# C2 Password

> A highly secure password management solution to store, sync, and safeguard your credentials.

Canonical page: [https://chrome-stats.com/d/c2-password](https://chrome-stats.com/d/c2-password)

## Overview

- **ID:** `c2-password`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Synology Inc.
- **Category:** privacy-security
- **Daily users:** 1,919
- **Weekly downloads:** 30
- **Rating:** 4.65 / 5 (88 ratings)
- **Version:** 3.0.0
- **Last updated:** 2026-06-22
- **First published:** 2022-05-04
- **Size:** 4.48 MB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/c2-password/)
- **Website:** [https://account.synology.com/support](https://account.synology.com/support)

## Description

C2 Password is a free and highly secure password management Chrome extension designed to safeguard your credentials and personal data. It encrypts all information locally before syncing across an unlimited number of devices, ensuring that only you have access to your sensitive data.

Key features include automatic login autofill, secure password saving, and a built-in random password generator to enhance your online security. Additionally, C2 Password supports autofilling of form data for seamless online shopping and account setup processes. With C2 Password, you save time and maintain peace of mind thanks to robust encryption and convenient access options through browser extensions, apps, and web portals.

## Rankings

- #2,214 — Overall
- #14 — password
- #38 — solution
- #39 — password-protected
- #58 — tutorial
- #68 — variety

## Permissions and access

### Permissions

- `activeTab`
- `alarms`
- `clipboardWrite`
- `contextMenus`
- `idle`
- `privacy`
- `scripting`
- `storage`
- `unlimitedStorage`
- `webNavigation`
- `webRequest`
- `webRequestBlocking`
- `<all_urls>`

### Content script matches

- `<all_urls>`
- `profile.c2.c2go.dev`
- `profile.c2.synology.com`
- `profile.c2test.synology.com`

## Safety

- **Risk impact:** Very high risk impact
- **Risk likelihood:** Moderate 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).

## Review summary

Reviews consistently praise C2 Password as a reliable, secure, and easy-to-use password manager with strong cross-platform support and a comprehensive feature set. Users value its reliability, security, and the warning system for staying on top of their data, plus trust in the Synology brand backing. The add-on is described as 'just works' across Mac, Android, and iOS, making it a popular choice for long-term password management.

### Pros

- Reliable and secure password management.
- Cross-platform compatibility across Android, iOS/macOS, and Windows.
- Comprehensive, solid feature set and easy to use.
- Trusted branding (Synology) and strong security posture.
- Security-focused features, including a warning system.

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- [SecureSafe Pass Extension](https://chrome-stats.com/d/securesafe-pass-extension) — 209 users, 1.00 / 5
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- [Pcrypt](https://chrome-stats.com/d/pcrypt) — 8 users, 5.00 / 5
- [CyberGhost: Password Manager](https://chrome-stats.com/d/cyberghost-password-manager) — 245 users, 4.25 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/c2-password)