# 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.

Canonical page: [https://chrome-stats.com/d/siteblocker-2](https://chrome-stats.com/d/siteblocker-2)

## Overview

- **ID:** `siteblocker-2`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** LionByte Software SRL
- **Category:** tabs
- **Daily users:** 79
- **Weekly downloads:** 20
- **Version:** 4.4.0
- **Last updated:** 2026-08-28
- **First published:** 2025-02-28
- **Size:** 1015 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/siteblocker-2/)
- **Website:** [https://siteblocker.app](https://siteblocker.app/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/siteblocker-2/privacy/](https://addons.mozilla.org/firefox/addon/siteblocker-2/privacy/)

## Description

**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.

## Rankings

- #12,985 — Overall
- #12 — schedule
- #59 — ad-blocking
- #74 — easy
- #83 — website blocker
- #116 — password-protected

## Permissions and access

### Permissions

- `tabs`
- `storage`
- `cookies`
- `contextMenus`
- `alarms`

### Host permissions

- `*://*.siteblocker.app/`
- `https://vcsepqcovzfybflbvsar.supabase.co/*`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension privacy policy URL may be invalid

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

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- [Distraction Block](https://chrome-stats.com/d/distraction-block) — 22 users, 4.00 / 5
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- [DigitalZen – Smart Focus & Website Blocker](https://chrome-stats.com/d/digitalzen) — 541 users, 4.84 / 5
- [Site Blocker Plus](https://chrome-stats.com/d/site-blocker-plus)
- [TabFence: Time Based Site Blocker](https://chrome-stats.com/d/deepfocus-site-blocker) — 4 users, 5.00 / 5
- [Keep Me Focus](https://chrome-stats.com/d/keep-me-focus) — 10 users
- [Unplug: Simple Site Blocker](https://chrome-stats.com/d/unplug-simple-site-blocker) — 179 users, 5.00 / 5
- [focuscape Website Blocker](https://chrome-stats.com/d/focuscape-website-blocker) — 5 users, 5.00 / 5
- [Focus Time - Productivity Blocker](https://chrome-stats.com/d/focus-time-productivity)

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Source: [Chrome-Stats](https://chrome-stats.com/d/siteblocker-2)