# CRX Installer

> Install Chrome extension to Zen/Firefox nightly/Librewolf

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

## Overview

- **ID:** `crxinstaller`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** FoxRefire
- **Category:** web-development,download-management
- **Daily users:** 2,603
- **Weekly downloads:** 355
- **Rating:** 4.73 / 5 (30 ratings)
- **Version:** 3.3
- **Last updated:** 2025-11-27
- **First published:** 2024-09-17
- **Size:** 81 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/crxinstaller/)
- **Website:** [https://github.com/FoxRefire/ChromeXPIPorter](https://github.com/FoxRefire/ChromeXPIPorter)

## Description

CRX Installer helps you port Chrome extensions to Firefox-family browsers, including Zen, Firefox Nightly, Firefox Developer Edition, and Librewolf. It provides a guided path for cross-browser installation and compatibility.

Important: For Firefox-based browsers other than Zen, you may need to set xpinstall.signatures.required to false in about:config. Use this tool at your own risk; installing untrusted extensions can pose security risks. Source code: https://github.com/FoxRefire/ChromeXPIPorter

## Rankings

- #1,849 — Overall
- #159 — Download Management
- #199 — Web Development
- #1 — install
- #1 — uninstall
- #11 — gallery

## Permissions and access

### Permissions

- `management`
- `tabs`
- `contextualIdentities`
- `storage`

### Host permissions

- `*://clients2.google.com/*`
- `*://clients2.googleusercontent.com/*`

### Content script matches

- `chromewebstore.google.com`

## 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).

## Review summary

CRX Installer lets Firefox Nightly users install Chrome Web Store extensions, and even works on Android Nightly and forks like Floorp, acting as a replacement for the old Chrome Store Foxified. Reviews praise the core capability and ease of use, while noting it cannot fix regular Firefox’s restrictions. A major caveat is the need to set xpinstall.signatures.required to false, which raises security concerns and isn’t default. Some users also report Zen Browser compatibility issues and mixed reliability across environments. Overall, a useful workaround with clear caveats.

### Pros

- Enables installing Chrome Web Store extensions in Firefox Nightly (and some forks like Floorp) and on Android Nightly.
- Works well in Firefox Nightly and Android Nightly, circumventing regular Firefox restrictions.
- Functions as a replacement for the now-defunct Chrome Store Foxified, delivering familiar workflow.
- Simple to use once installed, with a straightforward usage flow.
- Cross-browser compatibility, including Floorp, per user reports.

### Cons

- Does not work in regular Firefox due to Mozilla restrictions.
- Requires disabling xpinstall.signatures.required (xpinstall) to install non-repo add-ons; not enabled by default and carries security concerns.
- Inconsistent compatibility on Zen Browser, with some users reporting it doesn't work there.
- Reliability can vary across environments, with some installations failing or behaving differently.

## Similar extensions and apps

- [ChromeXPIPorter](https://chrome-stats.com/d/chromexpiporter) — 14 users
- [Get CRX Ported](https://chrome-stats.com/d/get-crx-ported) — 21 users
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Source: [Chrome-Stats](https://chrome-stats.com/d/crxinstaller)