Crawler Fingerprint Analyzer

Label: unlabeled | Report ID: afecd9a4-3b7d-4651-a7b0-c54898f34175 | 2026-07-13T07:18:34.702Z
Tip: visit with ?label=chrome-real, ?label=brave-real, ?label=safari-real, ?label=our-stealth.
All saved reports | Diff two reports

✗

User-Agent string HTTP Headers

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

Matched automation pattern: /bot/i

✗

Accept-Language presence HTTP Headers

(missing)

Missing — headless browsers often omit Accept-Language

✗

Accept-Language quality weights HTTP Headers

(missing)

Missing Accept-Language

✓

Pragma header (automation artifact) HTTP Headers

(absent — correct)

No Pragma header — matches real browser behavior

Sec-CH-UA Client Hints HTTP Headers

(missing)

Missing (may be HTTP/1.1 or non-Chromium)

✓

Header order (Chrome reference) HTTP Headers

host, user-agent, accept, accept-encoding, x-forwarded-for, x-forwarded-host, x-forwarded-port, x-forwarded-proto, x-forwarded-server, x-real-ip

Header order matches known Chrome pattern

Accept header HTTP Headers

*/*

Does not include text/html

✓

Accept-Encoding HTTP Headers

gzip, br, zstd, deflate

Supports gzip + br — matches modern Chrome

Sec-Fetch-* headers HTTP Headers

site=, mode=, user=, dest=

Some Sec-Fetch headers missing — may indicate non-browser request

✓

Platform ↔ UA consistency HTTP Headers

Platform: (none), UA OS: unknown

Sec-CH-UA-Platform matches User-Agent OS

Connection header HTTP Headers

(missing)

Informational — HTTP/2 does not use Connection header

Client IP address Network

10.42.0.1

Check against datacenter IP ranges (AWS, GCP, Azure, Hetzner, OVH, DigitalOcean) — datacenter IPs are flagged by anti-bot systems

TLS fingerprint (JA3/JA4) TLS / HTTP/2

(not available — server running in HTTP mode or behind TLS-terminating proxy)

Start with HTTPS mode (node index.js --https) to capture TLS fingerprints, or deploy fingerproxy sidecar in K8s.

HTTP/2 fingerprint TLS / HTTP/2

Request protocol: HTTP/1.1

HTTP/2 SETTINGS/WINDOW_UPDATE/priority frames create a fingerprint. Use browserleaks.com/http2 to verify.

All request headers (raw order) Raw Data

Host: fingerprint.venus.miguvino.com User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com) Accept: */* Accept-Encoding: gzip, br, zstd, deflate X-Forwarded-For: 10.42.0.1 X-Forwarded-Host: fingerprint.venus.miguvino.com X-Forwarded-Port: 443 X-Forwarded-Proto: https X-Forwarded-Server: traefik-c98fdf6fb-kksw5 X-Real-Ip: 10.42.0.1

Complete headers as received by the server, in original order

Crawler Fingerprint Analyzer

Server-Side Analysis (HTTP Request)

Client-Side Analysis (JavaScript Fingerprint)

External Test Sites