# Block Site

> A customizable, password-protected website blocker and redirector.

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

## Overview

- **ID:** `block-website`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Ray
- **Category:** privacy-security,appearance,tabs
- **Daily users:** 73,015
- **Weekly downloads:** 1,980
- **Rating:** 3.89 / 5 (534 ratings)
- **Version:** 0.6.2
- **Last updated:** 2026-09-03
- **First published:** 2017-10-18
- **Size:** 187 KB
- **Data as of:** 2026-09-12
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/block-website/)
- **Website:** [https://webextension.org/listing/block-site.html](https://webextension.org/listing/block-site.html)

## Description

Block Site is a powerful Chrome extension designed to help users control and customize web access. With password protection, users can block unwanted websites, redirect specific sites to new destinations, and even display custom messages on blocked pages. Advanced features include wildcard and regex matching, reverse mode to allow only certain sites, time and date-based blocking for scheduled restrictions, and auto-closing of blocked tabs.

The extension also enhances privacy by preventing blocked websites from tracking network activity, closes annoying pop-ups immediately, and supports easy toggling of blocking via the context menu. Its managed storage compatibility allows for overwriting configurations, suitable for professional or managed environments. Comprehensive support and feature suggestions are available through official web resources and GitHub.

## Rankings

- #268 — Overall
- #10 — Tabs
- #16 — Appearance
- #17 — Privacy & Security
- #1 — block
- #1 — item

## Permissions and access

### Permissions

- `activeTab`
- `storage`
- `notifications`
- `alarms`
- `contextMenus`
- `declarativeNetRequestWithHostAccess`
- `idle`

### Host permissions

- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Very low 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 was recently updated in the past month. New updates 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).

## Review summary

Users praise Block Site for effective, free, and open-source blocking of sites with a straightforward interface. However several users report reliability problems after browser updates and private mode changes, as well as cumbersome rule management that complicates editing. A subset of reviews expresses security concerns about authenticity and unexpected prompts. Overall, the add-on is useful for basic blocking and privacy, but may require patience with updates and rule handling.

### Pros

- Effectively blocks listed sites and pages as intended.
- Free to use with no subscription, lightweight and simple.
- Open-source with active maintenance and bug fixes.
- Useful for improving browser security/privacy and helping curb social media usage.
- Simple, straightforward extension without bloat.

### Cons

- Reliability and compatibility issues after browser/OS updates, including private mode not working.
- Rule management is cumbersome: cannot edit rules inline and regex changes can mis-format, requiring full purge and reload.
- Occasional security/authenticity concerns raised by users, including prompts and suspicion about the vendor.

## Similar extensions and apps

- [Block Site](https://chrome-stats.com/d/block-site-2) — 5,622 users, 3.80 / 5
- [Precision Site Blocker](https://chrome-stats.com/d/precision-site-blocker)
- [Block Websites](https://chrome-stats.com/d/block-websites) — 27 users
- [Website Blocker](https://chrome-stats.com/d/website-blocker-by-sleekaddons) — 5 users
- [Privacy Focused Site Blocker (by Avrodh.com)](https://chrome-stats.com/d/avrodh) — 534 users, 4.78 / 5
- [vBlocker](https://chrome-stats.com/d/vblocker1) — 14 users
- [Block these URLs, Domains or Keywords](https://chrome-stats.com/d/block-urls-domains-keywords) — 35 users, 4.50 / 5
- [Privacy Focused Website Blocker (by Avrodh.com)](https://chrome-stats.com/d/avrodh-site-blocker) — 392 users, 4.83 / 5
- [Site Blocker Pro](https://chrome-stats.com/d/site-blocker-pro) — 1 users
- [Block URLs, Domains or Keywords](https://chrome-stats.com/d/block-urls-domains-or-keywords) — 296 users, 3.92 / 5
- [Redirect Blocker](https://chrome-stats.com/d/redirectblocker) — 896 users, 1.64 / 5
- [BlockSite](https://chrome-stats.com/d/blocksite) — 32,344 users, 3.71 / 5

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