# Web Site Filter

> A content filter for websites. It has a number of key words, which it tries to find on the web page. For each word found, a score is incremented. If a certain limit is passed, the page is blocked with a very simple message.

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

## Overview

- **ID:** `jsguardian`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** serv-inc
- **Category:** privacy-security
- **Daily users:** 56
- **Rating:** 4.11 / 5 (9 ratings)
- **Version:** 1.6.4
- **Last updated:** 2022-02-05
- **First published:** 2016-04-05
- **Size:** 57 KB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/jsguardian/)
- **Website:** [https://github.com/serv-inc/web-site-filter/issues](https://github.com/serv-inc/web-site-filter/issues)

## Description

Web Site Filter is a powerful Chrome extension designed to block unwanted website content based on a keyword scoring system. It scans webpages for specific trigger words, incrementing a score with each occurrence. When the score exceeds a predetermined limit, the page is blocked with a simple notification, ensuring that users are protected from undesirable content.

Built upon a robust regular expression set derived from the GPL-licensed DansGuardian, this filter offers an effective approach to content control. For enhanced security, it can be combined with complementary blockers like ProCon Latte or Fox Web Security, which block based on hard-coded words, URLs, or hostnames, leveraging services such as OpenDNS and Norton. Web Site Filter is ideal for users seeking customizable content filtering to improve safe browsing experiences.

## Rankings

- #15,253 — Overall
- #53 — site
- #185 — website
- #218 — film

## Permissions and access

### Permissions

- `tabs`
- `<all_urls>`
- `storage`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Low 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 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/jsguardian)