ua-tracer
by Paul Kinlan
trace 83bXgQy7
what does a user agent actually fetch, follow & run?
Trace 83bXgQy7
First seen: 2026-07-31 08:52:57.476 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.
| Received | Δ | Kind | Method | User-Agent |
|---|---|---|---|---|
| 2026-07-31 08:52:57.476 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-db817bc1ff763e9d170da02d55a18d21-5a0f5fe0d520cd09-01",
"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"
}
|
||||
| 2026-07-31 08:53:00.966 UTC | +3490 ms | prefetch | GET | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (13){
"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=83bXgQy7",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-d7b440899b3ec35b773e3a10bc6e1c78-1390da11cd24569d-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-d7b440899b3ec35b773e3a10bc6e1c78-5915ac10fd2ead79-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-07-31 08:53:00.967 UTC | +3491 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=83bXgQy7",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-fb15c762d6335f7325a7f18bddcd33c2-91e83b7e24a495b2-01",
"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-fb15c762d6335f7325a7f18bddcd33c2-a79bb8b83cbf7912-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-07-31 08:53:01.030 UTC | +3554 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=83bXgQy7",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-7e1cd016a1efe70b809cefa61fb8c683-185618ab34340c0e-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": "00-7e1cd016a1efe70b809cefa61fb8c683-4f822812e8f7d02f-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-07-31 08:53:01.041 UTC | +3565 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=83bXgQy7",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-5a8d160be6419c438395708b297d8f31-aa986feab85a10f4-01",
"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": "00-5a8d160be6419c438395708b297d8f31-7f2f7158ff7c5fd6-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-07-31 08:53:01.042 UTC | +3566 ms | preload (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=83bXgQy7",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-c6adea43395b45ca6461937dbd0a1476-bd4f4a7269939aed-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-c6adea43395b45ca6461937dbd0a1476-ad60defb4d651f05-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-07-31 08:53:01.042 UTC | +3566 ms | CSS | 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=83bXgQy7",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-0f3cc653a9bb21bfa7b7986bf99eb749-4a35e4c84e59be93-01",
"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": "00-0f3cc653a9bb21bfa7b7986bf99eb749-9142f3240e7e4768-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-07-31 08:53:01.042 UTC | +3566 ms | 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=83bXgQy7",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-6b5af93027c0c21b185a4e2aac2c6114-c58d24726d448789-01",
"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": "00-6b5af93027c0c21b185a4e2aac2c6114-a174c9b11b9a592f-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-07-31 08:53:01.078 UTC | +3602 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=83bXgQy7",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-29602f5d22d09aa6c3dbb026a076769f-bb03947612cc5ddb-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": "00-29602f5d22d09aa6c3dbb026a076769f-e1c579ed3fc23c4b-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-07-31 08:53:04.570 UTC | +7094 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=83bXgQy7",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/83bXgQy7/HCe7vW18/style.css",
"traceparent": "00-bd134782a978758e9d87ead9f0eb8dfc-5be8f4617afab4a9-01",
"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-bd134782a978758e9d87ead9f0eb8dfc-a82b5d710a04f67f-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-07-31 08:53:05.010 UTC | +7534 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=83bXgQy7",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/83bXgQy7/HCe7vW18/iframe",
"traceparent": "00-f2e2cf0ec07e35719692b205e9df2641-8adf2445fc68ed99-01",
"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-f2e2cf0ec07e35719692b205e9df2641-f786ad0ff417f4a4-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-07-31 08:53:05.858 UTC | +8382 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=83bXgQy7",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-15d4f671505787b5fb6baa738d0c9781-2c8d086d93e96276-01",
"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": "00-15d4f671505787b5fb6baa738d0c9781-397d3b90f891d65b-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-07-31 08:53:05.870 UTC | +8394 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=83bXgQy7",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/83bXgQy7/HCe7vW18/style.css",
"traceparent": "00-f0ab51cfbd94935f9cd5b009f673f292-0f8f3206dc750c06-01",
"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-f0ab51cfbd94935f9cd5b009f673f292-dd783943a5322606-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-07-31 08:53:05.898 UTC | +8422 ms | CSS @font-face | 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=83bXgQy7",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/r/83bXgQy7/HCe7vW18/style.css",
"traceparent": "00-d0bf9e302e185359b16f69fd8f07cc90-933873de169f4a13-01",
"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-d0bf9e302e185359b16f69fd8f07cc90-9bc6a8b3f6e4aec6-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-07-31 08:53:05.946 UTC | +8470 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=83bXgQy7",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-d10faef49cc6d8115df51a2951690640-40ae03646779951a-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-d10faef49cc6d8115df51a2951690640-9eec1e843aad6d07-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-07-31 08:53:05.986 UTC | +8510 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=83bXgQy7",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-06cbe4f76a10c7b02f42aded80c1ff6e-c3a6c7e1a55e8804-01",
"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": "00-06cbe4f76a10c7b02f42aded80c1ff6e-b53fcfca1d9d5d1f-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-07-31 08:53:06.954 UTC | +9478 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=83bXgQy7",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-87e69bbad8db958df21c2c5c77f83154-33afd1698f84c7e6-01",
"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": "00-87e69bbad8db958df21c2c5c77f83154-cfcbf7887ba42420-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-07-31 08:53:09.526 UTC | +12050 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=83bXgQy7",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-05888c7468e7410c9db16082a9178b69-2a52182a75eca945-01",
"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": "00-05888c7468e7410c9db16082a9178b69-8b356f3a6134006c-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-08-02 19:04:42.940 UTC | +209505464 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": "00-0f1b422caf7a0edd5df3cf87184e4283-0e4f4f813f850161-01",
"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": "00-0f1b422caf7a0edd5df3cf87184e4283-819e6d1f93d68729-01",
"x-deno-userspace-tracestate": ""
}
|
||||
Client-side resource waterfall
JS executed (beacon hit) but no resource-timing payload was posted (UA may block sendBeacon/fetch or strip the body).