ua-tracer by Paul Kinlan

ua-tracer

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

← all traces

Trace CuY1V4sa

First seen: 2026-06-25 15:22:29.442 UTC
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 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
2026-06-25 15:22:29.442 UTC +0 ms homepage GET Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (18) 
{
  "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",
  "cache-control": "no-cache",
  "host": "uatracer.com",
  "pragma": "no-cache",
  "priority": "u=0, i",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "document",
  "sec-fetch-mode": "navigate",
  "sec-fetch-site": "none",
  "sec-fetch-user": "?1",
  "traceparent": "00-32f614962fcb4e5b1d3e8b16f122b0ed-be0d297228e02c82-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
2026-06-25 15:22:35.784 UTC +6342 ms CSS GET Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (17) 
{
  "accept": "text/css,*/*;q=0.1",
  "accept-encoding": "gzip, deflate, br",
  "cache-control": "no-cache",
  "host": "uatracer.com",
  "pragma": "no-cache",
  "priority": "u=0",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "style",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-5bcb3faf07e2a71a001850b792a45cce-8ec75c1a62050369-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
2026-06-25 15:22:35.785 UTC +6343 ms font (HTML) GET Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (18) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "cache-control": "no-cache",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "pragma": "no-cache",
  "priority": "u=1",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "font",
  "sec-fetch-mode": "cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-586dc7212709aadf090276a05036e1ee-f31379bcfa5ad81b-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
2026-06-25 15:22:35.786 UTC +6344 ms JS GET Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (17) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "cache-control": "no-cache",
  "host": "uatracer.com",
  "pragma": "no-cache",
  "priority": "u=2",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "script",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-c6b4a7f034b33a8a6c659b19b9ebc303-a76ea49f203c9f55-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
2026-06-25 15:22:35.789 UTC +6347 ms ES module GET Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (18) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "cache-control": "no-cache",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "pragma": "no-cache",
  "priority": "u=1",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "script",
  "sec-fetch-mode": "cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-d7749ed806e0e6c7223f8c58502cfee2-f13567bf342ab0cf-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
2026-06-25 15:22:35.790 UTC +6348 ms image GET Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (17) 
{
  "accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "gzip, deflate, br",
  "cache-control": "no-cache",
  "host": "uatracer.com",
  "pragma": "no-cache",
  "priority": "i",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-68c958014588ca61874ab6d5405ed842-beac44b790461138-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
2026-06-25 15:22:35.792 UTC +6350 ms preload (image) GET Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (17) 
{
  "accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "gzip, deflate, br",
  "cache-control": "no-cache",
  "host": "uatracer.com",
  "pragma": "no-cache",
  "priority": "i",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-ad5a8c5d857c55eaa782c95a09b77781-f2beebb59639f441-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
2026-06-25 15:22:35.793 UTC +6351 ms prefetch GET Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (18) 
{
  "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",
  "cache-control": "no-cache",
  "host": "uatracer.com",
  "pragma": "no-cache",
  "priority": "u=4, i",
  "purpose": "prefetch",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "empty",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-0c5e8b6c7512b812c4d304a5f167691f-6fc5abba6665a6c6-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
2026-06-25 15:22:35.808 UTC +6366 ms iframe document GET Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (18) 
{
  "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",
  "cache-control": "no-cache",
  "host": "uatracer.com",
  "pragma": "no-cache",
  "priority": "u=0, i",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "iframe",
  "sec-fetch-mode": "navigate",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-6453658df8d3076326e339cc4e7c964e-f6685d981d314054-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
2026-06-25 15:22:37.243 UTC +7801 ms image inside iframe GET Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (17) 
{
  "accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "gzip, deflate, br",
  "cache-control": "no-cache",
  "host": "uatracer.com",
  "pragma": "no-cache",
  "priority": "i",
  "referer": "https://uatracer.com/r/CuY1V4sa/iframe",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-f47e591cb9312e4864e64bfa7cd4b9aa-e2b833217a189b1f-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
2026-06-25 15:22:38.473 UTC +9031 ms CSS @import (nested stylesheet) GET Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (17) 
{
  "accept": "text/css,*/*;q=0.1",
  "accept-encoding": "gzip, deflate, br",
  "cache-control": "no-cache",
  "host": "uatracer.com",
  "pragma": "no-cache",
  "priority": "u=0",
  "referer": "https://uatracer.com/r/CuY1V4sa/style.css",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "style",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-a62d5c448d2304501bc7398d523d7ff9-4dcf55f3ca73f8bf-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
