ua-tracer by Paul Kinlan

trace NacoCqDl

ua-tracer

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

← all traces

Trace NacoCqDl

First seen: 2026-07-13 13:53:28.623 UTC
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
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
2026-07-13 13:53:28.623 UTC +0 ms homepage GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (16) 
{
  "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",
  "sec-fetch-user": "?1",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-04d8118d16bf87edbe9029ee72a6de6e-b60fb95dc28b9ae5-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-07-13 13:53:29.966 UTC +1343 ms CSS GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (16) 
{
  "accept": "text/css,*/*;q=0.1",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "priority": "u=2",
  "referer": "https://uatracer.com/?utm_source=stefanjudis&utm_medium=email&utm_campaign=u1f9e2-web-weekly-196-ecmascript-2026-and-wiggly",
  "sec-fetch-dest": "style",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-bf4365c73f702e098e2742fb4ed4ff70-38823d0e0cb75621-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-07-13 13:53:29.970 UTC +1347 ms font (HTML) GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (16) 
{
  "accept": "application/font-woff2;q=1.0,application/font-woff;q=0.9,*/*;q=0.8",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "priority": "u=2",
  "referer": "https://uatracer.com/?utm_source=stefanjudis&utm_medium=email&utm_campaign=u1f9e2-web-weekly-196-ecmascript-2026-and-wiggly",
  "sec-fetch-dest": "font",
  "sec-fetch-mode": "cors",
  "sec-fetch-site": "same-origin",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-a2ec0a4bff75aa50fc09dc3d5a14a8a0-911f4521dac7363a-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-07-13 13:53:29.970 UTC +1347 ms ES module GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (15) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/?utm_source=stefanjudis&utm_medium=email&utm_campaign=u1f9e2-web-weekly-196-ecmascript-2026-and-wiggly",
  "sec-fetch-dest": "script",
  "sec-fetch-mode": "cors",
  "sec-fetch-site": "same-origin",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-c989926e7acc6e89a4b4ff392bf9f1c5-1bc80b2be213982f-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-07-13 13:53:29.970 UTC +1347 ms preload (image) GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (16) 
{
  "accept": "image/avif,image/webp,image/png,image/svg+xml,image/*;q=0.8,*/*;q=0.5",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "priority": "u=5, i",
  "referer": "https://uatracer.com/?utm_source=stefanjudis&utm_medium=email&utm_campaign=u1f9e2-web-weekly-196-ecmascript-2026-and-wiggly",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-5e14b47db87dc061ed6d787365ea64b2-5eceb348df1d54bd-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-07-13 13:53:29.975 UTC +1352 ms image GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (16) 
{
  "accept": "image/avif,image/webp,image/png,image/svg+xml,image/*;q=0.8,*/*;q=0.5",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "priority": "u=5, i",
  "referer": "https://uatracer.com/?utm_source=stefanjudis&utm_medium=email&utm_campaign=u1f9e2-web-weekly-196-ecmascript-2026-and-wiggly",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-153c53a6d2fc2047183aaf8b3a29319c-1bbe2d02e0b2a95a-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-07-13 13:53:29.977 UTC +1354 ms JS GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (15) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/?utm_source=stefanjudis&utm_medium=email&utm_campaign=u1f9e2-web-weekly-196-ecmascript-2026-and-wiggly",
  "sec-fetch-dest": "script",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-709650f5ade0567ab8f80cf4f4450890-46b6bee700a6fdc4-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-07-13 13:53:30.024 UTC +1401 ms iframe document GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (17) 
{
  "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",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "priority": "u=4",
  "referer": "https://uatracer.com/?utm_source=stefanjudis&utm_medium=email&utm_campaign=u1f9e2-web-weekly-196-ecmascript-2026-and-wiggly",
  "sec-fetch-dest": "iframe",
  "sec-fetch-mode": "navigate",
  "sec-fetch-site": "same-origin",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-eef7c59ed136f28f1c6949ebb0c1ae62-be615adf3ce9a422-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-07-13 13:53:30.548 UTC +1925 ms CSS @import (nested stylesheet) GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (16) 
{
  "accept": "text/css,*/*;q=0.1",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "priority": "u=2",
  "referer": "https://uatracer.com/r/NacoCqDl/n5XgO74Q/style.css",
  "sec-fetch-dest": "style",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-250933057dfcaacbb15a0ae84beefa1c-4976afbc063bc1f2-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-07-13 13:53:31.217 UTC +2594 ms CSS background-image GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (16) 
{
  "accept": "image/avif,image/webp,image/png,image/svg+xml,image/*;q=0.8,*/*;q=0.5",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "priority": "u=4, i",
  "referer": "https://uatracer.com/r/NacoCqDl/n5XgO74Q/style.css",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-f66235dccad50f5823a482917d688a87-73aa34083d573f47-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-07-13 13:53:31.462 UTC +2839 ms JS executed beacon GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (16) 
{
