HTTP Header Plugin

Name: HTTP Header Plugin
Author: Paul Pepper

Adds custom HTTP headers to requests based on user-defined rules. Automatically add or modify HTTP request headers based on URL matching rules. Supports contains, wildcard, and regex patterns. All rules are stored locally — no data is transmitted.

Overview

Firefox Add-ons Store

Daily users

4 ▼ 1

Data as of 2026-08-05

Version:

1.0.1

Last updated: 2026-02-26

Features & Capabilities

"Add HTTP Header" lets you define rules that automatically inject or override HTTP request headers on outgoing network requests.

Features: • Add new headers or override existing ones for matching requests • Three URL matching modes: Contains (simple substring), Wildcard (* and ?), and Regular Expression • Rules take effect immediately — no browser restart needed • Clean options page to add, edit, and delete rules • Privacy policy displayed directly in the Options UI

How it works: The extension listens to outgoing requests via the webRequest API. When a request URL matches one of your configured rules, the specified header is added or updated before the request is sent. All rules are stored in your browser's local storage and never transmitted anywhere.

User Growth & Download Statistics

Add-on

By:

Paul Pepper

Daily users:

4 -1

Version:

1.0.1 Last updated: 2026-02-26

Version code:

6159448

Creation date:

2026-02-23

Risk:

Permissions:

Size:

67.76KB

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-08-05

Compare stats and ranking:

Ranking

# 47,962 ▼ 4,394

Other rankings

#88 in header keyword 24 ▼ 12#91 in plugin keyword 40 ▼ 8#220 in override keyword 11 ▼ 26#232 in plug keyword 27 ▼ 17

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:

Paul Pepper

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/http-header-plugin/

Website:

https://github.com/paulpepper

Is HTTP Header Plugin 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.

HTTP Header Plugin 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.

HTTP Header Plugin is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

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