[FSOCIETY] Digital-Mask: User-Agent Switcher

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A Google Chrome extension for full browser fingerprint spoofing — User-Agent, Client Hints, JS properties, Canvas, WebGL, and WebRTC IP leak protection.

Features

User-Agent Spoofing

• Replaces the User-Agent header at the network level.
• Simultaneously replaces all Client Hints headers.
• Replaces userAgentData in the JS page context.
• Supports Chrome, Edge, Opera, Firefox, Safari, Googlebot — each browser is accurately emulated.

Profile Database

• Built-in database of UA strings.
• Filter by category: Desktop / Mobile / Bots / Saved
• Random UA button from the active category.

Custom Profiles

• Enter any UA string manually.
• Auto-save support.
• List of saved profiles with quick selection.

Per-Site Rules

• Different UAs for different sites: google.com, *.youtube.com, *tracker*
• Rules take priority over the global setting.
• Enable/disable each rule individually.
• Patterns are automatically converted to valid DNR format.

Privacy Protection (PRIVACY tab)

Feature	Description
WebRTC Leak Protection	Blocks real IP leakage via WebRTC
JS Fingerprint	Spoofs standard browser parameters
Canvas Noise	Adds sub-pixel noise — breaks canvas fingerprinting
WebGL Spoof	Hides GPU vendor/renderer, replaces with typical Intel values
Timezone Sync	Synchronizes TimeZone with your real IP

Import / Export

• Export entire database to .txt (one UA per line) or .json (with per-site rules).
• Import from .txt and .json with deduplication.
• JSON export includes per-site rules.

Interface

• Language toggle: EN / RU
• Spoofing activity indicator
• Displays the real browser UA

Installation

Preferred option:

Go to the extension page on Google Chrome.

Local assembly:

1. Download or clone the repository
2. Open chrome://extensions
3. Enable Developer mode
4. Click Load unpacked
5. Select the extension folder

Permissions

Permission	Purpose
declarativeNetRequest	HTTP header modification
declarativeNetRequestWithHostAccess	Access to all hosts
storage	Saving settings and profiles
privacy	Managing WebRTC policy

Limitations

• IP reputation: If your IP is listed in VPN/datacenter provider databases — this extension won't help. That check happens server-side.
• Timezone for Date: Date.prototype methods depend on the OS system timezone — the extension only patches Intl.DateTimeFormat, which covers most detectors.
• After applying PRIVACY settings: active tabs must be reloaded.

Author

GitHub: provincialcxz