Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of Lightweight Blocker

Lightweight Blocker by SiGe

A lightweight and secure site blocker, which respects your privacy.

0 (0 reviews)0 (0 reviews)
1 User1 User
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
Main options area.
About this extension
A lightweight and secure site blocker, which respects your privacy.

A minimalist, lightweight site blocker extension for Google Chrome, with privacy and security in mind, for productivity.
  • minimalist: the UI and the feature set are extremely basic. The blocker needs to do one thing and do it well: blocking unwanted pages.
  • lightweight: the extension must be extremely fast, ensuring no noticeable delay when loading pages.
  • private: the extension doesn't collect any data.
  • secure: there should be no security holes and security issues with the application.

To ensure these quadruple attributes, we avoid using any third-party libraries and prioritize simplicity and effectiveness in every aspect.
In that way, we can ensure that the extension doesn't have security holes or doesn't collect any
private data.

The whole extension is open source, under MIT license, at: https://github.com/SiGe11/Lightweight-Blocker-Extension



How to use?

You can configure which pages to block from the Options menu (accessed by right-clicking the extension's icon).
You can list the pages to be blocked in the text area. These can be separated with spaces, commas or semicolons. The blocker distinguishes between subdomains. You should specify all subdomains, even 'www'.

By default, the blocker is inactive. You can activate it by left-clicking on the icon of the extension and clicking on the
extension's current status.



FAQ

Why do I see the loaded page for some seconds before it is blocked?

To ensure the speed the extension checks the pages for blocking asynchronously. This way it has a quasi-zero impact on pages where
that should be blocked.



Changelog

https://github.com/SiGe11/Lightweight-Blocker-Extension/releases
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Access browser tabs

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Support site
  • Support Email
Version
1.4.0
Size
21.73 KB
Last updated
14 days ago (Nov 8, 2025)
Related Categories
  • Other
License
MIT License
Version History
  • See all versions
Tags
  • content blocker
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Browsers

  • Desktop
  • Mobile
  • Enterprise

Products

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.