ua-tracer by Paul Kinlan

ua-tracer

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

← all traces

Trace XlKhCgLT

First seen: 2026-06-22 13:19:05.000 UTC
User-Agent: Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1

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
2026-06-22 13:19:05.000 UTC +0 ms homepage GET Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1
request headers (11) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
  "accept-encoding": "zstd,gzip,br",
  "accept-language": "en-US,en;q=0.9",
  "host": "uatracer.com",
  "sec-fetch-dest": "document",
  "sec-fetch-mode": "navigate",
  "sec-fetch-site": "none",
  "traceparent": "00-89b5001eb32d60f0dda9a19f6d5406fa-c957a4dd4bebb68a-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-06-22 13:19:05.359 UTC +359 ms web app manifest GET Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1
request headers (11) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
  "accept-encoding": "zstd,gzip,br",
  "accept-language": "en-US,en;q=0.9",
  "host": "uatracer.com",
  "sec-fetch-dest": "document",
  "sec-fetch-mode": "navigate",
  "sec-fetch-site": "none",
  "traceparent": "00-eeebeb03909f90fe0aa465cbd892caf9-9fd3c9ecf87103c3-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-06-22 13:19:05.626 UTC +626 ms favicon GET Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1
request headers (11) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
  "accept-encoding": "zstd,gzip,br",
  "accept-language": "en-US,en;q=0.9",
  "host": "uatracer.com",
  "sec-fetch-dest": "document",
  "sec-fetch-mode": "navigate",
  "sec-fetch-site": "none",
  "traceparent": "00-5f36b3fcb29e92dd697558f6ec364f00-d4bb3411fedeb2df-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-06-22 13:19:05.626 UTC +626 ms apple-touch-icon GET Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1
request headers (11) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
  "accept-encoding": "zstd,gzip,br",
  "accept-language": "en-US,en;q=0.9",
  "host": "uatracer.com",
  "sec-fetch-dest": "document",
  "sec-fetch-mode": "navigate",
  "sec-fetch-site": "none",
  "traceparent": "00-49c247fb03c459882a6dab7aa5af9f1f-da8fb43d2d348d45-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-06-22 13:19:05.626 UTC +626 ms manifest icon GET Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1
request headers (11) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
  "accept-encoding": "zstd,gzip,br",
  "accept-language": "en-US,en;q=0.9",
  "host": "uatracer.com",
  "sec-fetch-dest": "document",
  "sec-fetch-mode": "navigate",
  "sec-fetch-site": "none",
  "traceparent": "00-d952c113de5d30df950b698550cc450f-e298e5a9d35583c4-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-06-22 13:19:06.158 UTC +1158 ms CSS GET Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1
request headers (12) 
{
  "accept": "text/css,*/*;q=0.1",
  "accept-encoding": "zstd,gzip,br",
  "accept-language": "en-US,en;q=0.9",
  "host": "uatracer.com",
  "referer": "https://uatracer.com",
  "sec-fetch-dest": "style",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-b4568a826fb9b34f340faccfcd1f871d-47a05122e2031353-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-06-22 13:19:06.225 UTC +1225 ms JS GET Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1
request headers (12) 
{
  "accept": "*/*",
  "accept-encoding": "zstd,gzip,br",
  "accept-language": "en-US,en;q=0.9",
  "host": "uatracer.com",
  "referer": "https://uatracer.com",
  "sec-fetch-dest": "script",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-c8bc2244811935060b02d95c3db18074-db975def5db54f22-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-06-22 13:19:06.230 UTC +1230 ms image GET Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1
request headers (12) 
{
  "accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "zstd,gzip,br",
  "accept-language": "en-US,en;q=0.9",
  "host": "uatracer.com",
  "referer": "https://uatracer.com",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-3b57b904d77ea7216dfb79ff379efd53-2dc716f4a5bce3f2-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-06-22 13:19:06.230 UTC +1230 ms ES module GET Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1
request headers (12) 
{
  "accept": "*/*",
  "accept-encoding": "zstd,gzip,br",
  "accept-language": "en-US,en;q=0.9",
  "host": "uatracer.com",
  "referer": "https://uatracer.com",
  "sec-fetch-dest": "script",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-3f79687b47c204557b5d64dd49e4b475-f4dbdc6c3c85fd7e-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (iPad; CPU OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}