ua-tracer by Paul Kinlan

trace MGbDqKmX

ua-tracer

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

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Trace MGbDqKmX

First seen: 2026-09-22 20:26:41.582 UTC
User-Agent: Mozilla/5.0 Firefox/143.0
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
2026-09-22 20:26:41.582 UTC +0 ms homepage GET Mozilla/5.0 Firefox/143.0
request headers (8) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate",
  "accept-language": "en-US,en;q=0.9",
  "host": "uatracer.com",
  "traceparent": "00-d1d4ef52c0119f9b840910b3f70b2904-9590d6766b4100b9-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 Firefox/143.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
2026-09-22 20:26:42.422 UTC +840 ms CSS GET Mozilla/5.0 Firefox/143.0
request headers (9) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate",
  "accept-language": "en-US,en;q=0.9",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-f02c421e2fb777d6c631406d9de90f64-e99dea53f81b551d-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 Firefox/143.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
2026-09-22 20:26:42.614 UTC +1032 ms CSS @import (nested stylesheet) GET Mozilla/5.0 Firefox/143.0
request headers (9) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate",
  "accept-language": "en-US,en;q=0.9",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-281d6d8ac5d091e2a24acf5e1306c07d-4babecfebe93af34-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 Firefox/143.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
2026-09-22 20:26:44.530 UTC +2948 ms CSS @font-face GET Mozilla/5.0 Firefox/143.0
request headers (11) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate",
  "accept-language": "en-US,en;q=0.9",
  "host": "uatracer.com",
  "referer": "https://uatracer.com",
  "traceparent": "00-ee89700a7108c0f6deeef5f13e1f518e-2b40e3a582f85a04-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 Firefox/143.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-ee89700a7108c0f6deeef5f13e1f518e-da8300a39391ac35-01",
  "x-deno-userspace-tracestate": ""
}