# Container Traffic Control

> A powerful but simple rule based system, that will allow you to control which (Firefox) container, a website will open up in.

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

## Overview

- **ID:** `ctc`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** kau.sh
- **Category:** privacy-security,tabs
- **Daily users:** 15
- **Weekly downloads:** 3
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 26.2.2
- **Last updated:** 2026-02-06
- **First published:** 2025-09-23
- **Size:** 758 KB
- **Data as of:** 2026-09-18
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/ctc/)
- **Website:** [https://github.com/kaushikgopal/ff-container-traffic-control/](https://github.com/kaushikgopal/ff-container-traffic-control/)

## Description

Container Traffic Control makes Firefox's Multi-Account Containers even more powerful by automatically routing websites to the right container based on rules that you define.

Why Use Container Traffic Control?

There are various add-ons that attempt to control which websites open up in a container but it always felt (even with these add-ons), there was a level of control lacking, which would make you fight the container setup more than just use it smoothly.

I created this extension based on my own experience of using containers and various other add-ons. I came up with this mechanism of setting rules because it felt closest to how i wanted to leverage and use Containers.

How the Rules work
<ol><li>We list out all the existing containers</li><li>You start by marking the container as "open" or "restricted"</li><li>You provide a url pattern (either a simple url or complex regex - we accept both)
... now just use Firefox normally and CTC will do its thing</li></ol>
To understand containers and this setup read <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/2504395692dd8779133830567980f7214ebd0e2d7d8e143aa6aa433a4a6c337b/https%3A//kau.sh/blog/how-to-firefox/%23privacy-power-up-containers" rel="nofollow">my article</a>.

## Rankings

- #28,190 — Overall
- #13 — traffic
- #74 — contain
- #134 — contact
- #158 — control
- #179 — self control

## Permissions and access

### Permissions

- `webRequest`
- `webRequestBlocking`
- `tabs`
- `cookies`
- `contextualIdentities`
- `storage`
- `bookmarks`
- `menus`

### Host permissions

- `<all_urls>`

## Safety

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

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions 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).

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