ua-tracer by Paul Kinlan

trace QNopUO4d

ua-tracer

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

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Trace QNopUO4d

First seen: 2026-06-22 12:06:30.518 UTC
User-Agent: SummalyBot/5.2.2
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
2026-06-22 12:06:30.518 UTC +0 ms homepage GET SummalyBot/5.2.2
request headers (9) 
{
  "accept": "text/html,application/xhtml+xml",
  "accept-encoding": "gzip, deflate, br",
  "accept-language": "en-US",
  "connection": "keep-alive",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-d65f023f1d77a572c8f7fd85f6a57989-aa7a8a5f7d786a95-01",
  "tracestate": "",
  "user-agent": "SummalyBot/5.2.2",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-06-22 12:06:30.974 UTC +456 ms favicon HEAD got (https://github.com/sindresorhus/got)
request headers (8) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "connection": "keep-alive",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-857e5459f992640abef4a3c3cd26d7c7-ad852a00b91a61e1-01",
  "tracestate": "",
  "user-agent": "got (https://github.com/sindresorhus/got)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-06-22 12:06:31.986 UTC +1468 ms Open Graph image GET Misskey/2025.4.7 (https://blahaj.zone)
request headers (7) 
{
  "accept-encoding": "gzip, deflate, br",
  "connection": "keep-alive",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-635555295f9629b354b1c552a744555d-30d8bfd184358781-01",
  "tracestate": "",
  "user-agent": "Misskey/2025.4.7 (https://blahaj.zone)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-06-22 12:06:32.051 UTC +1533 ms favicon GET Misskey/2025.4.7 (https://blahaj.zone)
request headers (7) 
{
  "accept-encoding": "gzip, deflate, br",
  "connection": "keep-alive",
  "host": "ua-tracer.paulkinlan-ea.deno.net",
  "traceparent": "00-efc6e37078d9944c041ae44b69a5f961-2f47c08a727288af-01",
  "tracestate": "",
  "user-agent": "Misskey/2025.4.7 (https://blahaj.zone)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}