ua-tracer
by Paul Kinlan
ua-tracer
what does a user agent actually fetch, follow & run?
Trace KQFzaC1r
First seen: 2026-06-26 14:09:54.287 UTC
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot)
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 |
|---|---|---|---|---|
| 2026-06-26 14:09:54.287 UTC | +0 ms | homepage | GET | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot) |
request headers (7){
"accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
"accept-encoding": "gzip,identity",
"host": "uatracer.com",
"traceparent": "00-bd87b84c46b100b35b1ac32a732fc3d9-1bdc17c44b399025-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-26 14:20:05.861 UTC | +611574 ms | iframe document | GET | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot) |
request headers (12){
"accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US,en;q=0.90",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"sec-fetch-dest": "iframe",
"sec-fetch-mode": "navigate",
"sec-fetch-site": "same-origin",
"traceparent": "00-fb3d2028c7b88b74453d85808ac1ddf4-7e2033bad04671df-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-26 14:20:06.601 UTC | +612314 ms | Reporting API report (POST) | POST | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot) |
request headers (17){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US,en;q=0.90",
"cache-control": "max-age=0",
"content-length": "388",
"content-type": "application/csp-report",
"host": "uatracer.com",
"origin": "null",
"referer": "https://uatracer.com/",
"sec-fetch-dest": "empty",
"sec-fetch-mode": "no-cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-1933a960c1b732ede2cbe0ff6a25cb7d-9c7c7071e90aee1e-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-report-body": "{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"documentURL\":\"https://uatracer.com/\",\"disposition\":\"report\",\"referrer\":\"\",\"effectiveDirective\":\"style-src-elem\",\"blockedURL\":\"inline\",\"originalPolicy\":\"style-src 'self'; report-uri /r/KQFzaC1r/csp-report; report-to ua-tracer\",\"statusCode\":200,\"sample\":\"\",\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":9,\"columnNumber\":1}}"
}
|
||||
| 2026-06-26 14:20:07.731 UTC | +613444 ms | CSS | GET | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot) |
request headers (12){
"accept": "text/css,*/*;q=0.1",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US,en;q=0.90",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"sec-fetch-dest": "style",
"sec-fetch-mode": "no-cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-c4a1d4e63a214dbd95ada7f046a0f458-74e6167c4ed6bb02-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-26 14:20:08.867 UTC | +614580 ms | ES module | GET | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot) |
request headers (13){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US,en;q=0.90",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/",
"sec-fetch-dest": "script",
"sec-fetch-mode": "cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-eea079f6bafd0a65e2575600a21103b6-0d64e6da78cef99f-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-26 14:20:10.007 UTC | +615720 ms | JS | GET | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot) |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US,en;q=0.90",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"sec-fetch-dest": "script",
"sec-fetch-mode": "no-cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-92bb37f287058655bdc2bf67ca8ce41e-7c6dc40d1896344c-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-26 14:20:11.129 UTC | +616842 ms | CSS @import (nested stylesheet) | GET | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot) |
request headers (12){
"accept": "text/css,*/*;q=0.1",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US,en;q=0.90",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"sec-fetch-dest": "style",
"sec-fetch-mode": "no-cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-4f3eca0226a9ac912f35b127f0cdea6c-5de8b4d19f9db098-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-26 14:20:12.239 UTC | +617952 ms | Reporting API report (POST) | POST | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot) |
request headers (17){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US,en;q=0.90",
"cache-control": "max-age=0",
"content-length": "390",
"content-type": "application/csp-report",
"host": "uatracer.com",
"origin": "null",
"referer": "https://uatracer.com/",
"sec-fetch-dest": "empty",
"sec-fetch-mode": "no-cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-eccd3764015ea3dc26b01976b337c729-8bd599df08391263-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-report-body": "{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"documentURL\":\"https://uatracer.com/\",\"disposition\":\"report\",\"referrer\":\"\",\"effectiveDirective\":\"style-src-attr\",\"blockedURL\":\"inline\",\"originalPolicy\":\"style-src 'self'; report-uri /r/KQFzaC1r/csp-report; report-to ua-tracer\",\"statusCode\":200,\"sample\":\"\",\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":213,\"columnNumber\":1}}"
}
|
||||
| 2026-06-26 14:20:13.355 UTC | +619068 ms | Reporting API report (POST) | POST | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot) |
request headers (17){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US,en;q=0.90",
"cache-control": "max-age=0",
"content-length": "390",
"content-type": "application/csp-report",
"host": "uatracer.com",
"origin": "null",
"referer": "https://uatracer.com/",
"sec-fetch-dest": "empty",
"sec-fetch-mode": "no-cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-f56a1de8f0cd2e06e07598f85455c867-72790514bf6d3138-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-report-body": "{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"documentURL\":\"https://uatracer.com/\",\"disposition\":\"report\",\"referrer\":\"\",\"effectiveDirective\":\"style-src-attr\",\"blockedURL\":\"inline\",\"originalPolicy\":\"style-src 'self'; report-uri /r/KQFzaC1r/csp-report; report-to ua-tracer\",\"statusCode\":200,\"sample\":\"\",\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":721,\"columnNumber\":1}}"
}
|
||||
| 2026-06-26 14:20:14.477 UTC | +620190 ms | Reporting API report (POST) | POST | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot) |
request headers (17){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US,en;q=0.90",
"cache-control": "max-age=0",
"content-length": "412",
"content-type": "application/csp-report",
"host": "uatracer.com",
"origin": "null",
"referer": "https://uatracer.com/",
"sec-fetch-dest": "empty",
"sec-fetch-mode": "no-cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-bf8317a2c9b5a92759042cac46313720-b157bdfba8917354-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-report-body": "{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"documentURL\":\"https://uatracer.com/\",\"disposition\":\"report\",\"referrer\":\"\",\"effectiveDirective\":\"style-src-attr\",\"blockedURL\":\"inline\",\"originalPolicy\":\"style-src 'self'; report-uri /r/KQFzaC1r/csp-report; report-to ua-tracer\",\"statusCode\":200,\"sample\":\"\",\"sourceFile\":\"https://uatracer.com:443/r/KQFzaC1r/main.js\",\"lineNumber\":45,\"columnNumber\":23}}"
}
|
||||