Multilogin

Multilogin is the most fingerprint-fidelity-focused option among antidetect browsers. Its proxy support covers all helodata products.

Per-profile setup

1. New profile → Proxy section.
2. Connection type: HTTP or SOCKS5.
3. Fill in:

Residential / Mobile (gateway)

Field	Value
Host	gate.helodata.io
Port	7777
Login	helo_s1a2b3c4d5e-type-res-region-us-session-prof01-sesstime-30
Password	sub-user password

ISP

Field	Value
Host	198.51.100.42
Port	8000
Login	helo_s1a2b3c4d5e
Password	sub-user password

1. Click Check proxy — Multilogin probes and shows the exit IP, country, and timezone.
2. Multilogin will offer to auto-match fingerprint to the proxy's country. Accept it.

[screenshot: Multilogin profile creation with helodata proxy]

Bulk via API

Multilogin's Local API can create profiles programmatically — useful for spinning up N profiles, each bound to one ISP IP:

curl -X POST http://127.0.0.1:35000/api/v1/profile \
  -H "Content-Type: application/json" \
  -d '{
    "name": "isp-us-042",
    "os_type": "windows",
    "proxy": {
      "type": "http",
      "host": "198.51.100.42",
      "port": 8000,
      "username": "helo_s1a2b3c4d5e",
      "password": "PASSWORD"
    }
  }'

Loop over your ISP list to provision profiles in seconds.

Fingerprint match

Multilogin's strength is matching the browser fingerprint to the proxy's locale. Enable Match fingerprint to proxy country:

• Language headers align with the country
• Timezone derives from the proxy IP
• WebGL / Canvas fingerprints are randomized within country norms

Verify

Hit https://browserleaks.com/ip + https://browserleaks.com/javascript and check IP, timezone, navigator.language all align.

Common pitfalls

• MultiloginProxyError: AUTHENTICATION_FAILED — gateway products require the full username (helo_...-type-res-region-us), not just helo_s1a2b3c4d5e.
• Profile launched before proxy check — Multilogin will sometimes hold a stale proxy in memory; restart the profile after editing.