ua-tracer by Paul Kinlan

ua-tracer

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

← all traces

Trace MRDh03Tw

First seen: 2026-07-03 05:08:27.952 UTC
User-Agent: node-fetch
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 05:08:27.952 UTC +0 ms homepage GET node-fetch
request headers (10) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "connection": "keep-alive",
  "host": "uatracer.com",
  "traceparent": "00-7f3f2d8aa8cd5d777567fed45bbaa1ac-8c622974bd063c44-01",
  "tracestate": "",
  "user-agent": "node-fetch",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-7f3f2d8aa8cd5d777567fed45bbaa1ac-5142d9d2f63492a5-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-03 05:08:29.160 UTC +1208 ms apple-touch-icon GET got (https://github.com/sindresorhus/got)
request headers (9) 
{
  "connection": "keep-alive",
  "host": "uatracer.com",
  "range": "bytes=0-0",
  "traceparent": "00-bfc7c0a90a671ee91d6fe8e3f5602e3f-5d6cb2f9d3f0e0c5-01",
  "tracestate": "",
  "user-agent": "got (https://github.com/sindresorhus/got)",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-bfc7c0a90a671ee91d6fe8e3f5602e3f-c06738486f4ae562-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-03 05:08:30.012 UTC +2060 ms Open Graph image GET node-fetch
request headers (10) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "connection": "keep-alive",
  "host": "uatracer.com",
  "traceparent": "00-48b595b09642f8b7de62044b80c85df5-d0f3766eb008d7b8-01",
  "tracestate": "",
  "user-agent": "node-fetch",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-48b595b09642f8b7de62044b80c85df5-6b95a66bdceae28b-01",
  "x-deno-userspace-tracestate": ""
}