AutoLogin Extension

A Chrome extension that enables automatic login to websites by securely saving and auto-filling your credentials.

Features

• Automatic login to your favorite websites
• Secure local storage of credentials with encryption
• Support for multiple accounts per website
• User-friendly interface for credential capture
• Open source for transparency and security

Host Permissions Justification

This extension requires broad host permissions (http://*/* and https://*/*) for the following reasons:

1. User Choice: Users can capture login credentials from any website they trust. The extension does not predefine which sites can be automated.

2. Dynamic Automation: Auto-login functionality needs to work on any site where users have saved credentials.

3. User Control: All credential capture and form automation is triggered by explicit user action - never automatically.

4. Security Measures:

   • Credentials are stored locally with encryption
   • No automatic form submission without user consent
   • Master password protection available
   • All code is open source for transparency

5. Privacy: The extension does not send any data to external servers. All data is stored locally in your browser.

Browser Compatibility

The extension is available in two versions:

Manifest V2 (For Brave Browser)

• Supports basic authentication
• Works on Brave browser
• Not compatible with latest Chrome versions
• Download: autologin-mv2.zip

Manifest V3 (For Chrome)

• Compatible with latest Chrome versions
• Does not support basic authentication due to Chrome's Manifest V3 policies
• Recommended for Chrome users
• Download: autologin-mv3.zip

Installation

To install dependencies:

bun install

To build the extension:

bun run bundle.js

Development

This project was created using bun init in bun v1.1.38. Bun is a fast all-in-one JavaScript runtime.

Security

• All credentials are encrypted before storage
• The extension only activates on explicit user action
• Login forms are analyzed locally without sending data to external servers
• Source code is available for security review at https://github.com/muthuishere/autologin

Contributing

Contributions are welcome! Feel free to submit issues and pull requests.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Copyright (c) 2025 Muthukumaran Navaneethakrishnan

Author

Muthukumaran Navaneethakrishnan GitHub: https://github.com/muthuishere