ua-tracer by Paul Kinlan

trace 990xMVse

ua-tracer

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

← all traces

Trace 990xMVse

First seen: 2026-10-11 05:56:55.406 UTC
User-Agent: YisouSpider
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
2026-10-11 05:56:55.406 UTC +0 ms homepage GET YisouSpider
request headers (18) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "accept-language": "zh-CN,zh-TW;q=0.9,zh;q=0.8,en;q=0.7",
  "connection": "Keep-Alive",
  "host": "uatracer.com",
  "interceptor": "9",
  "screenwidth": "1200",
  "shenma-host": "uatracer.com",
  "shenma-ip": "69.67.170.170",
  "thumbhight": "512",
  "thumbquality": "60",
  "thumbwidth": "512",
  "traceparent": "00-12282cb37a5c214348b389f81e6258ca-a1b31eee405e10d1-01",
  "tracestate": "",
  "user-agent": "YisouSpider",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-12282cb37a5c214348b389f81e6258ca-8ca40095e6bdc6e3-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-11 05:56:56.950 UTC +1544 ms prefetch GET YisouSpider
request headers (16) 
{
  "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,deflate,br",
  "accept-language": "en-US,en;q=0.9",
  "connection": "close",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"Not(A:Brand\";v=\"99\", \"HeadlessChrome\";v=\"133\", \"Chromium\";v=\"133\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Windows\"",
  "traceparent": "00-e12740867f46ab8cda2dbe51182076f4-c1ab6fdd184838e5-01",
  "tracestate": "",
  "user-agent": "YisouSpider",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-e12740867f46ab8cda2dbe51182076f4-0ab2a6be94490dde-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-11 05:56:56.966 UTC +1560 ms font (HTML) GET YisouSpider
request headers (17) 
{
  "accept": "*/*",
  "accept-encoding": "gzip,deflate,br",
  "accept-language": "en-US,en;q=0.9",
  "connection": "close",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"Not(A:Brand\";v=\"99\", \"HeadlessChrome\";v=\"133\", \"Chromium\";v=\"133\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Windows\"",
  "traceparent": "00-bc598743254da1c9064fa761ecbcd81c-81206bcaabc38080-01",
  "tracestate": "",
  "user-agent": "YisouSpider",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-bc598743254da1c9064fa761ecbcd81c-758fc8cb8ca20bc7-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-11 05:56:56.982 UTC +1576 ms JS GET YisouSpider
request headers (16) 
{
  "accept": "*/*",
  "accept-encoding": "gzip,deflate,br",
  "accept-language": "en-US,en;q=0.9",
  "connection": "close",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"Not(A:Brand\";v=\"99\", \"HeadlessChrome\";v=\"133\", \"Chromium\";v=\"133\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Windows\"",
  "traceparent": "00-82744bddd67ceef0af07f0ff69575774-1d3b64ce04d7d24c-01",
  "tracestate": "",
  "user-agent": "YisouSpider",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-82744bddd67ceef0af07f0ff69575774-7438b170284ac255-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-11 05:56:57.218 UTC +1812 ms CSS GET YisouSpider
request headers (16) 
{
  "accept": "text/css,*/*;q=0.1",
  "accept-encoding": "gzip,deflate,br",
  "accept-language": "en-US,en;q=0.9",
  "connection": "close",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"Not(A:Brand\";v=\"99\", \"HeadlessChrome\";v=\"133\", \"Chromium\";v=\"133\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Windows\"",
  "traceparent": "00-cfb8912d694a33b331853a03e0dc3cb8-9b268be3dad40526-01",
  "tracestate": "",
  "user-agent": "YisouSpider",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-cfb8912d694a33b331853a03e0dc3cb8-55259a068c7b5af4-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-11 05:56:57.249 UTC +1843 ms iframe document GET YisouSpider
request headers (22) 
{
  "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, deflate, br, zstd",
  "accept-language": "en-US",
  "cache-control": "no-cache",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "pragma": "no-cache",
  "priority": "u=0, i",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"Not(A:Brand\";v=\"99\", \"HeadlessChrome\";v=\"133\", \"Chromium\";v=\"133\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Windows\"",
  "sec-fetch-dest": "iframe",
