Block Site

By: Ray

A customizable, password-protected website blocker and redirector.

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Features & Capabilities

Block Site is a powerful Chrome extension designed to help users control and customize web access. With password protection, users can block unwanted websites, redirect specific sites to new destinations, and even display custom messages on blocked pages. Advanced features include wildcard and regex matching, reverse mode to allow only certain sites, time and date-based blocking for scheduled restrictions, and auto-closing of blocked tabs.

The extension also enhances privacy by preventing blocked websites from tracking network activity, closes annoying pop-ups immediately, and supports easy toggling of blocking via the context menu. Its managed storage compatibility allows for overwriting configurations, suitable for professional or managed environments. Comprehensive support and feature suggestions are available through official web resources and GitHub.

User Growth & Download Statistics

Add-on Privacy & Security

By:

Ray

Daily users:

72,284 -692

Rating:

3.90

(523)

Version:

0.5.7 Last updated: 2025-11-21

Version code:

6075931

Creation date:

2017-10-18

Risk:

Permissions:

activeTab
storage
notifications
alarms
contextMenus
declarativeNetRequestWithHostAccess
idle

Host permissions:

<all_urls>

Content scripts matches:

<all_urls>

Size:

171.88KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-23

Compare stats and ranking:

Ranking

# 262 ▼ 1

Other rankings

#10 in Tabs

#15 in Appearance

#17 in Privacy & Security

#1 in block keyword 76

#1 in item keyword 52

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Other platforms

Block Site (v0.5.8)

59,422 4.40

(45)

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:

Ray

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/block-website/

Website:

https://webextension.org/listing/block-site.html

Permission Change History

2025-05-14: Version 0.5.2.1 → 0.5.3

Add Host permissions: <all_urls>

Add Permissions: idle

Remove Permissions: <all_urls> webRequest webRequestBlocking

2024-05-27: Version 0.5.1.1 → 0.5.2

Add Permissions: declarativeNetRequestWithHostAccess

2023-10-02: Version 0.5.1 → 0.5.1.1

Remove Permissions: declarativeNetRequestWithHostAccess

2023-09-20: Version 0.4.9 → 0.5.1

Add Permissions: declarativeNetRequestWithHostAccess

User Reviews

Users praise Block Site for effective, free, and open-source blocking of sites with a straightforward interface. However several users report reliability problems after browser updates and private mode changes, as well as cumbersome rule management that complicates editing. A subset of reviews expresses security concerns about authenticity and unexpected prompts. Overall, the add-on is useful for basic blocking and privacy, but may require patience with updates and rule handling.

Pros

Effectively blocks listed sites and pages as intended.
Free to use with no subscription, lightweight and simple.
Open-source with active maintenance and bug fixes.
Useful for improving browser security/privacy and helping curb social media usage.
Simple, straightforward extension without bloat.

Cons

Reliability and compatibility issues after browser/OS updates, including private mode not working.
Rule management is cumbersome: cannot edit rules inline and regex changes can mis-format, requiring full purge and reload.
Occasional security/authenticity concerns raised by users, including prompts and suspicion about the vendor.

Recent reviews

by *****, 2026-04-25

by su*****, 2026-04-23

by ra*****, 2026-04-23

View all user reviews ›

Is Block Site 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.

Block Site 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.
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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.

Block Site has earned a good reputation and can be trusted.

Risk likelihood analysis details

Low This extension was updated more than 6 months ago. Older versions are more likely to be stable and safe.
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