ua-tracer by Paul Kinlan

trace 7Gt7c818

ua-tracer

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

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Trace 7Gt7c818

First seen: 2026-10-29 16:36:13.369 UTC
User-Agent: Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)
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
2026-10-29 16:36:13.369 UTC +0 ms homepage GET Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)
request headers (12) 
{
  "accept": "*/*",
  "accept-encoding": "deflate, gzip, br, zstd",
  "host": "uatracer.com",
  "signature": "sig=:9ZlgIHgSAk5XN/Kg+iObSdxxG4M5H33h9ofWTGovzbOHvw8P5BQxTs81gMMs5DTyivjaaXpwpYoDUC9yJJyeDQ==:",
  "signature-agent": "\"https://ahrefs.com\"",
  "signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793291773;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793291833;nonce=\"9o8vMZuTMLpKhRKYxqCg9_01shqvGdzgvbrv3s0aoxJQkD9GqUeIPtCV8cHqEXtL-eG6LWXddPuyFTfDaKhvHQ\";tag=\"web-bot-auth\"",
  "traceparent": "00-da66a7227b083c4be0f9e96d27d3bc7e-3742d46ead786fe4-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-da66a7227b083c4be0f9e96d27d3bc7e-fc2528753a60e913-01",
  "x-deno-userspace-tracestate": ""
}