Overhead — HTTP Header Editor

Name: Overhead — HTTP Header Editor
Rating: 5 (1 reviews)
Author: theconcept technologies

Modify HTTP request & response headers. Switch environments (LIVE/DEV). 100% local, no tracking, open source.Modify HTTP request & response headers and switch environments (LIVE/DEV) in one click. 100% local, no tracking, open source.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-07-25

Rating:

5.00

(1)

Version:

0.1.5

Last updated: 2026-07-22

Features & Capabilities

Overhead is the header editor you can actually trust.

Add, modify, or remove HTTP request and response headers while you build and test web apps — and switch whole environments (LIVE, DEV, Staging, …) with a single click. Manage everything right from the toolbar popup: quick inline editing, header-name autocomplete, and one-click templates for the headers you reach for most (Authorization, User-Agent, X-Forwarded-For, CORS, and more).

Built to be trusted

100% local — your rules never leave your device. No tracking, no analytics, no ads. Ever. Open source, so anyone can verify it. Uses Chrome's declarativeNetRequest engine, so the extension can't even read your traffic — it only declares rules the browser applies. Features

Request & response headers: set, append, or remove. Environment groups with mutually-exclusive switching (LIVE ↔ DEV). URL wildcard / regex / resource-type conditions. Optional per-header display labels. Import your existing ModHeader setup in one click. Light & dark, keyboard-friendly, fast. Free and open source, from theconcept technologies.

User Growth & Download Statistics

Add-on

By:

theconcept technologies

Daily users:

Rating:

5.00

(1)

Version:

0.1.5 Last updated: 2026-07-22

Version code:

6368284

Creation date:

2026-07-15

Risk:

Permissions:

Host permissions:

<all_urls>

Size:

78.04KB

Email:

su*****@theconcept-technologies.com

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-25

Compare stats and ranking:

Ranking

# 58,742 ▲

Other rankings

#33 in modheader keyword 10 ▲ #146 in header keyword 24 ▲ #174 in editor keyword 21 ▲ #181 in environment keyword 15 ▲

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:

theconcept technologies

Firefox Add-ons Store

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

Email:

su*****@theconcept-technologies.com

Website:

https://theconcept-technologies.com

Is Overhead — HTTP Header Editor 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.

Overhead — HTTP Header Editor 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.

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.

Overhead — HTTP Header Editor is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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