2026-06-25 15:22:39.004 UTC +9562 ms JS executed beacon GET Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (17) 
{
  "accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "gzip, deflate, br",
  "cache-control": "no-cache",
  "host": "uatracer.com",
  "pragma": "no-cache",
  "priority": "i",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-662a9244a63d72d156fa734616a51991-1704eecfdfcfb4e0-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
2026-06-25 15:22:39.006 UTC +9564 ms CSS background-image GET Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (17) 
{
  "accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "gzip, deflate, br",
  "cache-control": "no-cache",
  "host": "uatracer.com",
  "pragma": "no-cache",
  "priority": "i",
  "referer": "https://uatracer.com/r/CuY1V4sa/style.css",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-b09a44fbf6357d39a16e6b6e5db4c237-03dd8757a526d1ea-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
2026-06-25 15:22:39.009 UTC +9567 ms CSS @font-face GET Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (18) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "cache-control": "no-cache",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "pragma": "no-cache",
  "priority": "u=0",
  "referer": "https://uatracer.com/r/CuY1V4sa/style.css",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "font",
  "sec-fetch-mode": "cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-491008fbdc20986e26bdc74e84ff86ea-7953c0703c9c3556-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
2026-06-25 15:22:39.048 UTC +9606 ms CSP violation report (POST) POST Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (21) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "cache-control": "no-cache",
  "content-length": "386",
  "content-type": "application/json",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "pragma": "no-cache",
  "priority": "u=4, i",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "empty",
  "sec-fetch-mode": "cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-747ff7cb2bf50f65bded1485d8be248b-51b5fb2e0faa32a0-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net",
  "x-report-body": "{\"source\":\"securitypolicyviolation\",\"violatedDirective\":\"style-src-attr\",\"effectiveDirective\":\"style-src-attr\",\"blockedURI\":\"inline\",\"documentURI\":\"https://uatracer.com/\",\"disposition\":\"report\",\"lineNumber\":45,\"sourceFile\":\"https://uatracer.com/r/CuY1V4sa/main.js\",\"ua\":\"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36\"}"
}
2026-06-25 15:22:39.053 UTC +9611 ms Reporting API report (POST) POST Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (21) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "cache-control": "no-cache",
  "content-length": "1743",
  "content-type": "application/json",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "pragma": "no-cache",
  "priority": "u=4, i",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "empty",
  "sec-fetch-mode": "cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-63da408446e5b87de57c18cb88fb084b-2105b1dbdaec24b0-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net",
  "x-report-body": "{\"source\":\"ReportingObserver\",\"reports\":[{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":9,\"columnNumber\":0,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-elem\",\"originalPolicy\":\"style-src 'self'; report-uri /r/CuY1V4sa/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":213,\"columnNumber\":0,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"style-src 'self'; report-uri /r/CuY1V4sa/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":721,\"columnNumber\":0,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"style-src 'self'; report-uri /r/CuY1V4sa/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/r/CuY1V4sa/main.js\",\"lineNumber\":45,\"columnNumber\":11,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"style-src 'self'; report-uri /r/CuY1V4sa/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}}],\"ua\":\"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36\"}"
}
2026-06-25 15:22:39.053 UTC +9611 ms ES module executed GET Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (17) 
{
  "accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "gzip, deflate, br",
  "cache-control": "no-cache",
  "host": "uatracer.com",
  "pragma": "no-cache",
  "priority": "i",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-cef7398430fb12f971ed870dafc4ffbe-04d3f80a5ed0cf9a-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
2026-06-25 15:22:41.297 UTC +11855 ms client timing POST POST Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36
request headers (20) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "cache-control": "no-cache",
  "content-length": "2508",
  "content-type": "application/json",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "pragma": "no-cache",
  "priority": "u=4, i",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"HeadlessChrome\";v=\"125\", \"Chromium\";v=\"125\", \"Not.A/Brand\";v=\"24\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Linux\"",
  "sec-fetch-dest": "empty",
  "sec-fetch-mode": "cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-6e0c50ff38f97ba9ac7b6fe201d85f98-2da73d3016b1660b-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/125.0.6422.60 Safari/537.36",
  "via": "HTTP/2 ams.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
style.css link 13229ms 2682ms
font.woff2 link 13230ms 1322ms
preload.png link 13230ms 1484ms
photo.png img 13230ms 1323ms
main.js script 13230ms 671ms
module.js script 13230ms 2683ms
prefetch.png link 13237ms 742ms
iframe iframe 13244ms 1430ms
import.css css 15917ms 529ms
js-ran.gif?t=1782400958946 img 16450ms 566ms
css-bg.png css 16453ms 976ms
css-font.woff2 css 16453ms 764ms
csp-report beacon 16491ms 1646ms
report beacon 16493ms 1767ms
module-ran.gif?t=1782400958995 img 16499ms 1637ms