Fingerprint Flags

Multilogin X uses fingerprint masking flags to control how browser fingerprinting APIs behave. These flags determine what information websites can detect about the browser environment.

Flag Reference

Flag	Description	Impact
audio_masking	Masks AudioContext fingerprint	Prevents audio-based tracking
fonts_masking	Controls font enumeration	Prevents font-list fingerprinting
media_devices_masking	Masks camera/mic device IDs	Prevents device fingerprinting
screen_masking	Controls screen resolution info	Spoofs display properties
graphics_masking	Masks WebGL renderer/vendor	Prevents GPU fingerprinting
graphics_noise	Injects Canvas noise	Unique canvas hash per profile
webrtc_masking	Controls WebRTC IP exposure	Prevents real IP leaks
geolocation_masking	Spoofs GPS coordinates	Location matches proxy
timezone_masking	Masks timezone info	Timezone matches proxy region
locale_masking	Controls language/locale	Language matches profile setup
ports_masking	Masks port scanning results	Prevents local port detection
navigator_masking	Controls navigator API values	Platform/UA consistency

Masking Values

Each flag accepts one of these values:

Value	Behavior
mask	Apply masking based on the profile's generated fingerprint
real	Pass through real system values (no masking)
custom	Use explicitly provided custom values

Setting Flags During Profile Creation

{
  "name": "stealth-profile",
  "browser_type": "mimic",
  "os_type": "windows",
  "folder_id": "FOLDER_UUID",
  "parameters": {
    "fingerprint": {
      "flags": {
        "audio_masking": "mask",
        "fonts_masking": "mask",
        "media_devices_masking": "mask",
        "screen_masking": "mask",
        "graphics_masking": "mask",
        "graphics_noise": "mask",
        "webrtc_masking": "mask",
        "geolocation_masking": "mask",
        "timezone_masking": "mask",
        "locale_masking": "mask",
        "ports_masking": "mask",
        "navigator_masking": "mask"
      }
    }
  }
}

Recommended Configurations

Maximum Privacy

All flags set to mask -- best for anti-detection:

"flags": {
  "audio_masking": "mask",
  "fonts_masking": "mask",
  "media_devices_masking": "mask",
  "screen_masking": "mask",
  "graphics_masking": "mask",
  "graphics_noise": "mask",
  "webrtc_masking": "mask",
  "geolocation_masking": "mask",
  "timezone_masking": "mask",
  "locale_masking": "mask",
  "ports_masking": "mask",
  "navigator_masking": "mask"
}

Balanced (Recommended)

Common flags masked, screen left real for compatibility:

"flags": {
  "audio_masking": "mask",
  "fonts_masking": "mask",
  "media_devices_masking": "mask",
  "screen_masking": "real",
  "graphics_masking": "mask",
  "graphics_noise": "mask",
  "webrtc_masking": "mask",
  "geolocation_masking": "mask",
  "timezone_masking": "mask",
  "locale_masking": "mask"
}

Flag Details

WebRTC Masking

Prevents real IP address leaks through WebRTC STUN/TURN requests. Critical when using proxies.

Canvas/Graphics Noise

Injects subtle noise into HTML5 Canvas and WebGL rendering. Each profile generates a unique, consistent fingerprint.

Geolocation Masking

Spoofs the Geolocation API coordinates to match the proxy server location. Set to mask when using proxies from specific regions.

Timezone Masking

Sets the browser timezone to match the profile's configured region. Ensures consistency between IP geolocation and browser timezone.

Consistency Matters

For best anti-detection results, ensure that timezone, locale, geolocation, and proxy all point to the same geographic region.