# Chrome Mask

> Makes Firefox wear a mask to look like Chrome to websites that block Firefox otherwise.

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

## Overview

- **ID:** `chrome-mask`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** skyschub
- **Category:** web-development
- **Daily users:** 56,200
- **Weekly downloads:** 1,256
- **Rating:** 4.47 / 5 (152 ratings)
- **Version:** 10.1.0
- **Last updated:** 2026-07-26
- **First published:** 2024-06-28
- **Size:** 61 KB
- **Data as of:** 2026-09-05
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/chrome-mask/)
- **Website:** [https://github.com/skyschub/chrome-mask/issues](https://github.com/skyschub/chrome-mask/issues)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/chrome-mask/privacy/](https://addons.mozilla.org/firefox/addon/chrome-mask/privacy/)

## Description

Chrome Mask is a Firefox extension that enables users to toggle their browser's identity to appear as Google Chrome on specific websites. Unlike generic user agent spoofers, this extension selectively masks Firefox only on user-defined sites and automatically updates the spoofed Chrome version daily by querying an external API. It also adjusts other browser attributes like `navigator.vendor` and the global `chrome` object to pass common browser checks seamlessly.

This ensures compatibility with sites that block Firefox browsers, enhancing browsing accessibility without compromising user experience. With its smart OS detection and easy one-click toggle, Chrome Mask provides a simple yet powerful solution for Firefox users facing browser restrictions.

## Rankings

- #305 — Overall
- #11 — Web Development
- #1 — choose
- #1 — chrome
- #1 — chrome browser
- #1 — come

## Permissions and access

### Permissions

- `storage`
- `tabs`
- `webRequest`
- `webRequestBlocking`
- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Low 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 abnormal rating trend

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

## Review summary

Chrome Mask helps Firefox mimic Chrome, often boosting YouTube speed and usability and is praised for ease of use and solving issues for some users. However, it frequently breaks YouTube playback or disables subtitles, and compatibility is spotty on certain sites like F1 TV. Overall, it’s useful for specific workflows, but YouTube reliability and site compatibility are notable downsides.

### Pros

- Chrome disguise enables a Chrome-like experience on Firefox, giving users the best of both worlds.
- YouTube performance improves (faster loading and smoother usability) when the extension is active.
- Easy to use with a simple, one-click disguise to Chrome.
- Generally positive impact and problem-solving for some users (works well for certain workflows).

### Cons

- Subtitles/captions on YouTube frequently don’t work or disappear.
- YouTube playback can break or become inconsistent due to how the extension manipulates CORS.
- Not all sites are supported (e.g., F1 TV may not work with the extension).
- Inconsistent behavior on YouTube; some users report that it doesn’t work at all for YouTube.

## Similar extensions and apps

- [Chrome Simulator](https://chrome-stats.com/d/chrome-simulator) — 566 users, 4.67 / 5
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- [Standard User Agent](https://chrome-stats.com/d/standard-ua) — 1 users
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- [SmoothTube - User Agent Switcher](https://chrome-stats.com/d/smoothtube-user-agent-switcher) — 10 users, 2.00 / 5
- [Winston's User-Agent Switcher](https://chrome-stats.com/d/winston-s-user-agent-switcher) — 3 users, 5.00 / 5

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