  "accept": "image/avif,image/webp,image/png,image/svg+xml,image/*;q=0.8,*/*;q=0.5",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "priority": "u=5, i",
  "referer": "https://uatracer.com/?utm_source=stefanjudis&utm_medium=email&utm_campaign=u1f9e2-web-weekly-196-ecmascript-2026-and-wiggly",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-1adb603702427746050401dbd6cabe2a-8adb05bebe8db6af-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-07-13 13:53:31.465 UTC +2842 ms CSP violation report (POST) POST Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (20) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "content-length": "454",
  "content-type": "application/json",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "priority": "u=6",
  "referer": "https://uatracer.com/?utm_source=stefanjudis&utm_medium=email&utm_campaign=u1f9e2-web-weekly-196-ecmascript-2026-and-wiggly",
  "sec-fetch-dest": "empty",
  "sec-fetch-mode": "cors",
  "sec-fetch-site": "same-origin",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-5c165343448ae91cc66e5bdd16f8b60e-0fc411b42857bfb0-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-report-body": "{\"source\":\"securitypolicyviolation\",\"violatedDirective\":\"style-src-attr\",\"effectiveDirective\":\"style-src-attr\",\"blockedURI\":\"inline\",\"documentURI\":\"https://uatracer.com/?utm_source=stefanjudis&utm_medium=email&utm_campaign=u1f9e2-web-weekly-196-ecmascript-2026-and-wiggly\",\"disposition\":\"report\",\"lineNumber\":45,\"sourceFile\":\"https://uatracer.com/r/NacoCqDl/n5XgO74Q/main.js\",\"ua\":\"Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0\"}"
}
2026-07-13 13:53:31.951 UTC +3328 ms image inside iframe GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (16) 
{
  "accept": "image/avif,image/webp,image/png,image/svg+xml,image/*;q=0.8,*/*;q=0.5",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "priority": "u=5, i",
  "referer": "https://uatracer.com/r/NacoCqDl/n5XgO74Q/iframe",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-edf26e238f6d67c2270e208bfa6a704c-ca76f057e502083a-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-07-13 13:53:32.008 UTC +3385 ms ES module executed GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (16) 
{
  "accept": "image/avif,image/webp,image/png,image/svg+xml,image/*;q=0.8,*/*;q=0.5",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "priority": "u=5, i",
  "referer": "https://uatracer.com/?utm_source=stefanjudis&utm_medium=email&utm_campaign=u1f9e2-web-weekly-196-ecmascript-2026-and-wiggly",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-d2bf906daf6237838349a87562c469e9-c261d32918a06559-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-07-13 13:53:32.208 UTC +3585 ms favicon GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (16) 
{
  "accept": "image/avif,image/webp,image/png,image/svg+xml,image/*;q=0.8,*/*;q=0.5",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "priority": "u=6",
  "referer": "https://uatracer.com/?utm_source=stefanjudis&utm_medium=email&utm_campaign=u1f9e2-web-weekly-196-ecmascript-2026-and-wiggly",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-3f8365c720bc3c12301676c615998ff8-26283bc6313f0181-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-07-13 13:53:32.209 UTC +3586 ms apple-touch-icon GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (16) 
{
  "accept": "image/avif,image/webp,image/png,image/svg+xml,image/*;q=0.8,*/*;q=0.5",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "priority": "u=6",
  "referer": "https://uatracer.com/?utm_source=stefanjudis&utm_medium=email&utm_campaign=u1f9e2-web-weekly-196-ecmascript-2026-and-wiggly",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-d4f9ae80ff25668015e255fba4023a0b-1238bc3ce0e8dcbb-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-07-13 13:53:32.410 UTC +3787 ms CSS @font-face GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (15) 
{
  "accept": "application/font-woff2;q=1.0,application/font-woff;q=0.9,*/*;q=0.8",
  "accept-encoding": "identity",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/r/NacoCqDl/n5XgO74Q/style.css",
  "sec-fetch-dest": "font",
  "sec-fetch-mode": "cors",
  "sec-fetch-site": "same-origin",
  "sec-gpc": "1",
  "te": "trailers",
  "traceparent": "00-fc3a6eb6ba4682b6953322cc8ab943b0-60782147370b0ebe-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-07-13 13:53:33.865 UTC +5242 ms client timing POST POST Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (19) 
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  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-7f779a72343f677147e78fc38d24a057-d50607c990d711f9-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-13 18:07:26.171 UTC +15237548 ms favicon GET Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (18) 
{
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  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.9",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "priority": "u=6",
  "referer": "https://uatracer.com/?utm_source=stefanjudis&utm_medium=email&utm_campaign=u1f9e2-web-weekly-196-ecmascript-2026-and-wiggly",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
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  "te": "trailers",
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  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-195a3f7a7ca2fa3c48fb6c3b53dea06b-0dc089a9ee30649c-01",
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}
2026-07-13 18:07:27.884 UTC +15239261 ms client timing POST POST Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0
request headers (21) 
{
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  "accept-language": "en-US,en;q=0.9",
