# Configurable Containers

> One YAML file decides which Firefox container each site opens in: named containers where you want them, throwaways everywhere else.

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

## Overview

- **ID:** `configurable-containers`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Arlo
- **Category:** privacy-security,tabs
- **Version:** 2608.0.164
- **Last updated:** 2026-08-26
- **First published:** 2026-07-28
- **Size:** 175 KB
- **Data as of:** 2026-09-16
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/configurable-containers/)

## Description

Configurable Containers decides which Firefox container each site opens in, from one YAML file you edit as text.

Write a rule for the sites you want a named container for. Everything else opens in a fresh throwaway, cleaned up once you close its tabs.

<strong>What it does</strong>
<ul><li>A bare domain is the common case: it opens in a container named after it. Add detail for a different name, several domains in one container, or a choice between containers.</li><li>Single sign-on keeps working: identity providers stay in the container the login started from, so "Sign in with Google / Microsoft / Okta" does not break.</li><li>Sites you group together share one throwaway; an unrelated site gets a clean one.</li><li>A rule can offer several containers and let you pick.</li><li>Known link redirectors are not isolated, and the tab closes itself if it strands you on one.</li><li>Optional per-site cookies and content scripts, applied in the routed container.</li><li>Reopen the current tab in another container with Ctrl+Shift+O.</li></ul>
<strong>How you configure it</strong>

There is no settings screen — the YAML file is the whole interface. You edit it in the add-on's own editor (about:addons → Configurable Containers → Preferences). Saving checks the file and applies it at once; an invalid config is refused.

The shipped default routes nothing by name. It marks the few hosts where isolating would break something, and includes commented examples to start from.

<strong>Privacy</strong>

Nothing is collected and nothing is transmitted. Your configuration stays in your browser.

Source code and configuration reference: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/e126ab0bd352dc63a4df2e4db2edf133d0e3aa5f9d4a2afc67aeab30efb4ae9e/https%3A//github.com/ArloL/configurable-containers" rel="nofollow">github.com/ArloL/configurable-containers</a>

## Rankings

- #137,279 — Overall
- #61 — configure

## Permissions and access

### Permissions

- `webRequest`
- `webRequestBlocking`
- `webNavigation`
- `cookies`
- `storage`
- `tabs`
- `contextualIdentities`
- `notifications`
- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** High 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 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).

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- [Containacious](https://chrome-stats.com/d/containacious)
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- [Temporary Containers Plus](https://chrome-stats.com/d/temporary-containers-plus) — 501 users, 4.55 / 5
- [ContainerGate](https://chrome-stats.com/d/containergate) — 1 users
- [Container Picker](https://chrome-stats.com/d/container-picker) — 1 users

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