Block Site Firefox

Block Site

By: Allen
Easily block websites of your choice!

Features & Capabilities

Block Site is a versatile Chrome extension designed to help you block websites effortlessly. By simply right-clicking on any webpage and selecting "Block this website," the extension adds the entire domain to your block list for streamlined management. You can easily manage or remove blocked websites via the options page.

The extension also supports redirecting blocked domains to a URL of your choice, enhancing your browsing control. Additionally, Block Site allows blocking specific iframes by adding their URLs within the settings. Whether for productivity or safety, Block Site empowers users to tailor their internet experience with minimal setup.

For further assistance or to report issues, visit the official Block Site homepage. You can also watch a detailed YouTube review to learn more about its features.

User Growth & Download Statistics

Manifest V3 Add-on Privacy & Security
By:
Allen
Daily users:
5,511 -5
Rating:
3.78
(169)
Version:
0.2.4 Last updated: 2025-07-22
Version code:
5995255
Creation date:
2016-11-07
Risk:
Moderate risk impact Moderate risk likelihood
Permissions:
Host permissions:
  • *://*/*
Size:
58.82KB
Email:
al*****@yahoo.com
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-17
Compare stats and ranking:

Other platforms

Chrome
Block Site (v0.2.4)
100,000 3.84 (279)
Edge
Block Site (v0.2.4)
43,253 4.20 (19)

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:
Allen
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/block-site-2/
Email:
al*****@yahoo.com
Website:
https://mybrowseraddon.com/block-site.html

Permission Change History

2024-09-24: Version 0.1.9 → 0.2.3
Add Host permissions: *://*/*
Add Permissions: declarativeNetRequest
Remove Permissions: *://*/* webRequest notifications webRequestBlocking

User Reviews

Users praise the add-on for its simple, fast UI and effective site blocking, including cookie blocking. However recurring issues include unreliable right-click blocking, a two-site limit, confusion about domain blocking, and lack of Android support, with occasional reports of non-working behavior.
Pros
  • Simple, fast and easy-to-use UI
  • Effectively blocks sites/domains as requested
  • Blocks cookies for blocked domains
  • Unblocks easily via the toolbar (X)
  • Blocks ads (when used for ad-blocking)
Cons
  • Right-click blocking is not consistently available or functional
  • Two-link limit: cannot block more than two sites (third overwrites second)
  • Cannot block domains or confusion about blocking domains
  • Android support is lacking/not available
  • Some users report non-working behavior
Recent reviews
by Fi*****, 2026-04-11

This blocker is simple and great to use. It's UI is more simplified. This blocker blocking all the sites which one needs to block. This app has improved. When you right click to block site then it's actually blocked but to see effect you have to close the tab. You can also block manually in it's settings page.
by Ro*****, 2025-12-28

All the other 'site blockers' with extra features failed to block a site. This one does what it's asked.
by as*****, 2025-11-24
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.
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 is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
Extension Guard
Extension Guard

Discover every extension in use, analyze risks, and enforce blocking policies with Extension Guard

Secure Your Browser
Upgrade to see full risk analysis details

Best Block Site Alternatives

Here are some Firefox add-ons that are similar to Block Site: