ua-tracer by Paul Kinlan

trace EQ2c5jcq

ua-tracer

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

← all traces

Trace EQ2c5jcq

First seen: 2026-08-16 10:49:51.603 UTC
User-Agent: Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.7871.186 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
Bot verification: ✓ verified Googlebot IP checked against published bot CIDR ranges; 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
2026-08-16 10:49:51.603 UTC +0 ms homepage GET Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.7871.186 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
request headers (10) 
{
  "accept": "text/html,application/xhtml+xml,application/signed-exchange;v=b3,application/xml;q=0.9,*/*;q=0.8",
  "accept-encoding": "gzip, deflate, br",
  "amp-cache-transform": "google;v=\"1..8\"",
  "connection": "keep-alive",
  "from": "googlebot(at)googlebot.com",
  "host": "uatracer.com",
  "traceparent": "00-3d2f664f371bfa8aeb20cf1a1d226396-90cd47003f4261cb-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.7871.186 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-08-16 10:50:09.346 UTC +17743 ms iframe document GET Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.7871.186 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
request headers (13) 
{
  "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": "ua-tracer-trace=EQ2c5jcq",
  "from": "googlebot(at)googlebot.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/?ua=Mastodon%2F4.6.0%20",
  "traceparent": "00-ebeee41d20a9d3e97b83998d9302ad32-672a1091a36ff9ff-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.7871.186 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-08-16 10:50:09.814 UTC +18211 ms CSS GET Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.7871.186 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
request headers (14) 
{
  "accept": "text/css,*/*;q=0.1",
  "accept-encoding": "gzip, deflate, br",
  "accept-language": "en-US",
  "connection": "keep-alive",
  "cookie": "ua-tracer-trace=EQ2c5jcq",
  "from": "googlebot(at)googlebot.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/?ua=Mastodon%2F4.6.0%20",
  "traceparent": "00-fb89f9805592140d3f30835caf34943c-f688992d71147e32-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.7871.186 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-fb89f9805592140d3f30835caf34943c-dc7cbd228a1bfc39-01",
  "x-deno-userspace-tracestate": ""
}
2026-08-16 10:50:10.086 UTC +18483 ms ES module GET Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.7871.186 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
request headers (13) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "accept-language": "en-US",
  "connection": "keep-alive",
  "cookie": "ua-tracer-trace=EQ2c5jcq",
  "from": "googlebot(at)googlebot.com",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/?ua=Mastodon%2F4.6.0%20",
  "traceparent": "00-66c6784161cbdd098e4aadcbeb9373b1-17fcddec088fba96-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.7871.186 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-08-16 10:50:10.574 UTC +18971 ms JS GET Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.7871.186 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
request headers (14) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "accept-language": "en-US",
  "connection": "keep-alive",
  "cookie": "ua-tracer-trace=EQ2c5jcq",
  "from": "googlebot(at)googlebot.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/?ua=Mastodon%2F4.6.0%20",
  "traceparent": "00-be0c42d625fadb0dddf1e807edf378c4-b5ee5af4a649a678-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.7871.186 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-be0c42d625fadb0dddf1e807edf378c4-10ddf80228302d90-01",
  "x-deno-userspace-tracestate": ""
}