# masterpassword for Firefox

> Keep different passwords for every site you log into without having to remember anything but a single master password. And without the risk of your getting your password list stolen. MasterPassword is available for all your devices!

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

## Overview

- **ID:** `masterpassword-firefox`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** T.Tyridal
- **Category:** privacy-security
- **Daily users:** 484
- **Weekly downloads:** 18
- **Rating:** 4.15 / 5 (26 ratings)
- **Version:** 3.0.0
- **Last updated:** 2023-10-12
- **First published:** 2015-02-06
- **Size:** 233 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/masterpassword-firefox/)
- **Website:** [https://github.com/ttyridal/masterpassword-firefox/wiki](https://github.com/ttyridal/masterpassword-firefox/wiki)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/masterpassword-firefox/privacy/](https://addons.mozilla.org/firefox/addon/masterpassword-firefox/privacy/)

## Description

MasterPassword for Firefox solves the challenge of managing multiple passwords securely. Instead of remembering numerous passwords, users create one master password that mathematically generates unique passwords for every website. This method eliminates the need to store passwords anywhere, significantly reducing the risk of hacking or theft. Unlike traditional password managers or cloud-based solutions that store passwords and are vulnerable to breaches, MasterPassword crafts site-specific passwords on the fly, ensuring superior security.

Compatible across iOS, Android, Windows, Mac, Linux, and Firefox, this extension integrates seamlessly without disrupting existing password managers. It does not import custom passwords but complements other solutions for an enhanced password management experience. Users are advised to decline Firefox's prompt to save generated passwords to maintain the highest security level. Protect your online accounts effortlessly with MasterPassword for Firefox.

## Rankings

- #5,063 — Overall
- #42 — risk
- #56 — password
- #58 — password-protected
- #83 — wordpress
- #89 — firefox

## Permissions and access

### Permissions

- `activeTab`
- `scripting`
- `clipboardWrite`
- `storage`
- `alarms`
- `nativeMessaging`

## Safety

- **Risk impact:** Low risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- Allows reading and modifying clipboard content, which can be sensitive, posing a moderate privacy risk.
- 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

Users appreciate the simplicity and cross-device functionality of the Masterpassword for Firefox add-on, praising its ease of use without the need for accounts or sync. It offers better performance than similar Chrome extensions and features automatic password generation. However, recent issues include the add-on failing to open properly and lacking the ability to verify the master password upon entry, which are notable drawbacks reported by multiple users.

### Pros

- Simple and easy to use with only one master password to remember.
- Works well across multiple devices including PC, phone, and iPhone.
- No need for synchronization or creating an account to use the add-on.
- Automatic password generation and ability to save master password to OS vault enhances convenience and security.
- Better functionality compared to similar Chrome extension, especially in storing site settings.

### Cons

- Recently the add-on has stopped working properly, with popups closing instantly and preventing use.
- No option to verify or review the initially entered master password to confirm correctness.

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