ua-tracer by Paul Kinlan

trace yDKF4uwr

ua-tracer

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

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Trace yDKF4uwr

First seen: 2026-08-19 09:33:29.187 UTC
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/557.39 (KHTML, like Gecko) Chrome/73.0.2290 Safari/537.36
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
2026-08-19 09:33:29.187 UTC +0 ms homepage GET Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/557.39 (KHTML, like Gecko) Chrome/73.0.2290 Safari/537.36
request headers (7) 
{
  "accept-encoding": "gzip",
  "connection": "close",
  "host": "uatracer.com",
  "traceparent": "00-0b03bfce42b1cf0b697dbcdbd6526d7f-0e7b821d4da29cfb-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/557.39 (KHTML, like Gecko) Chrome/73.0.2290 Safari/537.36",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
2026-08-19 09:33:39.144 UTC +9957 ms favicon GET Go-http-client/1.1
request headers (9) 
{
  "accept-encoding": "gzip",
  "connection": "close",
  "host": "uatracer.com",
  "traceparent": "00-e4f06d23f39028d8b61ea1f402f28b83-291589423c611c86-01",
  "tracestate": "",
  "user-agent": "Go-http-client/1.1",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-e4f06d23f39028d8b61ea1f402f28b83-4671a3014071bf4d-01",
  "x-deno-userspace-tracestate": ""
}
2026-08-19 09:33:40.236 UTC +11049 ms JS GET Go-http-client/1.1
request headers (9) 
{
  "accept-encoding": "gzip",
  "connection": "close",
  "host": "uatracer.com",
  "traceparent": "00-c691a4e075b335a39b68c985656626f5-1c0a35915fb81c2a-01",
  "tracestate": "",
  "user-agent": "Go-http-client/1.1",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-c691a4e075b335a39b68c985656626f5-c9694887f646ae57-01",
  "x-deno-userspace-tracestate": ""
}
2026-08-19 09:33:41.292 UTC +12105 ms ES module GET Go-http-client/1.1
request headers (9) 
{
  "accept-encoding": "gzip",
  "connection": "close",
  "host": "uatracer.com",
  "traceparent": "00-9f3e9ba2c8e9701eb6e836f7d3a44616-3f29ae3fef2ae247-01",
  "tracestate": "",
  "user-agent": "Go-http-client/1.1",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-9f3e9ba2c8e9701eb6e836f7d3a44616-048287e6d422eb9a-01",
  "x-deno-userspace-tracestate": ""
}