ua-tracer by Paul Kinlan

trace 0zxgTba0

ua-tracer

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

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Trace 0zxgTba0

First seen: 2026-11-01 17:19:06.693 UTC
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_1) AppleWebKit/601.2.4 (KHTML, like Gecko) Version/9.0.1 Safari/601.2.4 facebookexternalhit/1.1 Facebot Twitterbot/1.0
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
2026-11-01 17:19:06.693 UTC +0 ms homepage GET Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_1) AppleWebKit/601.2.4 (KHTML, like Gecko) Version/9.0.1 Safari/601.2.4 facebookexternalhit/1.1 Facebot Twitterbot/1.0
request headers (14) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "host": "uatracer.com",
  "priority": "u=0, i",
  "sec-fetch-dest": "document",
  "sec-fetch-mode": "navigate",
  "sec-fetch-site": "none",
  "traceparent": "00-80567a08eae7f80508ea66e741f22cd0-28c8d5e2c9da29a9-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_1) AppleWebKit/601.2.4 (KHTML, like Gecko) Version/9.0.1 Safari/601.2.4 facebookexternalhit/1.1 Facebot Twitterbot/1.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-80567a08eae7f80508ea66e741f22cd0-1c15b62ce4f82294-01",
  "x-deno-userspace-tracestate": ""
}
2026-11-01 17:19:08.310 UTC +1617 ms Open Graph image GET com.apple.WebKit.Networking/22625.2.8.11.9 Network/6681.41.1 macOS/27.2
request headers (12) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "priority": "u=7, i",
  "traceparent": "00-a70a10cc1ba3dcc58be97f4c5c4f4011-cf0ba6f5c315e67b-01",
  "tracestate": "",
  "user-agent": "com.apple.WebKit.Networking/22625.2.8.11.9 Network/6681.41.1 macOS/27.2",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-a70a10cc1ba3dcc58be97f4c5c4f4011-dcea77a45b0f0bf3-01",
  "x-deno-userspace-tracestate": ""
}
2026-11-01 17:19:08.310 UTC +1617 ms apple-touch-icon GET com.apple.WebKit.Networking/22625.2.8.11.9 Network/6681.41.1 macOS/27.2
request headers (12) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "priority": "u=7, i",
  "traceparent": "00-f048a5c543d04619da77e7b5d0825e67-bd5c06f03b1490dc-01",
  "tracestate": "",
  "user-agent": "com.apple.WebKit.Networking/22625.2.8.11.9 Network/6681.41.1 macOS/27.2",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-f048a5c543d04619da77e7b5d0825e67-c02e91a7e360817f-01",
  "x-deno-userspace-tracestate": ""
}
2026-11-01 17:19:08.313 UTC +1620 ms favicon GET com.apple.WebKit.Networking/22625.2.8.11.9 Network/6681.41.1 macOS/27.2
request headers (12) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "priority": "u=7, i",
  "traceparent": "00-6941578f863a9540819ea34b86b004a5-8f35694dfa638196-01",
  "tracestate": "",
  "user-agent": "com.apple.WebKit.Networking/22625.2.8.11.9 Network/6681.41.1 macOS/27.2",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-6941578f863a9540819ea34b86b004a5-6c8e2b12f6ec77d7-01",
  "x-deno-userspace-tracestate": ""
}