  "content-length": "2474",
  "content-type": "application/json",
  "cookie": "ua-tracer-trace=NacoCqDl",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
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  "sec-fetch-dest": "empty",
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  "sec-fetch-site": "same-origin",
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  "te": "trailers",
  "traceparent": "00-a3b6e3bda6e7638ec10869238f57a673-d8d9bfba08e88b54-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-a3b6e3bda6e7638ec10869238f57a673-2e16a1a9b9cda1c6-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-16 03:30:01.961 UTC +221793338 ms CSS background-image GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36
request headers (9) 
{
  "accept-encoding": "gzip,deflate",
  "connection": "close",
  "host": "uatracer.com",
  "traceparent": "00-70722e0bf9bd487477a7d7f92df2e6c0-e8d16cba554516d4-01",
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  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-70722e0bf9bd487477a7d7f92df2e6c0-c02483e9b7ea8578-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-16 05:04:11.610 UTC +227442987 ms image GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36
request headers (9) 
{
  "accept-encoding": "gzip,deflate",
  "connection": "close",
  "host": "uatracer.com",
  "traceparent": "00-ad10c5aae786b6a75d765a91c43ca651-dda0d7c58b8c4b1f-01",
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  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-ad10c5aae786b6a75d765a91c43ca651-fdfcb48fe4bb03dc-01",
  "x-deno-userspace-tracestate": ""
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2026-07-16 05:44:30.284 UTC +229861661 ms preload (image) GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36
request headers (9) 
{
  "accept-encoding": "gzip,deflate",
  "connection": "close",
  "host": "uatracer.com",
  "traceparent": "00-175fd6fbfe2f74ecfcaa1610af9b15a3-b46e87ccd4065600-01",
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  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-175fd6fbfe2f74ecfcaa1610af9b15a3-abc56991a3cf8379-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-16 15:12:42.879 UTC +263954256 ms CSP violation report (POST) GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36
request headers (7) 
{
  "accept-encoding": "gzip,deflate",
  "connection": "close",
  "host": "uatracer.com",
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  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
2026-07-16 16:35:43.251 UTC +268934628 ms favicon GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36
request headers (7) 
{
  "accept-encoding": "gzip,deflate",
  "connection": "close",
  "host": "uatracer.com",
  "traceparent": "00-e9f6cfc1cfbeefc237a4d5b10e7495eb-5d0c3d4adc18abe6-01",
  "tracestate": "",
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  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
2026-07-16 20:19:38.617 UTC +282369994 ms ES module executed GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36
request headers (7) 
{
  "accept-encoding": "gzip,deflate",
  "connection": "close",
  "host": "uatracer.com",
  "traceparent": "00-eee65f6887d860bf19f9b1bc9dac7712-21144c34d88f32ce-01",
  "tracestate": "",
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  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
2026-07-16 22:59:31.907 UTC +291963284 ms JS executed beacon GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36
request headers (7) 
{
  "accept-encoding": "gzip,deflate",
  "connection": "close",
  "host": "uatracer.com",
  "traceparent": "00-5e78b787223a14eb24dba7f7ea3a1dd3-8e6dc932c2ef541a-01",
  "tracestate": "",
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  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
2026-07-16 22:59:47.394 UTC +291978771 ms apple-touch-icon GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36
request headers (7) 
{
  "accept-encoding": "gzip,deflate",
  "connection": "close",
  "host": "uatracer.com",
  "traceparent": "00-cd7fb4dd3c705bad8119776b4d6278da-40bcdffcda863e3c-01",
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  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
2026-07-16 23:53:29.281 UTC +295200658 ms iframe document GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36
request headers (7) 
{
  "accept-encoding": "gzip,deflate",
  "connection": "close",
  "host": "uatracer.com",
  "traceparent": "00-1c0c8c1d6551ad1786f38117774c74ec-6408700d00195158-01",
  "tracestate": "",
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  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
2026-07-19 02:10:47.857 UTC +476239234 ms iframe document 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 (12) 
{
  "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",
  "traceparent": "00-6c22032b9bdfadfe1b50d38020fb7c51-79dad007eac06044-01",
  "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"
}

Client-side resource waterfall

Reported by performance.getEntriesByType('resource') after JS ran in the UA. This proves a real browser-grade engine, not just a downloader.

ResourceInitiatorStartDurationTimeline
font.woff2 other 2083ms 433ms
style.css link 2083ms 617ms
preload.png link 2083ms 850ms
photo.png img 2100ms 1050ms
main.js script 2100ms 1500ms
module.js script 2100ms 2067ms
iframe iframe 2167ms 1933ms
apple-touch-icon.png other 2167ms 3117ms
favicon.ico other 2167ms 3283ms
import.css css 2700ms 667ms
css-bg.png css 3383ms 450ms
csp-report other 3617ms 450ms
js-ran.gif?t=1783950811435 img 3617ms 650ms
module-ran.gif?t=1783950812002 img 4167ms 617ms
css-font.woff2 other 4583ms 400ms