SiteBlocker: Easy Blocking and Scheduling Firefox

SiteBlocker: Easy Blocking and Scheduling

SiteBlocker helps you stay focused by blocking distracting websites. Create custom blocklists, schedule restrictions, and take control of your browsing habits—all with a simple and lightweight Firefox extension.

Features & Capabilities

SiteBlocker helps you reduce distractions and build better browsing habits by blocking websites that interrupt your focus. Create customizable blocklists for social media, news, entertainment, and other time-wasting sites, then enable or disable each list whenever needed.

Use whitelist mode for focused work sessions, schedule restrictions by day or time, and quickly block pages from Firefox’s right-click context menu. SiteBlocker also includes password protection, inspirational quotes on blocked pages, dark mode, and cross-browser syncing across Chrome and Firefox. Its lightweight design makes it easy to manage browsing access and stay productive.

User Growth & Download Statistics

By:
LionByte Software SRL
Daily users:
79 7
Version:
4.4.0 Last updated: 2026-08-28
Version code:
6443900
Creation date:
2025-02-28
Firefox add-on GUID:
extension@siteblocker.app
Firefox add-on numeric ID:
2898908
Weekly download count:
20
Firefox on Android:
No
Risk:
High risk impact High risk likelihood
Permissions:
Host permissions:
  • *://*.siteblocker.app/
  • https://vcsepqcovzfybflbvsar.supabase.co/*
Content scripts matches:
  • <all_urls>
Size:
1015.20KB
Email:
he*****@siteblocker.app
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-09-08
Compare stats and ranking:

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:
LionByte Software SRL
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/siteblocker-2/
Email:
he*****@siteblocker.app
Website:
https://siteblocker.app

Permission Change History

2026-06-06: Version 3.0 → 4.1.0
Add Permissions: alarms
2025-07-25: Version 2.1 → 3.0
Add Host permissions: https://vcsepqcovzfybflbvsar.supabase.co/*

Is SiteBlocker: Easy Blocking and Scheduling 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.

SiteBlocker: Easy Blocking and Scheduling 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.
  • Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
  • Medium ******* ****** ** *** ********* ******** **************** ***********
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.

SiteBlocker: Easy Blocking and Scheduling may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

Risk likelihood analysis details
  • High This extension privacy policy URL may be invalid
  • High **** ********* *** ******** ******* ** *** **** ****** *** ******* *** *** ** ****** ** *****
  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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