ua-tracer by Paul Kinlan

trace 8P52ZwQe

ua-tracer

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

← all traces

Trace 8P52ZwQe

First seen: 2026-07-29 06:58:41.359 UTC
User-Agent: Mozilla/5.0 (compatible; Baiduspider-render/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
2026-07-29 06:58:41.359 UTC +0 ms homepage GET Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (10) 
{
  "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,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "host": "uatracer.com",
  "traceparent": "00-3839a27426680fb9272869e57bc69e14-3148d1d339d5b859-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-07-29 06:58:44.842 UTC +3483 ms font (HTML) GET Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (14) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-7b38574afda1d3c6ce5526e73f9c063b-a7b5227bbca92348-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-7b38574afda1d3c6ce5526e73f9c063b-2d2644b71fcdecd0-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-29 06:58:44.863 UTC +3504 ms preload (image) GET Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (11) 
{
  "accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "gzip",
  "accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-132a80b3dd6abf6a8aed0a71b8d3a981-c5676864fb32b763-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-07-29 06:58:44.875 UTC +3516 ms CSS GET Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (11) 
{
  "accept": "text/css,*/*;q=0.1",
  "accept-encoding": "gzip",
  "accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-722c6d5e5e2648bef756cc61244faf85-66803e7b6688a1f3-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-07-29 06:58:44.876 UTC +3517 ms image GET Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (11) 
{
  "accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "gzip",
  "accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-469d75db4b59a5766d540630c2a5ecf0-7e340c2e855697f6-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-07-29 06:58:44.878 UTC +3519 ms JS GET Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (13) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-54c98b2e699620f3bd4eb4305a4d95c2-cb51dc8d1fa4b315-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-54c98b2e699620f3bd4eb4305a4d95c2-a64927b3808ad664-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-29 06:58:44.890 UTC +3531 ms prefetch GET Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (11) 
{
  "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,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-0c20905830a3931d1eba74824b820c73-154adaf462b65f47-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-07-29 06:58:44.941 UTC +3582 ms iframe document GET Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
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,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-400e9d13edacd7133d92c09263aaea91-2da425f1d872ec8c-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-400e9d13edacd7133d92c09263aaea91-5a227532830296dc-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-29 06:58:44.985 UTC +3626 ms ES module GET Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (14) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-a0197587e4e53168842289018e84591e-69739ebcb025d5cc-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-a0197587e4e53168842289018e84591e-c68b2dc8feecab10-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-29 06:58:47.658 UTC +6299 ms image inside iframe GET Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (13) 
{
  "accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "gzip",
  "accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/r/8P52ZwQe/904r17Iy/iframe",
  "traceparent": "00-695bdf7867af007e6d510b6d4696586b-f1390b86b61172cc-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-695bdf7867af007e6d510b6d4696586b-3ab0de5f103d070f-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-29 06:58:48.638 UTC +7279 ms CSS @import (nested stylesheet) GET Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (13) 
{
  "accept": "text/css,*/*;q=0.1",
  "accept-encoding": "gzip",
  "accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/r/8P52ZwQe/904r17Iy/style.css",
  "traceparent": "00-3fefaff9e580fdf2e2c7ac56e2b95102-6c4637aaa6823ae8-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-3fefaff9e580fdf2e2c7ac56e2b95102-2bc7ccaeda0307a3-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-29 06:58:49.869 UTC +8510 ms CSS @font-face GET Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (12) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/r/8P52ZwQe/904r17Iy/style.css",
  "traceparent": "00-bd51b7cc8ca86f66e72bfcde854f2bc6-405f0e58bc18411f-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-07-29 06:58:49.897 UTC +8538 ms Reporting API report (POST) POST Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (16) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "content-length": "0",
  "content-type": "application/json",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-531a77ece696975ba4a540cd9e8779fb-0a066f8628e022b5-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-531a77ece696975ba4a540cd9e8779fb-8c202660fc0bf1cc-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-29 06:58:49.899 UTC +8540 ms ES module executed GET Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (13) 
{
  "accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "gzip",
  "accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-442eed53e0973a6ef622676a65734944-280d893afbdc912b-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-442eed53e0973a6ef622676a65734944-e2d59918b228bc07-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-29 06:58:49.901 UTC +8542 ms CSS background-image GET Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (13) 
{
  "accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "gzip",
  "accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/r/8P52ZwQe/904r17Iy/style.css",
  "traceparent": "00-1226190fd04bf41e669ac6e7b6dc5f50-bd5463d3018b2dc5-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-1226190fd04bf41e669ac6e7b6dc5f50-2a5ec503a901fcfe-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-29 06:58:49.949 UTC +8590 ms CSP violation report (POST) POST Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (16) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "content-length": "0",
  "content-type": "application/json",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-1046c4c38447a79ddc72349431965b18-4b0d3c3c5ebd9b17-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-1046c4c38447a79ddc72349431965b18-95aaba41f3c41738-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-29 06:58:50.073 UTC +8714 ms JS executed beacon GET Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (13) 
{
  "accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
  "accept-encoding": "gzip",
  "accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-1ac8c2f6c1df8ce118d2a2dae69178d2-5ffb893aa3867b70-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-1ac8c2f6c1df8ce118d2a2dae69178d2-d24d208777e6ba0b-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-29 06:58:53.129 UTC +11770 ms client timing POST POST Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
request headers (16) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
  "connection": "Close",
  "content-length": "0",
  "content-type": "application/json",
  "cookie": "ua-tracer-trace=8P52ZwQe",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-823165eb37b60f3cb8e0ba4cd5472e61-6b423476129fb519-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-823165eb37b60f3cb8e0ba4cd5472e61-b4ee12a8b3d7a39c-01",
  "x-deno-userspace-tracestate": ""
}
2026-07-31 19:32:22.905 UTC +218021546 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 (7) 
{
  "accept-encoding": "gzip,deflate",
  "connection": "close",
  "host": "uatracer.com",
  "traceparent": "00-5a2c1b6883cea1f474012b6799af2197-53103ce16055a3cd-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"
}

Client-side resource waterfall

JS executed (beacon hit) but no resource-timing payload was posted (UA may block sendBeacon/fetch or strip the body).