# Locale Switcher

> Lets you quickly switch the browser locale to test localization on your website.

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

## Overview

- **ID:** `locale-switcher`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Locale Switcher
- **Category:** web-development
- **Daily users:** 2,033
- **Weekly downloads:** 51
- **Rating:** 4.36 / 5 (11 ratings)
- **Version:** 1.3.0
- **Last updated:** 2025-03-01
- **First published:** 2022-01-10
- **Size:** 107 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/locale-switcher/)
- **Website:** [https://github.com/locale-switcher](https://github.com/locale-switcher)

## Description

## Locale Switcher Chrome Extension

Locale Switcher is a powerful browser extension designed for developers and testers to quickly change their browser locale and test website localization effortlessly. It modifies the `navigator.language`, `navigator.languages`, and `Accept-Language` headers to simulate different language settings.

### Key Features
- Compatible with Chrome and Firefox browsers
- Supports over 700 languages and variations
- Locale changes applied on a per-tab basis
- Ability to favorite your most used locales for quick access
- Fully keyboard shortcut enabled (Windows: Ctrl+Shift+L, Mac: Cmd+Shift+L), no mouse required

The extension requires permissions to alter web traffic headers and access tabs to manipulate language properties. Locale Switcher is open-source and maintained actively under the MIT License, making localization testing smoother and more efficient for developers.

## Rankings

- #2,143 — Overall
- #231 — Web Development
- #6 — kitchen
- #29 — pitch
- #30 — switch
- #51 — license

## Permissions and access

### Permissions

- `storage`
- `declarativeNetRequest`
- `activeTab`
- `scripting`
- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Low 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 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/locale-switcher)