Block Site

A customizable, password-protected website blocker and redirector.

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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.

Productivity Privacy & Security Utilities

By:

Ray

Daily users:

73,394+ -77

Rating:

3.91

(489) 1 new ratings

Version:

0.5.3 Last updated: 2025-05-14

Version code:

5944127

Creation date:

2017-10-18

Risk:

Permissions:

activeTab
storage
notifications
alarms
contextMenus
declarativeNetRequestWithHostAccess
idle

Host permissions:

<all_urls>

Size:

171.73K

URLs:

Website

Full description:

See detailed description ⏷

Source:

Firefox Browser Add-ons

Updated:

15 hours ago

Ranking

# 255 ▲ 1

Other rankings

#9 in Tabs

#14 in Appearance ▲ 1

#15 in Privacy & Security

#1 in block keyword 78

#1 in item keyword 39

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Other platforms

Block Site (v0.5.3)

52,540+ 4.40

(39)

User reviews

The Block Site Firefox add-on helps users block distracting websites and is praised for its simplicity and customization options. However, multiple users report that in recent updates it no longer functions properly. A significant issue is that blocking sites can corrupt or reset open tabs' URLs, causing loss of browsing sessions. Some users find the interface less intuitive, contributing to difficulty in usage.

Pros

Effectively blocks websites to help users control browsing habits.
Simple and easy to use with a straightforward user interface.
Allows customization of blocking rules to fit user needs.

Cons

Stops working or has functionality issues in recent versions.
When blocking certain sites, it alters or corrupts open tabs' URLs, leading to loss of tab content.
User interface can be unintuitive, making setup and use difficult for some users.

Recent reviews

by megmyers, 2025-05-12

Does what it needs to do.

by Spyero, 2025-04-27

Excellent. Thanks a lot Ray, nice extension.

by Bout's Morgan, 2025-04-27

View all user reviews ›

Extension safety

Risk impact

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

Block Site 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.
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Low **** ********* *** **** **** ****** ******* ********** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******

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