ua-tracer by Paul Kinlan

ua-tracer

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

← all traces

Trace LMyH54Ez

First seen: 2026-06-25 05:09:34.014 UTC
User-Agent: Mozilla/5.0 (compatible; SaaSBrowserBot/1.0; +https://saasbrowser.com/bot)

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
2026-06-25 05:09:34.014 UTC +0 ms homepage GET Mozilla/5.0 (compatible; SaaSBrowserBot/1.0; +https://saasbrowser.com/bot)
request headers (12) 
{
  "accept": "*/*",
  "accept-encoding": "gzip;q=1.0,deflate;q=0.6,identity;q=0.3",
  "baggage": "sentry-trace_id=4ab3a62d85e2497fa7f02c66ab316009,sentry-environment=production,sentry-release=d499b3ee960b832c803496c3a52f043574f657de,sentry-public_key=ac36109204837ae766818e5774a2e8e2",
  "connection": "close",
  "host": "uatracer.com",
  "sentry-trace": "4ab3a62d85e2497fa7f02c66ab316009-6d096d5f3abc41fa",
  "traceparent": "00-a9ae31774ce6bbd0296d5d04f43a390c-83c0b05296d3ecf4-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; SaaSBrowserBot/1.0; +https://saasbrowser.com/bot)",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-a9ae31774ce6bbd0296d5d04f43a390c-2f019866f490ce95-01",
  "x-deno-userspace-tracestate": ""
}