edge
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Stop-it is an add-on who BLOCKS porn, dangerous & fakes contents of all kind and makes your browsing experience safer.

With several thousand people using Stop-it so far, it’s become the most promising tool for homes, public places, schools & companies for protection against unethical sites and criminal attack.

Stop-it is a project started & created by Leonardo Sedevcic started in 1998 and now updated in 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 .


Stop-it has no user functionality, users can enjoy a browsing experience without encountering any dangerous website.

This ensures users cannot have access to the most dangerous websites and provides protection and peace of mind for a safer browsing experience.

User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Blocks pornographic content
  • Works well with Google SafeSearch
  • No high memory usage
  • Allows customization options
  • Easy to install
  • Powerful in blocking content
  • Does not have an option to toggle the "delete search history & cache" option
  • Does not block certain gambling sites
  • Not password protected
  • Easy to disable
  • Lacks whitelist functionality
  • Some users find it immature
Most mentioned
  • Blocks pornographic content
  • Easy to disable
  • Google SafeSearch
  • Customization options
  • Not password protected
  • Whitelist functionality
  • Gambling sites
  • High memory usage
View all user reviews
Risk impact

Stop-it is very risky to use and it requires a lot of sensitive permissions. Avoid installing this add-on unless you absolutely trust this publisher.

Risk likelihood

Stop-it has earned a fairly good reputation and likely can be trusted.

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