Proxifier Chrome Extension

A Chrome extension that forces proxy usage for specified websites using your SOCKS5/HTTP proxy server.

Features

• Manifest V3 compatible
• SOCKS5 and HTTP proxy support
• Per-website proxy configuration with automatic subdomain matching
• Domain-based toggle functionality via popup
• Cross-browser settings synchronization
• Visual icon indicators with custom 'P' design
• Organized icon assets in dedicated folder
• Simplified interface - no enable/disable switches

Installation

1. Open Chrome and navigate to chrome://extensions/
2. Enable "Developer mode" in the top right corner
3. Click "Load unpacked" and select this directory
4. The extension should now appear in your extensions list

Configuration

1. Click the Proxifier icon in your Chrome toolbar
2. Click "Open Settings" or right-click the extension icon and select "Options"
3. Configure your proxy settings:
   • Proxy Host: vps.j4.gl (default)
   • Proxy Port: 1080 (default for SOCKS5)
   • Proxy Type: Choose between SOCKS5 or HTTP
   • Target Websites: Add websites (one per line) that should use the proxy

Initial Setup Required

1. Configure Proxy: Go to Options → Enter your proxy server details
   • Host: Your proxy server address
   • Port: Your proxy server port (default: 1080)
   • Type: Choose SOCKS5 or HTTP
2. Add Domains: Enter top-level domains (subdomains included automatically)

Testing

1. Setup: First configure your proxy in Options
2. Navigate to any website (e.g., https://google.com)
3. Click the Proxifier extension icon → Click "Add to Proxy"
4. Icon should turn blue and traffic routes through proxy
5. Click "Remove from Proxy" → Icon turns gray, direct connection
6. Test by visiting websites to verify proxy routing

Usage

• Popup Toggle: Click the extension icon to open popup, then click "Add to Proxy"/"Remove from Proxy"
• Visual Feedback: Icon changes immediately based on current domain's proxy status
  • Gray icon with 'P': Current domain not using proxy
  • Blue icon with 'P': Current domain using proxy
• Always-On Proxy: Proxy is automatically enabled when domains are in the list (no manual on/off)
• Settings: Right-click extension icon → Options for detailed configuration
• Domain Management: Add/remove domains via popup or options page
• Smart Subdomain Handling: Adding j4.gl automatically includes cdn.j4.gl, api.j4.gl, etc.

How It Works

The extension uses Chrome's proxy API with PAC (Proxy Auto-Configuration) scripts to route traffic for specified websites through your proxy server while allowing direct connections for other sites.

Subdomain Matching

The extension automatically extracts top-level domains and applies proxy settings to all subdomains:

• Visit cdn.j4.gl → Adds j4.gl to proxy list
• Applies to: j4.gl, api.j4.gl, cdn.j4.gl, www.j4.gl, etc.
• Visit maps.google.com → Adds google.com to proxy list
• Applies to: google.com, maps.google.com, drive.google.com, mail.google.com, etc.

Special Handling: Recognizes common country domains like .co.uk, .com.au, etc.

Permissions

• proxy: Required to configure proxy settings
• storage: Store extension settings
• activeTab: Access to test functionality
• declarativeNetRequest: Enhanced network request handling