Content Safety Lock

Name: Content Safety Lock
Author: Dan Wright

By: Dan Wright

Web content blocker to detect sites that have voluntarily self-labeled as containing sensitive content.

Download

Install

Features & Capabilities

Monitors sites where publishers have voluntarily self-labeled their content as unsafe and blocks those pages. Works for the following sites:

Any site that has included certain standard headers in their HTML
Age verification sites / Age verification popups or redirects.
Any sites that honor "Prefer: safe" http request headers.
Google (force safe search)
Bing (strict mode)
Yahoo (strict mode)
YouTube (strict or moderate mode)
Tumblr (Block "mature" posts)
Reddit (filter out "NSFW" content)
Etsy (block "mature" tagged products)
Redbubble (mature content)
TeePublic (explicit content)
Zazzle (R-rated products)
itch.io (adult content)
eBay (Sexual Wellness category)
Amazon (Sexual Wellness category)
Patreon (18+ creators)
Shopify stores (age-gated content)

User Growth & Download Statistics

Add-on

By:

Dan Wright

Daily users:

2 -1

Version:

1.4.3 Last updated: 2026-06-01

Version code:

6287647

Creation date:

2025-10-26

Risk:

Permissions:

Content scripts matches:

<all_urls>

Size:

150.27KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-18

Compare stats and ranking:

Ranking

# 63,210 ▼ 10,189

Other rankings

#90 in shopify keyword 28 ▲

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:

Dan Wright

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/content-safety-lock/

Website:

https://github.com/dwright/content-safety-lock/issues

Permission Change History

2025-12-11: Version 1.2.1 → 1.2.2

Remove Host permissions: <all_urls>

Add Permissions: <all_urls>

Is Content Safety Lock 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.

Content Safety Lock requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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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.

Content Safety Lock may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

Risk likelihood analysis details

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