ua-tracer by Paul Kinlan

trace 9j01miI8

ua-tracer

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

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Trace 9j01miI8

First seen: 2026-08-28 21:18:19.309 UTC
User-Agent: Scrapy/2.17.0 (+https://scrapy.org)
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
2026-08-28 21:18:19.309 UTC +0 ms homepage GET Scrapy/2.17.0 (+https://scrapy.org)
request headers (8) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
  "accept-encoding": "gzip, deflate",
  "accept-language": "en",
  "host": "uatracer.com",
  "traceparent": "00-dd3c8a33ae3c7a95bd4a8c0be793729e-23185cda08fd9d99-01",
  "tracestate": "",
  "user-agent": "Scrapy/2.17.0 (+https://scrapy.org)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-08-28 21:22:36.047 UTC +256738 ms favicon GET Scrapy/2.17.0 (+https://scrapy.org)
request headers (8) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
  "accept-encoding": "gzip, deflate",
  "accept-language": "en",
  "host": "uatracer.com",
  "traceparent": "00-8ac3e61e48866dabfa5ceec2c91596c7-ca152f2f0caf5208-01",
  "tracestate": "",
  "user-agent": "Scrapy/2.17.0 (+https://scrapy.org)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-08-28 21:22:36.051 UTC +256742 ms apple-touch-icon GET Scrapy/2.17.0 (+https://scrapy.org)
request headers (8) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
  "accept-encoding": "gzip, deflate",
  "accept-language": "en",
  "host": "uatracer.com",
  "traceparent": "00-5480e70356f5928e9f37df76ab3f5e08-188aa6e9f989b194-01",
  "tracestate": "",
  "user-agent": "Scrapy/2.17.0 (+https://scrapy.org)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}