  "sec-fetch-mode": "navigate",
  "sec-fetch-site": "same-origin",
  "traceparent": "00-57b58791ab7b6c2253b2b93eb2a50a63-dc04c4c3ec4990e1-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "YisouSpider",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-57b58791ab7b6c2253b2b93eb2a50a63-8c5906e3560986ff-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-11 05:56:58.046 UTC +2640 ms CSS @import (nested stylesheet) GET YisouSpider
request headers (16) 
{
  "accept": "text/css,*/*;q=0.1",
  "accept-encoding": "gzip,deflate,br",
  "accept-language": "en-US,en;q=0.9",
  "connection": "close",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/r/990xMVse/54DuF4mM/style.css",
  "sec-ch-ua": "\"Not(A:Brand\";v=\"99\", \"HeadlessChrome\";v=\"133\", \"Chromium\";v=\"133\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Windows\"",
  "traceparent": "00-4b34355289295325f02ba717ff4e4ae5-ebb0e0f17db175fc-01",
  "tracestate": "",
  "user-agent": "YisouSpider",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-4b34355289295325f02ba717ff4e4ae5-43cb07e68a43ea2d-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-11 05:56:59.478 UTC +4072 ms CSP violation report (POST) POST YisouSpider
request headers (20) 
{
  "accept": "*/*",
  "accept-encoding": "gzip,deflate,br",
  "accept-language": "en-US,en;q=0.9",
  "connection": "close",
  "content-length": "293",
  "content-type": "application/json",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"Not(A:Brand\";v=\"99\", \"HeadlessChrome\";v=\"133\", \"Chromium\";v=\"133\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Windows\"",
  "traceparent": "00-883fbb2b8da4963c34f4a4da86b87aea-afc398f8b3dc721f-01",
  "tracestate": "",
  "user-agent": "YisouSpider",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-883fbb2b8da4963c34f4a4da86b87aea-4b72dc02aa87abe9-01",
  "x-deno-userspace-tracestate": "",
  "x-report-body": "{\"source\":\"securitypolicyviolation\",\"violatedDirective\":\"style-src-attr\",\"effectiveDirective\":\"style-src-attr\",\"blockedURI\":\"inline\",\"documentURI\":\"https://uatracer.com/\",\"disposition\":\"report\",\"lineNumber\":45,\"sourceFile\":\"https://uatracer.com/r/990xMVse/54DuF4mM/main.js\",\"ua\":\"YisouSpider\"}"
}
2026-10-11 05:56:59.526 UTC +4120 ms CSP violation report (POST) POST YisouSpider
request headers (18) 
{
  "accept": "*/*",
  "accept-encoding": "gzip,deflate,br",
  "accept-language": "en-US,en;q=0.9",
  "connection": "close",
  "content-length": "294",
  "content-type": "application/json",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"Not(A:Brand\";v=\"99\", \"HeadlessChrome\";v=\"133\", \"Chromium\";v=\"133\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Windows\"",
  "traceparent": "00-9cfae014e168398a881e7bdf5d232fb5-de8a52b30c06bdbd-01",
  "tracestate": "",
  "user-agent": "YisouSpider",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-report-body": "{\"source\":\"securitypolicyviolation\",\"violatedDirective\":\"style-src-attr\",\"effectiveDirective\":\"style-src-attr\",\"blockedURI\":\"inline\",\"documentURI\":\"https://uatracer.com/\",\"disposition\":\"enforce\",\"lineNumber\":45,\"sourceFile\":\"https://uatracer.com/r/990xMVse/54DuF4mM/main.js\",\"ua\":\"YisouSpider\"}"
}
2026-10-11 05:56:59.831 UTC +4425 ms ES module GET YisouSpider
request headers (17) 
{
  "accept": "*/*",
  "accept-encoding": "gzip,deflate,br",
  "accept-language": "en-US,en;q=0.9",
  "connection": "close",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"Not(A:Brand\";v=\"99\", \"HeadlessChrome\";v=\"133\", \"Chromium\";v=\"133\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Windows\"",
  "traceparent": "00-a2c39a45560085c1f518c2a3169936c6-6ca261ed52540a2f-01",
  "tracestate": "",
  "user-agent": "YisouSpider",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-a2c39a45560085c1f518c2a3169936c6-4d6f27fc3481b23d-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-11 05:57:01.114 UTC +5708 ms Reporting API report (POST) POST YisouSpider
request headers (20) 
{
  "accept": "*/*",
  "accept-encoding": "gzip,deflate,br",
  "accept-language": "en-US,en;q=0.9",
  "connection": "close",
  "content-length": "3906",
