RegEx Blocklist

Name: RegEx Blocklist
Rating: 4.6 (5 reviews)
Author: Aaron Erhardt

By: Aaron Erhardt Add-on

Filter HTTP requests with Regular Expressions

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-08-20

Rating:

4.60

(5)

Version:

2.0

Last updated: 2020-12-01

Features & Capabilities

RegEx Blocklist is a Firefox add-on that enables easy blocking of URLs using Regular Expressions. It not only stops pages from loading but also blocks images, scripts, style sheets, fonts, and more. With support for RegEx flags, an additional allowlist, easy testing of the blocklist, high performance, low RAM usage, and automatic dark mode, this open-source add-on provides a powerful solution for filtering HTTP requests.

User Growth & Download Statistics

Add-on

By:

Aaron Erhardt

Daily users:

Rating:

4.60

(5)

Version:

2.0 Last updated: 2020-12-01

Version code:

5143138

Creation date:

2020-05-29

Risk:

Permissions:

Size:

95.90KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-08-20

Compare stats and ranking:

Ranking

# 25,212 ▼ 48

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Aaron Erhardt

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/regex-blocklist/

Website:

https://github.com/AaronErhardt/Regex-Blocklist

User Reviews

Excellent.

by Fi*****, 2025-11-15

This blocker works... And that's all. It's not the smallest of them all, and it definitely is not the easiest to use. Regex rules must be inserted one by one, with no way to save or restore the list. It's not practical the way it is, now. A better approach would be to use a textarea to edit the rules (one per line, for example), then the save/restore functions wouldn't be really necessary.

by Cy*****, 2025-07-30

View all user reviews ›

Is RegEx Blocklist Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

RegEx Blocklist requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

RegEx Blocklist has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
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Good **** ********* *** **** **** *******