# ProxyContain

> Proxycontain is a Firefox extension that integrates Firefox Contextual Identities (Containers) with per-container proxying and HTTP header manipulation. It is designed for web application security testing and penetration testing workflows.

Canonical page: [https://chrome-stats.com/d/proxycontain](https://chrome-stats.com/d/proxycontain)

## Overview

- **ID:** `proxycontain`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Diego Fernando
- **Category:** privacy-security,tabs
- **Daily users:** 6
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 1.7
- **Last updated:** 2026-08-18
- **First published:** 2026-01-02
- **Size:** 282 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/proxycontain/)

## Description

This extension allows you to:
+ Create, open, and delete containers
+ Assign a proxy to a specific container
+ Clear cookies, local storage, and session storage
+ Add or replace custom headers for specific containers
+ Highlight Burp requests (<a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/5add78127bb8f3874664cbf7b4f63e4744628b40c7ddd79cf2c9e2c98e795050/https%3A//github.com/dfuribez/crypto-stripper" rel="nofollow">requires Crypto Stripper</a>)

The source code can be found at:
<a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/4741c96419a104e7550d42a00826e6d2ff0f810cc1baf64e1b7d51b0ff7b9efb/https%3A//github.com/dfuribez/proxycontain" rel="nofollow">https://github.com/dfuribez/proxycontain</a>

## Rankings

- #41,077 — Overall
- #84 — contain
- #194 — wifi proxy
- #204 — proxy
- #237 — contact

## Permissions and access

### Permissions

- `activeTab`
- `contextualIdentities`
- `cookies`
- `webRequest`
- `webRequestBlocking`
- `<all_urls>`
- `proxy`
- `storage`
- `scripting`
- `tabs`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

- [Privacy Containers](https://chrome-stats.com/d/privacy-containers) — 1 users
- [Contained Proxy](https://chrome-stats.com/d/contained-proxy) — 1 users
- [Container proxy](https://chrome-stats.com/d/container-proxy) — 5,693 users, 4.78 / 5
- [Container & Extension Proxy](https://chrome-stats.com/d/container-extension-proxy) — 15 users
- [ProxyFlow Containers](https://chrome-stats.com/d/proxyflow-containers) — 2 users
- [ProxyFire](https://chrome-stats.com/d/proxyfire) — 5 users
- [Container Proxy v1.0.3](https://chrome-stats.com/d/container-proxy-v1-0-3) — 9 users
- [ContainIt](https://chrome-stats.com/d/containit)
- [Smart Containers](https://chrome-stats.com/d/smart_containers)
- [Container Interceptor](https://chrome-stats.com/d/container-interceptor) — 5.00 / 5
- [Lightweight Container Proxy](https://chrome-stats.com/d/lightweight-container-proxy-02) — 1 users
- [ZeroX](https://chrome-stats.com/d/zerox) — 3 users, 5.00 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/proxycontain)