1Password 7 MV3 EN

1Password 7 Legacy Extension v4.7.5 – Manifest V3 Edition

Overview

This is an unofficial, community-maintained port of the original 1Password Legacy Extension v4.7.5, updated to support Manifest V3 for ongoing compatibility with modern Firefox browsers.

Important Notice

⚠️ This extension is NOT officially developed or supported by AgileBits (1Password).

• A community preservation project created to maintain the legacy desktop app integration.
• A valid 1Password license from AgileBits is still required.
• Requires the 1Password Desktop Application (v4.x or compatible standalone version).
• This extension simply allows continued use of software you already own.

Why This Extension?

When AgileBits discontinued support for the classic 1Password browser extension, many users were left relying on their standalone desktop vaults.
This port ensures that those users can continue using their existing software with:

• Future compatibility through Manifest V3 compliance
• Preserved functionality for standalone desktop licenses
• No cloud dependency — fully offline operation

Features

Core Functionality

✅ Desktop App Integration

• Native messaging connection to the 1Password desktop app
• Secure access to local vaults
• No cloud or online account required

✅ Auto-Fill & Form Detection

• Automatic detection of login forms
• One-click username and password filling
• Works on all HTTP/HTTPS sites

✅ Browser Integration

• Toolbar button for quick access
• Context menu options
• Keyboard shortcut support
• Tab-level security control

✅ Manifest V3 Compliance

• Future-proof service worker architecture
• Modern permission model
• Compatible with Firefox 109.0+

✅ Security & Privacy

• Private/incognito mode support
• Secure native messaging protocol
• No telemetry, analytics, or data collection
• All credentials remain local

Technical Improvements (v4.7.5.90 MV3)

• ✅ Migrated from Manifest V2 to Manifest V3
• ✅ Replaced deprecated browserAction API with action
• ✅ Converted background page to service worker
• ✅ Added polyfills for legacy compatibility
• ✅ Introduced NoLegacy community branding

Installation Requirements

Prerequisites

1. 1Password Desktop App (v4.x or compatible standalone version)
2. Must be installed and properly configured
3. Local vault must be accessible
4. Valid 1Password License
5. A legitimate AgileBits license is required
6. Works with both standalone and subscription accounts
7. Firefox Browser
8. Version 109.0 or newer
9. Developer Edition or Nightly recommended for unsigned builds

Licensing

• 1Password software and trademarks are the property of AgileBits Inc.
• This project serves purely as a compatibility bridge, not a crack or bypass.
• A valid AgileBits license is required to use 1Password features.
• The project fully respects all intellectual property rights.

Purpose

This extension exists to:

• ✅ Preserve functionality of legitimately purchased software
• ✅ Maintain browser compatibility for older desktop versions
• ❌ Not to bypass licensing or enable unauthorized use

Disclaimer

This is an unofficial community project:

• Not affiliated with AgileBits or 1Password
• Provided “as is,” without warranty or official support
• Use at your own discretion and comply with AgileBits’ licensing terms