ua-tracer by Paul Kinlan

trace Y97df84l

ua-tracer

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

← all traces

Trace Y97df84l

First seen: 2026-10-08 13:55:49.865 UTC
User-Agent: Mozilla/5.0 (compatible; SummalyBot/5.2.5-io.4)
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
2026-10-08 13:55:49.865 UTC +0 ms homepage GET Mozilla/5.0 (compatible; SummalyBot/5.2.5-io.4)
request headers (11) 
{
  "accept": "text/html,application/xhtml+xml",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "ja-JP",
  "connection": "keep-alive",
  "host": "uatracer.com",
  "traceparent": "00-ef687de49bd1018057eb992d6a4bded7-b6bd52d730312659-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; SummalyBot/5.2.5-io.4)",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-ef687de49bd1018057eb992d6a4bded7-5584c444d8036a2d-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-08 13:55:50.575 UTC +710 ms favicon HEAD got (https://github.com/sindresorhus/got)
request headers (10) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br, zstd",
  "connection": "keep-alive",
  "host": "uatracer.com",
  "traceparent": "00-7887c2400d697d0afab67c96f7666abc-d8ba5d1eace613cf-01",
  "tracestate": "",
  "user-agent": "got (https://github.com/sindresorhus/got)",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-7887c2400d697d0afab67c96f7666abc-3d5b3b131e2906ff-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-08 13:55:51.219 UTC +1354 ms favicon GET MisskeyMediaProxy/0.0.25
request headers (8) 
{
  "accept-encoding": "gzip, deflate, br, zstd",
  "host": "uatracer.com",
  "traceparent": "00-f1a8a89093f90eef98747784c93a34a2-e91168ea65051487-01",
  "tracestate": "",
  "user-agent": "MisskeyMediaProxy/0.0.25",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-f1a8a89093f90eef98747784c93a34a2-9eef8b4258132e14-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-08 13:55:51.220 UTC +1355 ms Open Graph image GET MisskeyMediaProxy/0.0.25
request headers (8) 
{
  "accept-encoding": "gzip, deflate, br, zstd",
  "host": "uatracer.com",
  "traceparent": "00-88297bd371d5a3c51c3829c48ae6cf94-fe859c8de35d25fe-01",
  "tracestate": "",
  "user-agent": "MisskeyMediaProxy/0.0.25",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-88297bd371d5a3c51c3829c48ae6cf94-41f742839cc7fc0c-01",
  "x-deno-userspace-tracestate": ""
}