ua-tracer
by Paul Kinlan
trace EEstfHyA
what does a user agent actually fetch, follow & run?
Trace EEstfHyA
First seen: 2026-09-21 15:57:41.617 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.
| Received | Δ | Kind | Method | User-Agent |
|---|---|---|---|---|
| 2026-09-21 15:57:41.617 UTC | +0 ms | homepage | GET | Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html) |
request headers (10){
"accept": "*/*",
"accept-encoding": "gzip",
"accept-language": "zh-cn,zh-tw",
"host": "uatracer.com",
"traceparent": "00-3f7a2302016c604ed039e61b666f6dbe-9b2b7b6b84f9fb77-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/2 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-3f7a2302016c604ed039e61b666f6dbe-00aaad032e3cbd98-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 15:57:50.428 UTC | +8811 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=EEstfHyA",
"host": "uatracer.com",
"referer": "https://uatracer.com/?ref=tiny-helpers/",
"traceparent": "00-70a768736fc422edcb508f63845dff66-970699f2c49fcffc-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": "00-70a768736fc422edcb508f63845dff66-6a13cd151022e4c8-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 15:57:50.484 UTC | +8867 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=EEstfHyA",
"host": "uatracer.com",
"referer": "https://uatracer.com/?ref=tiny-helpers/",
"traceparent": "00-6f0b380eee4f6ba8b95e7faba18c1534-220f95c6e026a95e-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": "00-6f0b380eee4f6ba8b95e7faba18c1534-2791f750fba1af89-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 15:57:50.495 UTC | +8878 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=EEstfHyA",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/?ref=tiny-helpers/",
"traceparent": "00-05c1b6007d5b7a36504ea16ffacd2d08-d064ac5b797a89d9-01",
"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": "00-05c1b6007d5b7a36504ea16ffacd2d08-9f2d6819eba8988a-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 15:57:50.507 UTC | +8890 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=EEstfHyA",
"host": "uatracer.com",
"referer": "https://uatracer.com/?ref=tiny-helpers/",
"traceparent": "00-9b893bd886c77ffb4cea9054a2123e51-b123cc5bf3f46297-01",
"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": "00-9b893bd886c77ffb4cea9054a2123e51-3940561485629c77-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 15:57:50.519 UTC | +8902 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=EEstfHyA",
"host": "uatracer.com",
"referer": "https://uatracer.com/?ref=tiny-helpers/",
"traceparent": "00-5dbe682603fe78a9327206c82edf7e89-208e5c2667d605e9-01",
"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": "00-5dbe682603fe78a9327206c82edf7e89-12826c7ead831491-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 15:57:50.527 UTC | +8910 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=EEstfHyA",
"host": "uatracer.com",
"referer": "https://uatracer.com/?ref=tiny-helpers/",
"traceparent": "00-6c3b19ae759cecbfb50162d139ddc355-0a5365f405da4b8f-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": "00-6c3b19ae759cecbfb50162d139ddc355-929e3fcba1f38aa9-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 15:57:50.543 UTC | +8926 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=EEstfHyA",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/?ref=tiny-helpers/",
"traceparent": "00-0af7487afe2f4482dca466957966a9fc-a321e89368cef725-01",
"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": "00-0af7487afe2f4482dca466957966a9fc-1f07d9f721c96330-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 15:57:50.550 UTC | +8933 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=EEstfHyA",
"host": "uatracer.com",
"referer": "https://uatracer.com/?ref=tiny-helpers/",
"traceparent": "00-563690ba1d1fc68ee556391513a81eaa-8be9df7311226ccf-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": "00-563690ba1d1fc68ee556391513a81eaa-22731823924b349d-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 15:57:53.415 UTC | +11798 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=EEstfHyA",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/EEstfHyA/ebX0xbQ9/style.css",
"traceparent": "00-eb3d1b85d52e82532604bb6590e66405-8ccb8d9ad4bc48b4-01",
"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-eb3d1b85d52e82532604bb6590e66405-fe530eac5be4d8bb-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 15:57:54.367 UTC | +12750 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=EEstfHyA",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/EEstfHyA/ebX0xbQ9/iframe",
"traceparent": "00-74a48301c923c7613ce816f1092ceca6-4343a21613c9c954-01",
"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": "00-74a48301c923c7613ce816f1092ceca6-c909be035cffc6b0-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 15:57:54.683 UTC | +13066 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=EEstfHyA",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/EEstfHyA/ebX0xbQ9/style.css",
"traceparent": "00-9ac8155208caa7dcc9dbf3eda1276235-d58b3767903203bb-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": "00-9ac8155208caa7dcc9dbf3eda1276235-a91be3561c0184e3-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 15:57:54.694 UTC | +13077 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=EEstfHyA",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/r/EEstfHyA/ebX0xbQ9/style.css",
"traceparent": "00-68cf0ca9dfe18910fda8d1b2bd654aa4-e1cd6de7886d207d-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": "00-68cf0ca9dfe18910fda8d1b2bd654aa4-ebcfae649f97713a-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 15:57:54.731 UTC | +13114 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=EEstfHyA",
"host": "uatracer.com",
"referer": "https://uatracer.com/?ref=tiny-helpers/",
"traceparent": "00-e4b856e3c4246bc5a3988dcbe3382ae5-ed31ab606a59cfcd-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-e4b856e3c4246bc5a3988dcbe3382ae5-e0a7a5b790fc9b51-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 15:57:54.743 UTC | +13126 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=EEstfHyA",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/?ref=tiny-helpers/",
"traceparent": "00-f14219b7c9d72f3de4d3767d4a25e16a-511b0f5d01119320-01",
"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-f14219b7c9d72f3de4d3767d4a25e16a-023c84e79de10e3d-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 15:57:54.779 UTC | +13162 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=EEstfHyA",
"host": "uatracer.com",
"referer": "https://uatracer.com/?ref=tiny-helpers/",
"traceparent": "00-e3e296597237047738da249bcc72f177-87366a6a7c40f71b-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-e3e296597237047738da249bcc72f177-ac3f3416bcdf8630-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 15:57:54.815 UTC | +13198 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=EEstfHyA",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/?ref=tiny-helpers/",
"traceparent": "00-2ed25e62603803c1a33c2b2424f85e89-45a9b15efa8af7e2-01",
"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": "00-2ed25e62603803c1a33c2b2424f85e89-86022aed3ff3f923-01",
"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).