ua-tracer by Paul Kinlan

trace oG3d6XsB

ua-tracer

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

← all traces

Trace oG3d6XsB

First seen: 2026-08-21 02:15:01.988 UTC
User-Agent: Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)
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
2026-08-21 02:15:01.988 UTC +0 ms homepage GET Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)
request headers (8) 
{
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-9060e226d0e11649a2855911e94d1cde-72e21a3422138a8d-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-9060e226d0e11649a2855911e94d1cde-7c879183e07c3ef4-01",
  "x-deno-userspace-tracestate": ""
}
2026-08-21 02:15:05.049 UTC +3061 ms JS GET Mozilla/5.0 (compatible; xAI-SearchBot/1.0; +https://x.ai)
request headers (6) 
{
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-0a799a5e59ca70b6d42438addb1656f5-dca35c2552ff2d8a-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; xAI-SearchBot/1.0; +https://x.ai)",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
2026-08-21 02:15:05.059 UTC +3071 ms ES module GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.3; +https://openai.com/gptbot)
request headers (6) 
{
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-fd7ce2ee088c3221de7e9e29ad62288c-194a9b3ae30611e4-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.3; +https://openai.com/gptbot)",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
2026-08-21 02:15:09.478 UTC +7490 ms web app manifest GET Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)
request headers (8) 
{
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-f78314faf34f6a77dcb0b096de95881b-c436797b0e5e956c-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-f78314faf34f6a77dcb0b096de95881b-000a6a18efb02892-01",
  "x-deno-userspace-tracestate": ""
}