ua-tracer by Paul Kinlan

trace kBC3hQYT

ua-tracer

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

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Trace kBC3hQYT

First seen: 2026-07-05 15:09:53.292 UTC
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3)
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
2026-07-05 15:09:53.292 UTC +0 ms homepage GET Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3)
request headers (13) 
{
  "accept": "*/*",
  "accept-encoding": "deflate, gzip",
  "host": "uatracer.com",
  "traceparent": "00-a2411ebc45972031d06ec5cd6efa8b62-c115efb44060c1ac-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-datadog-parent-id": "2248554493429237899",
  "x-datadog-sampling-priority": "1",
  "x-datadog-tags": "_dd.p.tid=6a49f7ef00000000,_dd.p.dm=-0",
  "x-datadog-trace-id": "2771178628998804869",
  "x-deno-userspace-traceparent": "00-a2411ebc45972031d06ec5cd6efa8b62-8d66a11d2e88f0d9-01",
  "x-deno-userspace-tracestate": ""
}