Open Headers

Name: Open Headers
Author: Daniel T

By: Daniel T

Modify HTTP traffic, record browser sessions & sync team rules. Open source, fully offline, zero telemetry.

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Features & Capabilities

Intercept and rewrite HTTP traffic in real time, record full browser sessions, and sync rule sets with your team through Git — everything runs locally, nothing leaves your machine.

Inject or remove any request/response header on the fly. Block or redirect URLs by pattern. Inject scripts and CSS into any page. Header values can be pulled dynamically from local files, env variables, or HTTP endpoints — useful when you need tokens or config that change between environments.

Recording goes beyond a network tab: it captures requests, console output, DOM events, and storage changes together in one seekable timeline. Export to JSON for programmatic replay or video to drop in a bug report.

Team sync works through any Git repo — commit your rule sets, branch per environment, and share a join link. Secrets stay encrypted on each machine; only the rule structure gets committed.

No telemetry. No account. No cloud. MIT licensed and fully open source.

Requires the OpenHeaders desktop app → https://openheaders.io Docs → https://docs.openheaders.io

User Growth & Download Statistics

Add-on

By:

Daniel T

Daily users:

Version:

4.1.4 Last updated: 2026-04-04

Version code:

6207798

Creation date:

2025-04-21

Risk:

Permissions:

Host permissions:

<all_urls>
file:///*

Size:

764.81KB

Email:

co*****@openheaders.io

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-03

Compare stats and ranking:

Ranking

# 51,081 ▼ 169

Other rankings

#147 in header keyword 40 ▲ 1

For Developers

Monetize with App Pass Boost with Extension Booster

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:

Daniel T

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/open-headers/

Email:

co*****@openheaders.io

Website:

https://openheaders.io

Publisher Change History

2026-03-19: co*****@tirzuman.com to co*****@openheaders.io

Upgrade to see full email

Permission Change History

2026-03-19: Version 2.1.0 → 3.2.0

Add Permissions: webRequestBlocking webNavigation activeTab scripting downloads cookies

2025-05-28: Version 1.5.0 → 2.0.0

Add Permissions: webRequest

2025-05-16: Version 1.3.0 → 1.4.0

Add Permissions: declarativeNetRequestWithHostAccess

2025-05-01: Version 1.1.0 → 1.3.0

Remove Host permissions: ws://127.0.0.1:59210/* http://127.0.0.1:59210/*

Add Permissions: tabs

Remove Permissions: scripting

Is Open Headers 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.

Open Headers requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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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.

Open Headers may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

Risk likelihood analysis details

High This extension has recently changed publisher email (might be a transfer in ownership)
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