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.

Stop-it: Best Parental Control and Porn Blocker Add-on
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.
Add-on stats
Manifest V2
Weekly download count: 49
Firefox on Android: No
Permissions:
- http://*/*
- https://*/*
- webRequest
- webNavigation
- cookies
- *://*.google.com/
- *://*.duckduckgo.com/
- *://*.yahoo.com/
- *://*.yandex.com/
- *://*.bing.com/
Size: 20.91K
Email: st*****@hotmail.com
URLs: Website
Full description: See detailed description
Ranking
User reviews
Pros
- Blocks pornographic and explicit content effectively.
- Works well with Google SafeSearch in private browsing mode.
- Low memory usage and easy installation.
- Useful for parental controls by blocking unwanted sites.
Cons
- Randomly blocks non-explicit websites such as YouTube and Coinbase.
- Lacks customization options for whitelisting certain sites.
- No password protection to prevent disabling the add-on.
- Not effective on social networks where explicit content can still appear.
Most mentioned
- Blocks unwanted adult content effectively.
- Frequent issues with overblocking non-explicit sites.
- Need for whitelisting or customization options.
- Desire for password protection to secure the add-on from being disabled.
User reviews
I wanted it to be good, and I gave it a fair chance. But this extension is actual garbage. It randomly blocks YouTube videos for no reason and at other times it blocks the comment sections of YouTube videos. Why? None of these videos are even slightly explicit. Kept happening for months. And beyond that it blocks actually useful websites, that again, have 0% explicit ontent. Websites such as Coinbase.com are blocked by this app. I have confirmed this app was responsible for all the above- disable the extension and YouTube and Coinbase immediately start working. Do not use this extension.
by Firefox user 13091522, 2025-03-07
doesn't work at all
by operative charlie, 2024-02-22
Add-on safety
Risk impact
Stop-it requires a lot of sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood
We don't have sufficient data to confidently determine the risk likelihood of Stop-it. Use it at your own risk.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
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