ua-tracer by Paul Kinlan

ua-tracer

what does a user agent actually fetch, follow & run?

← all traces

Trace 6kKBmrIG

First seen: 2026-07-03 07:16:29.961 UTC
User-Agent: Harmonic-HN-Android/3.0.1/release
Bot verification: Not a known bot (no IP-range check applies).

What this user agent did

Directly-referenced assets:

✗ fetched CSS ✗ fetched JS ✗ fetched image ✗ fetched font (HTML)

Document-level link hints:

✗ fetched favicon ✗ fetched apple-touch-icon ✗ fetched web manifest ✗ fetched preload ✗ fetched prefetch

Second-level follows (proves it parsed the linking file):

✗ followed CSS background-image ✗ followed CSS @font-face ✗ followed manifest icon ✗ followed CSS @import

Frames (does it descend into iframes?):

✗ fetched iframe document ✗ descended into iframe (loaded inner image)

Reporting (a report-only CSP is violated by inline styles; reports can arrive via HTTP headers with no JS, or via in-page beacons):

✗ sent a CSP/Reporting report (any path) ✗ delivered via report-uri/Report-To header (no JS) ✗ delivered via in-page beacon (securitypolicyviolation / ReportingObserver)

Social embed (Open Graph / Twitter card images):

✓ fetched og:image ✗ fetched twitter:image

JavaScript execution:

✗ EXECUTED classic JS ✗ EXECUTED ES module ✗ posted client timing

Server-side request waterfall

Every request the server received for this trace, in receive order. +ms is the delta from the homepage request.

ReceivedΔKindMethodUser-Agent
2026-07-03 07:16:29.961 UTC +0 ms homepage GET Harmonic-HN-Android/3.0.1/release
request headers (9) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-45af17e1986d6b875a23542590b1deb4-43b9aa96d43d141a-01",
  "tracestate": "",
  "user-agent": "Harmonic-HN-Android/3.0.1/release",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-45af17e1986d6b875a23542590b1deb4-2ffaf27d9a105242-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-03 07:16:33.273 UTC +3312 ms Open Graph image GET Harmonic-HN-Android/3.0.1/release
request headers (8) 
{
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-62b69e6cbbf18f2fd16821550d10b305-97f26405e61ed6f9-01",
  "tracestate": "",
  "user-agent": "Harmonic-HN-Android/3.0.1/release",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-62b69e6cbbf18f2fd16821550d10b305-947995d4f6c9a4f7-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-03 07:16:54.202 UTC +24241 ms Open Graph image GET Harmonic-HN-Android/3.0.1/release
request headers (6) 
{
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-b6235e26ce29b8c518effdf7dae5a16d-d5cc0cd18b9d1316-01",
  "tracestate": "",
  "user-agent": "Harmonic-HN-Android/3.0.1/release",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}