HTTP Header Mangler

Name: HTTP Header Mangler
Rating: 4.2222 (9 reviews)
Author: Peter Nilsson

By: Peter Nilsson

HTTP Header Mangler inserts HTTP headers on a per host basis.

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Features & Capabilities

HTTP Header Mangler is a powerful Chrome extension that allows users to insert HTTP headers selectively on a per-host basis. Users can define rules using simple strings or regular expressions to target specific hosts, making it highly customizable for advanced HTTP header manipulation.

With support for multiple headers per rule and the ability to delete headers by assigning empty values, HTTP Header Mangler offers fine-grained control over the HTTP requests your browser sends. It's particularly useful for developers and testers who need to modify headers dynamically. The extension is open-source and maintained on GitHub for transparency and contributions.

User Growth & Download Statistics

Add-on Developer Tools Privacy & Security

By:

Daily users:

Rating:

Version:

1.1.4resigned1 Last updated: 2024-04-25

Version code:

5726303

Creation date:

2014-04-04

Risk:

Permissions:

Size:

10.78KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-19

Compare stats and ranking:

Ranking

# 9,683 ▼ 112

Other rankings

#15 in header keyword 42 #40 in insert keyword 33 #122 in manga keyword 25 ▼ 3#214 in reader keyword 73 ▼ 9#227 in example keyword 36 ▼ 4

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:

Peter Nilsson

Firefox Add-ons Store

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

Website:

https://github.com/disptr/httpheadermangler

User Reviews

by 全民*****, 2025-04-08

by 远离*****, 2025-02-22

I can modify the "Accept" header in outgoing HTTP requests in Firefox 129, so it still works. It would be nice if syntax errors in the rules would be shown.

by cw*****, 2024-08-27

View all user reviews ›

Is HTTP Header Mangler 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 Mangler 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 Mangler 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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