ua-tracer by Paul Kinlan

trace FgZxtfnf

ua-tracer

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

← all traces

Trace FgZxtfnf

First seen: 2026-08-06 12:19:26.686 UTC
User-Agent: Mozilla/5.0 (Linux; Android 13; V2132A Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/97.0.4692.98 Mobile Safari/537.36 T7/15.56 SP-engine/3.57.0 bd_dvt/0 baiduboxapp/15.58.0.10 (Baidu; P1 13) NABar/1.0
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
2026-08-06 12:19:26.686 UTC +0 ms homepage GET Mozilla/5.0 (Linux; Android 13; V2132A Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/97.0.4692.98 Mobile Safari/537.36 T7/15.56 SP-engine/3.57.0 bd_dvt/0 baiduboxapp/15.58.0.10 (Baidu; P1 13) NABar/1.0
request headers (19) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9",
  "accept-encoding": "gzip, deflate",
  "accept-language": "zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7",
  "host": "uatracer.com",
  "purpose": "prefetch",
  "referer": "https://m.baidu.com/",
  "sec-fetch-dest": "document",
  "sec-fetch-mode": "navigate",
  "sec-fetch-site": "cross-site",
  "traceparent": "00-e91e2e190038979248ca6265c7d7e68c-c646f6da37f7675d-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (Linux; Android 13; V2132A Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/97.0.4692.98 Mobile Safari/537.36 T7/15.56 SP-engine/3.57.0 bd_dvt/0 baiduboxapp/15.58.0.10 (Baidu; P1 13) NABar/1.0",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net",
  "x-bd-traceid": "cab05a9b4e0f459bafe32446ba5e3955",
  "x-deno-userspace-traceparent": "00-e91e2e190038979248ca6265c7d7e68c-9c227644318abe58-01",
  "x-deno-userspace-tracestate": "",
  "x-from-h3-trnet": "true",
  "x-requested-with": "com.baidu.searchbox"
}
2026-08-06 12:19:29.695 UTC +3009 ms CSS GET Mozilla/5.0 (Linux; Android 13; V2132A Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/97.0.4692.98 Mobile Safari/537.36 T7/15.56 SP-engine/3.57.0 bd_dvt/0 baiduboxapp/15.58.0.10 (Baidu; P1 13) NABar/1.0
request headers (19) 
{
  "accept": "application/signed-exchange;v=b3;q=0.7,*/*;q=0.8",
  "accept-encoding": "gzip, deflate",
  "accept-language": "zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7",
  "cookie": "ua-tracer-trace=FgZxtfnf",
  "host": "uatracer.com",
  "purpose": "prefetch",
  "referer": "https://uatracer.com/",
  "sec-fetch-dest": "empty",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-e2164a2925ceba0eb7be4e30d540b324-b3c47531d0b418cb-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 13; V2132A Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/97.0.4692.98 Mobile Safari/537.36 T7/15.56 SP-engine/3.57.0 bd_dvt/0 baiduboxapp/15.58.0.10 (Baidu; P1 13) NABar/1.0",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net",
  "x-bd-traceid": "4f4179efff1e4d73acab7d01ecaeba79",
  "x-deno-userspace-traceparent": "00-e2164a2925ceba0eb7be4e30d540b324-4e43b622acd4ef6d-01",
  "x-deno-userspace-tracestate": "",
  "x-from-h3-trnet": "true",
  "x-requested-with": "com.baidu.searchbox"
}
2026-08-06 12:19:29.946 UTC +3260 ms JS GET Mozilla/5.0 (Linux; Android 13; V2132A Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/97.0.4692.98 Mobile Safari/537.36 T7/15.56 SP-engine/3.57.0 bd_dvt/0 baiduboxapp/15.58.0.10 (Baidu; P1 13) NABar/1.0
request headers (19) 
{
  "accept": "application/signed-exchange;v=b3;q=0.7,*/*;q=0.8",
  "accept-encoding": "gzip, deflate",
  "accept-language": "zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7",
  "cookie": "ua-tracer-trace=FgZxtfnf",
  "host": "uatracer.com",
  "purpose": "prefetch",
  "referer": "https://uatracer.com/",
  "sec-fetch-dest": "empty",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-79c872391f6f198b49060fe3053c1de0-5be615425f78b7ff-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 13; V2132A Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/97.0.4692.98 Mobile Safari/537.36 T7/15.56 SP-engine/3.57.0 bd_dvt/0 baiduboxapp/15.58.0.10 (Baidu; P1 13) NABar/1.0",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net",
  "x-bd-traceid": "68428d65204843f2ad76faa9c717b076",
  "x-deno-userspace-traceparent": "00-79c872391f6f198b49060fe3053c1de0-f95c793774ef8e87-01",
  "x-deno-userspace-tracestate": "",
  "x-from-h3-trnet": "true",
  "x-requested-with": "com.baidu.searchbox"
}
2026-08-06 12:19:30.654 UTC +3968 ms ES module GET Mozilla/5.0 (Linux; Android 13; V2132A Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/97.0.4692.98 Mobile Safari/537.36 T7/15.56 SP-engine/3.57.0 bd_dvt/0 baiduboxapp/15.58.0.10 (Baidu; P1 13) NABar/1.0
request headers (19) 
{
  "accept": "application/signed-exchange;v=b3;q=0.7,*/*;q=0.8",
  "accept-encoding": "gzip, deflate",
  "accept-language": "zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7",
  "cookie": "ua-tracer-trace=FgZxtfnf",
  "host": "uatracer.com",
  "purpose": "prefetch",
  "referer": "https://uatracer.com/",
  "sec-fetch-dest": "empty",
  "sec-fetch-mode": "no-cors",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-0009322d38a037e7ed24c1792f4201c5-6f631acc87258c9f-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Linux; Android 13; V2132A Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/97.0.4692.98 Mobile Safari/537.36 T7/15.56 SP-engine/3.57.0 bd_dvt/0 baiduboxapp/15.58.0.10 (Baidu; P1 13) NABar/1.0",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net",
  "x-bd-traceid": "928e0aa27c414c08bf5c830014f39a08",
  "x-deno-userspace-traceparent": "00-0009322d38a037e7ed24c1792f4201c5-87b7748eed394b8c-01",
  "x-deno-userspace-tracestate": "",
  "x-from-h3-trnet": "true",
  "x-requested-with": "com.baidu.searchbox"
}