Language: English (US)

Name: Language: English (US)
Rating: 4.1425 (877 reviews)
Author: Firefox

By: Firefox

Firefox Language Pack for English (US) (en-US)

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Features & Capabilities

Easily set Firefox to US English with the official English (US) Language Pack. This extension ensures your browser interface, menus, and settings appear in accurate American English, providing a smooth and localized browsing experience. Ideal for users who prefer en-US for clarity and consistency. Compatible with the latest versions of Firefox, this language pack seamlessly integrates without impacting browser performance.

User Growth & Download Statistics

Add-on

By:

Firefox

Daily users:

2,396,806 -1,432

Rating:

4.14

(877)

Version:

131.0.20241011.205646 Last updated: 2026-07-10

Version code:

5825061

Creation date:

2012-11-11

Risk:

Size:

556.33KB

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-11

Compare stats and ranking:

Ranking

# 3

Other rankings

#1 in language keyword 45 #4 in usb keyword 12 #34 in plan keyword 12 ▼ 1

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Firefox

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/english-us-language-pack/

User Reviews

Most reviewers are positive, calling the add-on 'perfect' or otherwise satisfied. A few users report problems: installation/compatibility or general failures, and at least one notes spellchecker/dictionary issues with plurals. Overall sentiment is favorable but with a small portion of users experiencing functionality or spelling-handling issues.

Pros

Generally well-liked — multiple users call it 'perfect' or 'perfecto'.
Many users report no problems or find it satisfactory ('can't find anything wrong', 'Not bad').
Short, positive endorsements imply it's simple and effective for typical use.

Cons

A minority report functionality/compatibility problems (cannot install on Nightly or 'Don't work').
Spellchecking/dictionary issues with plurals — some users had to add words like 'automations' manually.

Recent reviews

by Fi*****, 2026-06-23

by Fi*****, 2026-06-15

by t9*****, 2026-06-01

View all user reviews ›

Is Language: English (US) Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Language: English (US) does not require any sensitive permissions.

Risk impact analysis details

Low This permission has no access or impact on the user's system or data, thus carrying no risk.

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Language: English (US) has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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