# User-defined Block List Plus

> Specify a list of websites to block by entering their hostnames in the extension's preferences, separated by new lines.

Canonical page: [https://chrome-stats.com/d/user-defined-block-list-plus](https://chrome-stats.com/d/user-defined-block-list-plus)

## Overview

- **ID:** `user-defined-block-list-plus`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Deion
- **Category:** privacy-security
- **Version:** 2.0
- **Last updated:** 2024-05-28
- **First published:** 2024-05-28
- **Size:** 18 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/user-defined-block-list-plus/)

## Rankings

- #137,226 — Overall
- #137 — define

## Permissions and access

### Permissions

- `proxy`
- `storage`
- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate 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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- [ProxyBlocker](https://chrome-stats.com/d/proxyblocker)

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Source: [Chrome-Stats](https://chrome-stats.com/d/user-defined-block-list-plus)