# Block Websites

> Block distracting or unwanted websites. Add a site to your blocklist and any visit to it (and its subdomains) is redirected to a clean block page. Toggle blocking on or off anytime. No accounts, no tracking, fully local.

Canonical page: [https://chrome-stats.com/d/block-websites](https://chrome-stats.com/d/block-websites)

## Overview

- **ID:** `block-websites`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** murtbang
- **Category:** privacy-security
- **Daily users:** 26
- **Weekly downloads:** 5
- **Version:** 1.0.0
- **Last updated:** 2026-06-21
- **First published:** 2026-06-18
- **Size:** 15 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/block-websites/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/block-websites/privacy/](https://addons.mozilla.org/firefox/addon/block-websites/privacy/)

## Description

Block Websites is a simple, private site blocker that helps you stay focused by keeping distracting or unwanted sites out of reach.

<strong>Features</strong>
- Add any site to your blocklist from the toolbar popup, or block the site you're currently on with one click.
- Blocks the domain and all its subdomains (e.g. <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/3b0aa1a488ff9809554e48743a9b592944d358a0ffa3f88e394cd3ddfc36894b/http%3A//facebook.com" rel="nofollow">facebook.com</a> also covers www. and <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/006758b35bdf20b54c7df885e23d88537b6b1a55b8e1ac4fff8ee9cb02425a71/http%3A//m.facebook.com" rel="nofollow">m.facebook.com</a>).
- Redirects blocked visits to a clean local "Site blocked" page.
- Master on/off switch — pause blocking without losing your list.
- Remove sites individually whenever you like.

<strong>Privacy</strong>
This extension does not collect, store, or transmit any personal data. Your blocklist is stored locally in your browser and never leaves your device. There are no analytics, no remote servers, and no network requests of any kind.

## Rankings

- #22,018 — Overall
- #39 — website blocker
- #90 — website
- #223 — site
- #228 — block

## Permissions and access

### Permissions

- `declarativeNetRequest`
- `storage`

### Host permissions

- `<all_urls>`

## Safety

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

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

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

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