ua-tracer by Paul Kinlan

trace ZXpq8YkD

ua-tracer

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

← all traces

Trace ZXpq8YkD

First seen: 2026-10-03 06:34:33.899 UTC
User-Agent: Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)
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
2026-10-03 06:34:33.899 UTC +0 ms homepage GET Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)
request headers (14) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/heif,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.5",
  "host": "uatracer.com",
  "priority": "u=0, i",
  "sec-fetch-dest": "document",
  "sec-fetch-mode": "navigate",
  "sec-fetch-site": "none",
  "sec-fetch-user": "?1",
  "traceparent": "00-c7a4d338ef248aa243c0b4ec7c54616f-daa4d6006e6be08b-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-10-03 06:34:34.609 UTC +710 ms CSS GET Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)
request headers (14) 
{
  "accept": "text/css,*/*;q=0.1",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.5",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "priority": "u=0",
  "referer": "https://uatracer.com/",
  "sec-fetch-dest": "style",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-d66e206ae6cb803c2aaea41eb80ab714-a9068ea0ce292912-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-10-03 06:34:34.815 UTC +916 ms preload (image) GET Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)
request headers (15) 
{
  "accept": "image/heif,image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "identity",
  "accept-language": "en-US,en;q=0.5",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "priority": "i",
  "range": "bytes=0-499",
  "referer": "https://uatracer.com/",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-23b96adf5fa3286c03adaf1b33fe8a64-5090d5b626fcd7d9-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-10-03 06:34:35.022 UTC +1123 ms CSS @import (nested stylesheet) GET Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)
request headers (14) 
{
  "accept": "text/css,*/*;q=0.1",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.5",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "priority": "u=0",
  "referer": "https://uatracer.com/r/ZXpq8YkD/6GtJo1b8/style.css",
  "sec-fetch-dest": "style",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-3e723d1907af0a812183b04eeb7ffd0c-d63d0b3eb73534e8-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-10-03 06:34:35.023 UTC +1124 ms image GET Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)
request headers (15) 
{
  "accept": "image/heif,image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "identity",
  "accept-language": "en-US,en;q=0.5",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "priority": "i",
  "range": "bytes=0-499",
  "referer": "https://uatracer.com/",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-88039106b16db28e639adfba2c503a4d-9c6365ead094af83-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-10-03 06:34:35.023 UTC +1124 ms iframe document GET Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)
request headers (15) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/heif,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7",
  "accept-encoding": "gzip, deflate, br, zstd",
  "accept-language": "en-US,en;q=0.5",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "priority": "u=0, i",
  "referer": "https://uatracer.com/",
  "sec-fetch-dest": "iframe",
  "sec-fetch-mode": "navigate",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-55d6a87a44dfe1d18a07731be114bbb5-17aaf35a0aaf5a2b-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-10-03 06:34:35.387 UTC +1488 ms CSS background-image GET Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)
request headers (15) 
{
  "accept": "image/heif,image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "identity",
  "accept-language": "en-US,en;q=0.5",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "priority": "i",
  "range": "bytes=0-499",
  "referer": "https://uatracer.com/r/ZXpq8YkD/6GtJo1b8/style.css",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-10574a81a83148f59e15fed792ba05f3-edfd69280a3c82a2-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-10-03 06:34:35.595 UTC +1696 ms image inside iframe GET Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)
request headers (15) 
{
  "accept": "image/heif,image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "identity",
  "accept-language": "en-US,en;q=0.5",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "priority": "i",
  "range": "bytes=0-499",
  "referer": "https://uatracer.com/r/ZXpq8YkD/6GtJo1b8/iframe",
  "sec-fetch-dest": "image",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-bfc143044c0d7108a4a34190bf502f34-847abd77f71cc1ce-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-10-03 12:03:10.188 UTC +19716289 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 (14) 
{
  "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": "00-6dd2b7f831a3a437cd49a0b097c791a9-f877d5e8e0adce77-01",
  "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",
  "x-deno-userspace-traceparent": "00-6dd2b7f831a3a437cd49a0b097c791a9-df4a8d2e9e4a7c00-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-05 10:33:08.995 UTC +187115096 ms image inside iframe GET Mozilla/5.0 (compatible; crawler)
request headers (11) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate",
  "accept-language": "en-US",
  "connection": "keep-alive",
  "host": "uatracer.com",
  "traceparent": "00-4572bde7b8ff67e6e5d9601ed8af5c5f-2a68759085432711-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; crawler)",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-4572bde7b8ff67e6e5d9601ed8af5c5f-54c19b8f08cec9cf-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-05 14:09:12.561 UTC +200078662 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 (9) 
{
  "accept-encoding": "gzip,deflate",
  "connection": "close",
  "host": "uatracer.com",
  "traceparent": "00-a8eaeaee218793f91d33afd45c919492-cb9ccf83810b32c9-01",
  "tracestate": "",
  "user-agent": "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",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-a8eaeaee218793f91d33afd45c919492-cb6c34a57c2c0aad-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-05 14:09:15.949 UTC +200082050 ms image inside iframe 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": "00-4518821ce3339e71742f8c24d1be91ed-cb0557b4d20ab921-01",
  "tracestate": "",
  "user-agent": "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",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-4518821ce3339e71742f8c24d1be91ed-6e71f9c4b26b9c90-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-24 21:09:49.559 UTC +1866915660 ms image GET Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)
request headers (10) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "accept-language": "zh,zh-CN;q=0.9",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "sec-fetch-dest": "document",
  "traceparent": "00-f7d3a61fe964e24908c3ef079b0515a1-5c94971af97a002e-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-10-25 09:49:30.411 UTC +1912496512 ms image inside iframe GET Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)
request headers (10) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "accept-language": "zh,zh-CN;q=0.9",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "sec-fetch-dest": "document",
  "traceparent": "00-138faf2d94c02354b3d7a2766a1db1d7-195f9d48da41c65f-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-10-25 10:37:25.957 UTC +1915372058 ms Open Graph image GET Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)
request headers (12) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "accept-language": "zh,zh-CN;q=0.9",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "sec-fetch-dest": "document",
  "traceparent": "00-073ec3e90579aaeb70f1b46d0dfbed9e-8afcc593cb15d1a1-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-073ec3e90579aaeb70f1b46d0dfbed9e-838c9cd7fdf2e1ad-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-25 15:30:47.908 UTC +1932974009 ms Twitter card image GET Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)
request headers (12) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "accept-language": "zh,zh-CN;q=0.9",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "sec-fetch-dest": "document",
  "traceparent": "00-c98b022a3a45b1ad8e5931cf2dce5996-1f7b556d4c3d54eb-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-c98b022a3a45b1ad8e5931cf2dce5996-2bd41b88abf14574-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-27 08:33:29.047 UTC +2080735148 ms iframe document GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Reflectionbot/1.0; +https://reflection.ai/bot) Chrome/151.0.0.0 Safari/537.36
request headers (15) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8",
  "accept-encoding": "gzip,deflate,br",
  "accept-language": "en-US,en;q=0.9",
  "host": "uatracer.com",
  "sec-fetch-dest": "document",
  "sec-fetch-mode": "navigate",
  "sec-fetch-site": "none",
  "sec-fetch-user": "?1",
  "traceparent": "00-d2394e3edad78c0c42a3fe2f722ba362-638776f4a4ef731c-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Reflectionbot/1.0; +https://reflection.ai/bot) Chrome/151.0.0.0 Safari/537.36",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-d2394e3edad78c0c42a3fe2f722ba362-b5c49f52d267f815-01",
  "x-deno-userspace-tracestate": ""
}