Stop-it

By: Leonardo Sedevcic

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.

This add-on was removed from Firefox Add-ons Store on 2026-06-16

Features & Capabilities

Stop-it is a reliable Chrome extension designed to block pornographic content, scams, malware, and other dangerous sites, ensuring a safer internet experience. Trusted by thousands, it offers seamless protection without user intervention, making it ideal for homes, schools, and public spaces. Founded by Leonardo Sedevcic in 1998 and regularly updated through 2020, Stop-it remains a top choice for parental control and online security.

With Stop-it, users can browse confidently without exposure to unethical or harmful websites. Its no-configuration approach provides peace of mind by automatically filtering out dangerous content and cyber threats, promoting safer digital environments for all ages.

User Growth & Download Statistics

Add-on Privacy & Security Education

By:

Leonardo Sedevcic

Daily users:

Rating:

Version:

1.9.87 Last updated: 2019-05-02

Version code:

3665509

Creation date:

2014-09-29

Risk:

Permissions:

http://*/*
https://*/*
webRequest
webNavigation
cookies
*://*.google.com/
*://*.duckduckgo.com/
*://*.yahoo.com/
*://*.yandex.com/
*://*.bing.com/

Size:

20.42KB

Email:

st*****@hotmail.com

URLs:

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-16

Compare stats and ranking:

Other platforms

(v)

- 0.00

(0)

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Leonardo Sedevcic

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/stop-it/

Email:

st*****@hotmail.com

Website:

https://www.stop-it.be/

User Reviews

Users praise Stop‑it for reliably blocking adult content, enforcing SafeSearch, and being lightweight. Major complaints repeated across reviews: it blocks YouTube and other legitimate sites without a whitelist, lacks password protection (so children can disable it), and has inconsistent behavior for some users. Request for customization (site exceptions/whitelist) is a frequent theme.

Pros

Effectively blocks porn/NSFW content and filters search results
Enables or enforces Google SafeSearch (including in private browsing)
Works across languages and blocks foreign-language explicit searches
Lightweight and easy to install, low memory usage

Cons

Blocks YouTube videos and comment sections unexpectedly with no way to whitelist YouTube
No whitelist/customization to allow specific sites (e.g., gambling or trusted sites)
No password or lock — easy for users to disable the add‑on
Sometimes blocks legitimate non‑explicit sites (reports include Coinbase and other useful sites)
Inconsistent behavior for some users — a few report it doesn’t work at all

Recent reviews

blocks youtube videos for no reason. no way to whitelist youtube. i would give it 5 stars if it would just block explicit sites and let me watch youtube.

by Fi*****, 2025-09-03

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 Fi*****, 2025-03-07

doesn't work at all

by op*****, 2024-02-22

View all user reviews ›

Is Stop-it Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

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

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Stop-it may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

Risk likelihood analysis details

Critical This extension is not longer available in the store

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