ua-tracer by Paul Kinlan

ua-tracer

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

← all traces

Trace nCA5gSKv

First seen: 2026-06-28 09:56:24.611 UTC
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

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
2026-06-28 09:56:24.611 UTC +0 ms homepage GET Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
request headers (10) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
  "accept-encoding": "gzip, br, deflate",
  "accept-language": "en-US,en;q=0.5",
  "host": "uatracer.com",
  "referer": "http://uatracer.com/",
  "traceparent": "00-dc56a53583d4b621ae78375bad9e3233-9723314d0aaa1685-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-06-28 09:56:25.094 UTC +483 ms web app manifest GET Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
request headers (10) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
  "accept-encoding": "gzip, br, deflate",
  "accept-language": "en-US,en;q=0.5",
  "host": "uatracer.com",
  "referer": "http://uatracer.com/r/nCA5gSKv/manifest.json",
  "traceparent": "00-20f444cb1ab1b8f293dfe93f59a1681e-8f9457fe30bfd99e-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-06-28 09:56:25.509 UTC +898 ms JS GET Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
request headers (10) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
  "accept-encoding": "gzip, br, deflate",
  "accept-language": "en-US,en;q=0.5",
  "host": "uatracer.com",
  "referer": "http://uatracer.com/r/nCA5gSKv/main.js",
  "traceparent": "00-58b083b9235db7fd898455328e2e27a8-0d0cac4219d9c8ad-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-06-28 09:56:25.937 UTC +1326 ms ES module GET Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
request headers (10) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
  "accept-encoding": "gzip, br, deflate",
  "accept-language": "en-US,en;q=0.5",
  "host": "uatracer.com",
  "referer": "http://uatracer.com/r/nCA5gSKv/module.js",
  "traceparent": "00-56025e5d4df156e06c17aa7988c5fadd-b7639b0b3ce3e1a3-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-06-28 11:35:48.480 UTC +5963869 ms web app manifest GET Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1
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",
  "accept-language": "zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7",
  "cache-control": "no-cache",
  "connection": "keep-alive, close",
  "host": "uatracer.com",
  "pragma": "no-cache",
  "referer": "http://uatracer.com/r/nCA5gSKv/manifest.json",
  "traceparent": "00-dd69976e4cae15cf762fabe1496c8e0d-7af82e8b80410662-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}