Request RegEx Filter

This Add-on will filter all HTTP requests (including requests for javascript files, images etc) based on the list of regular expressions the user provides. The addon works off of a Deny-list configured via the Options/Settings page for the Addon
What is Request RegEx Filter?
Request RegEx Filter is a Firefox add-on that filters all HTTP requests using a denylist of regular expressions. Users can configure the denylist via the Options/Settings page of the add-on.
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Add-on stats

By: Henry Lu
Users: 13
Rating: 5.00 (4)
Version: 1.1resigned1 (Last updated: 2024-04-25)
Creation date: 2017-09-19
Weekly download count: NaN
Firefox on Android: Yes
Risk impact: High risk impact
Risk likelihood: Moderate risk likelihood
Manifest version: 2
Permissions:
  • webRequest
  • <all_urls>
  • storage
  • webRequestBlocking
Size: 10.40K
URLs: Website

Ranking

# 23620 ▼ 109
Other rankings
#19 in request keyword 20 ▲ 1 #161 in javascript keyword 44 ▲ 1

Other platforms

Not available on Chrome
Not available on Edge
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Add-on summary

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To configure this Add-on, Open the Add-ons/Extensions page of your browser or type "about:addons" in the address bar in Firefox.

Click on "Options" for the Request RegEx Filter add-on.

Then you can add or remove from the list of Regular Expressions that will denylist the http request.

For more details on how to write a regular expression, here are some resources:

For Example: Add the following regular expression to the denylist
  • http(s)?:\/\/ads[.]
and it will block all requests to websites that start with "ads." on http or https. this means any requests to get javascript or other content from http://ads.example.com would be blocked.

This regex is purely for demonstration purposes. The above Regular Expression has the limitation that any website starting with "ads." would be blocked. So if you legitimately want to be visiting a site with a domain name prefixed with "ads." you would avoid using this regex.

User reviews

simple, straight forwards and it just works
by Firefox user 14099140, 2021-01-17
by Rico Liebscher, 2020-05-24
by Firefox user 13420281, 2017-11-08
View all user reviews

Add-on safety

Risk impact

Request RegEx Filter requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk likelihood

Request RegEx Filter is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

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