ua-tracer by Paul Kinlan

trace 2xc3yF1F

ua-tracer

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

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Trace 2xc3yF1F

First seen: 2026-10-26 16:09:48.988 UTC
User-Agent: Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
Bot verification: ✓ verified Googlebot IP in Googlebot published range.

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
2026-10-26 16:09:48.988 UTC +0 ms homepage GET Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
request headers (9) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "connection": "keep-alive",
  "from": "googlebot(at)googlebot.com",
  "host": "uatracer.com",
  "traceparent": "00-6c81b0e0c14b61327efb066783ad706c-0838d9ece63f0d47-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
2026-10-26 16:09:52.767 UTC +3779 ms ES module GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Chrome/153.0.8010.36 Safari/537.36
request headers (15) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "accept-language": "en-US",
  "connection": "keep-alive",
  "cookie": "[redacted]",
  "from": "googlebot(at)googlebot.com",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-4fa6701b93604657f68f958608ff008c-607d98b8118a1561-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Chrome/153.0.8010.36 Safari/537.36",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-4fa6701b93604657f68f958608ff008c-5fcd059eda91ceb8-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-26 16:09:53.456 UTC +4468 ms CSS GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Chrome/153.0.8010.36 Safari/537.36
request headers (14) 
{
  "accept": "text/css,*/*;q=0.1",
  "accept-encoding": "gzip, deflate, br",
  "accept-language": "en-US",
  "connection": "keep-alive",
  "cookie": "[redacted]",
  "from": "googlebot(at)googlebot.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-e33a937d643682381cfdfeb0d45d5f5f-2af4e6426a08f154-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Chrome/153.0.8010.36 Safari/537.36",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-e33a937d643682381cfdfeb0d45d5f5f-ffc0627c8f0e5f70-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-26 16:09:53.728 UTC +4740 ms JS GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Chrome/153.0.8010.36 Safari/537.36
request headers (14) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "accept-language": "en-US",
  "connection": "keep-alive",
  "cookie": "[redacted]",
  "from": "googlebot(at)googlebot.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-e6a6ca6dadd9a983aadc788fab8d752f-c1103e49de50b1d0-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Chrome/153.0.8010.36 Safari/537.36",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-e6a6ca6dadd9a983aadc788fab8d752f-b62c9ba17e643549-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-26 16:09:54.404 UTC +5416 ms iframe document GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Chrome/153.0.8010.36 Safari/537.36
request headers (15) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7",
  "accept-encoding": "gzip, deflate, br",
  "accept-language": "en-US",
  "connection": "keep-alive",
  "cookie": "[redacted]",
  "from": "googlebot(at)googlebot.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-59a8a60607c5f61a71af49f70a9af7c4-79dcd41470239227-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Chrome/153.0.8010.36 Safari/537.36",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-59a8a60607c5f61a71af49f70a9af7c4-bd6041cb895f2bbd-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-26 16:09:54.676 UTC +5688 ms prefetch GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Chrome/153.0.8010.36 Safari/537.36
request headers (15) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7",
  "accept-encoding": "gzip, deflate, br",
  "accept-language": "en-US",
  "connection": "keep-alive",
  "cookie": "[redacted]",
  "from": "googlebot(at)googlebot.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "sec-purpose": "prefetch",
  "traceparent": "00-3c9cf07953f51d4b25aa2519ac5c2d0a-c837ac2925fe267b-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Chrome/153.0.8010.36 Safari/537.36",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-3c9cf07953f51d4b25aa2519ac5c2d0a-09c5e58fa2e7b369-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-26 16:09:57.060 UTC +8072 ms CSS @import (nested stylesheet) GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Chrome/153.0.8010.36 Safari/537.36
request headers (14) 
{
  "accept": "text/css,*/*;q=0.1",
  "accept-encoding": "gzip, deflate, br",
  "accept-language": "en-US",
  "connection": "keep-alive",
  "cookie": "[redacted]",
  "from": "googlebot(at)googlebot.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/r/2xc3yF1F/RKhu2J9u/style.css",
  "traceparent": "00-b537eb4929cdd88d733c09d3df39a950-c95ca0ffba5c233d-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Chrome/153.0.8010.36 Safari/537.36",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-b537eb4929cdd88d733c09d3df39a950-fc82a1f6cd096e29-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-26 16:09:59.588 UTC +10600 ms favicon GET Googlebot-Image/1.0
request headers (11) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "connection": "keep-alive",
  "from": "googlebot(at)googlebot.com",
  "host": "uatracer.com",
  "traceparent": "00-85f32079fed76237861ff9758c6a571a-53386343a29848bc-01",
  "tracestate": "",
  "user-agent": "Googlebot-Image/1.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-85f32079fed76237861ff9758c6a571a-97e1459f94af5291-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-26 16:10:00.551 UTC +11563 ms apple-touch-icon GET Googlebot-Image/1.0
request headers (11) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "connection": "keep-alive",
  "from": "googlebot(at)googlebot.com",
  "host": "uatracer.com",
  "traceparent": "00-7fe7de99ddafb621c45e5d4fc3d4a29c-b3fb6647b3fe3e6c-01",
  "tracestate": "",
  "user-agent": "Googlebot-Image/1.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-7fe7de99ddafb621c45e5d4fc3d4a29c-99f0dfd95d031875-01",
  "x-deno-userspace-tracestate": ""
}