ua-tracer by Paul Kinlan

ua-tracer

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

← all traces

Trace hs9NTKs5

First seen: 2026-06-23 01:27:10.295 UTC
User-Agent: okhttp/5.3.0

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
2026-06-23 01:27:10.295 UTC +0 ms homepage GET okhttp/5.3.0
request headers (8) 
{
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-b3cd55db238b4f08244910aec4a5f935-564027115c82dd46-01",
  "tracestate": "",
  "user-agent": "okhttp/5.3.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-b3cd55db238b4f08244910aec4a5f935-61dac91e7a5776ca-01",
  "x-deno-userspace-tracestate": ""
}
2026-06-23 01:27:10.777 UTC +482 ms favicon GET okhttp/5.3.0
request headers (8) 
{
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-840acfe337af08fc3651bd7038cb9e65-390ff662f8b22b5e-01",
  "tracestate": "",
  "user-agent": "okhttp/5.3.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-840acfe337af08fc3651bd7038cb9e65-3e435127eab5d14d-01",
  "x-deno-userspace-tracestate": ""
}
2026-06-23 01:27:11.086 UTC +791 ms apple-touch-icon GET okhttp/5.3.0
request headers (8) 
{
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-9627f151b7f6c6b0eba24b06cf825d36-7645c32ee145028b-01",
  "tracestate": "",
  "user-agent": "okhttp/5.3.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-9627f151b7f6c6b0eba24b06cf825d36-050682cd38a507f9-01",
  "x-deno-userspace-tracestate": ""
}