  "content-type": "application/json",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"Not(A:Brand\";v=\"99\", \"HeadlessChrome\";v=\"133\", \"Chromium\";v=\"133\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Windows\"",
  "traceparent": "00-feec8bdf550c72c877fde09ef77fa115-f343cd06d3b909d2-01",
  "tracestate": "",
  "user-agent": "YisouSpider",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-feec8bdf550c72c877fde09ef77fa115-9a994b86399d0518-01",
  "x-deno-userspace-tracestate": "",
  "x-report-body": "{\"source\":\"ReportingObserver\",\"reports\":[{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":9,\"columnNumber\":0,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-elem\",\"originalPolicy\":\"default-src 'self'; img-src 'self' data\",\"sample\":\"\",\"disposition\":\"enforce\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":9,\"columnNumber\":0,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-elem\",\"originalPolicy\":\"style-src 'self'; report-uri /r/990xMVse/54DuF4mM/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":243,\"columnNumber\":0,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"default-src 'self'; img-src 'self' data\",\"sample\":\"\",\"disposition\":\"enforce\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":243,\"columnNumber\":0,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"style-src 'self'; report-uri /r/990xMVse/54DuF4mM/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":247,\"columnNumber\":0,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"default-src 'self'; img-src 'self' data\",\"sample\":\"\",\"disposition\":\"enforce\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":247,\"columnNumber\":0,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"style-src 'self'; report-uri /r/990xMVse/54DuF4mM/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":755,\"columnNumber\":0,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"default-src 'self'; img-src 'self' data\",\"sample\":\"\",\"disposition\":\"enforce\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":755,\"columnNumber\":0,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"style-src 'self'; report-uri /r/990xMVse/54DuF4mM/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/r/990xMVse/54DuF4mM/main.js\",\"lineNumber\":45,\"columnNumber\":11,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"default-src 'self'; img-src 'self' data\",\"sample\":\"\",\"disposition\":\"enforce\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/r/990xMVse/54DuF4mM/main.js\",\"lineNumber\":45,\"columnNumber\":11,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"style-src 'self'; report-uri /r/990xMVse/54DuF4mM/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}}],\"ua\":\"YisouSpider\"}"
}
2026-10-11 05:57:20.318 UTC +24912 ms client timing POST POST YisouSpider
request headers (19) 
{
  "accept": "*/*",
  "accept-encoding": "gzip,deflate,br",
  "accept-language": "en-US,en;q=0.9",
  "connection": "close",
  "content-length": "2684",
  "content-type": "application/json",
  "cookie": "[redacted]",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "sec-ch-ua": "\"Not(A:Brand\";v=\"99\", \"HeadlessChrome\";v=\"133\", \"Chromium\";v=\"133\"",
  "sec-ch-ua-mobile": "?0",
  "sec-ch-ua-platform": "\"Windows\"",
  "traceparent": "00-d4a613e4d8ab9d540e895362896f6624-b4fb9cbcada0c39f-01",
  "tracestate": "",
  "user-agent": "YisouSpider",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-d4a613e4d8ab9d540e895362896f6624-f9ad2e07b656983e-01",
  "x-deno-userspace-tracestate": ""
}

Client-side resource waterfall

Reported by performance.getEntriesByType('resource') after JS ran in the UA. This proves a real browser-grade engine, not just a downloader.

ResourceInitiatorStartDurationTimeline
style.css link 10ms 1061ms
font.woff2 link 10ms 1429ms
preload.png link 10ms 6576ms
photo.png img 10ms 7377ms
main.js script 10ms 822ms
module.js script 10ms 3694ms
prefetch.png link 19ms 782ms
iframe iframe 21ms 1121ms
import.css css 1072ms 1485ms
css-bg.png css 2559ms 7073ms
css-font.woff2 css 2559ms 20105ms
js-ran.gif?t=1791698218886 img 2575ms 7058ms
csp-report beacon 2577ms 848ms
csp-report beacon 2578ms 1360ms
report beacon 2578ms 2396ms
module-ran.gif?t=1791698220018 img 3706ms 68ms