BlockNSFW – Porn & Adult Content Filter

Name: BlockNSFW – Porn & Adult Content Filter
Rating: 4.2632 (19 reviews)
Author: Monolab Co.

BlockNSFW helps you browse the web safely by automatically blocking pornographic and adult websites. With smart filtering and site detection, it prevents unwanted adult content from loading in your browser.

Download

Install

Features & Capabilities

BlockNSFW is a lightweight browser extension that automatically blocks pornographic and adult websites before they load. It combines domain blocklists, smart keyword detection in titles and meta descriptions, subreddit/forum blocking, and optional explicit image scanning to stop NSFW content from displaying. Designed to run locally with minimal performance impact, it prioritizes privacy by not tracking or sending your data off-device.

Ideal for parents, students, and professionals who want a distraction-free, family-safe browsing experience. Quick to set up and configurable, BlockNSFW gives you control over what loads in your browser while keeping browsing fast and private.

User Growth & Download Statistics

Add-on Privacy & Security Kids Content

By:

Daily users:

Rating:

Version:

1.6.0 Last updated: 2026-06-02

Version code:

6289009

Creation date:

2025-09-13

Risk:

Permissions:

Host permissions:

<all_urls>

Content scripts matches:

<all_urls>

Size:

699.33KB

Email:

al*****@gmail.com

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-03

Compare stats and ranking:

Ranking

# 2,069 ▼ 51

Other rankings

#239 in Social & Communication ▼ 9

#243 in Search Tools ▼ 8

#370 in Privacy & Security ▼ 7

#106 in safe keyword 46

#118 in environment keyword 16 ▼ 2

Upgrade to see more rankings

Other platforms

BlockNSFW – Porn & Adult Content Blocker (v1.5.1)

1,000 5.00

(6)

For Developers

Monetize with App Pass Boost with Extension Booster

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:

Monolab Co.

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/blocknsfw-porn-adult-content/

Email:

al*****@gmail.com

Permission Change History

2026-06-03: Version 1.5.1 → 1.6.0

Add Permissions: declarativeNetRequest

Remove Permissions: webRequest webRequestBlocking

2026-03-28: Version 1.4.2 → 1.5.0

Add Permissions: webRequest webRequestBlocking

2025-10-31: Version 1.1.0 → 1.2.0

Add Host permissions: <all_urls>

Remove Permissions: webRequest webRequestBlocking <all_urls>

User Reviews

Blocks spicy stuff VERY well but too much , alot of other stuff that isnt nsfw gets blocked , including youtube comments for some reason

by Er*****, 2026-06-02

Absolutely love it, but for the past few days, suddenly some Youtube Videos from channels like Sorted Foods etc get blocked saying that network restrictions block the Video. It came down to this Add On. Once i deactivate it, the videos load again

by BJ*****, 2026-05-21

by Fi*****, 2026-05-04

View all user reviews ›

Is BlockNSFW – Porn & Adult Content Filter 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.

BlockNSFW – Porn & Adult Content Filter requires a few 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.
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****

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.

BlockNSFW – Porn & Adult Content Filter is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******