ua-tracer
by Paul Kinlan
ua-tracer
what does a user agent actually fetch, follow & run?
Trace gKk0Wptl
First seen: 2026-06-25 06:50:55.151 UTC
User-Agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36
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 |
|---|---|---|---|---|
| 2026-06-25 06:50:55.151 UTC | +0 ms | homepage | GET | Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36 |
request headers (17){
"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-GB,en-US;q=0.9,en;q=0.8,cy;q=0.7,ja;q=0.6",
"host": "uatracer.com",
"priority": "u=0, i",
"sec-ch-ua": "\"Not;A=Brand\";v=\"8\", \"Chromium\";v=\"150\", \"Google Chrome\";v=\"150\"",
"sec-ch-ua-mobile": "?1",
"sec-ch-ua-platform": "\"Android\"",
"sec-fetch-dest": "document",
"sec-fetch-mode": "navigate",
"sec-fetch-site": "none",
"sec-fetch-user": "?1",
"traceparent": "00-1e12f9f1483292bb49d2b21d1bcfeecf-02ae1f9e61191ef4-01",
"tracestate": "",
"upgrade-insecure-requests": "1",
"user-agent": "Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36",
"via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-25 06:50:55.792 UTC | +641 ms | CSS | GET | Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36 |
request headers (16){
"accept": "text/css,*/*;q=0.1",
"accept-encoding": "gzip, deflate, br, zstd",
"accept-language": "en-GB,en-US;q=0.9,en;q=0.8,cy;q=0.7,ja;q=0.6",
"host": "uatracer.com",
"priority": "u=0",
"referer": "https://uatracer.com/",
"sec-ch-ua": "\"Not;A=Brand\";v=\"8\", \"Chromium\";v=\"150\", \"Google Chrome\";v=\"150\"",
"sec-ch-ua-mobile": "?1",
"sec-ch-ua-platform": "\"Android\"",
"sec-fetch-dest": "style",
"sec-fetch-mode": "no-cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-4c675e1fe98edba058766546794949f5-808d61df34c4e2b5-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36",
"via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-25 06:50:55.807 UTC | +656 ms | font (HTML) | GET | Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36 |
request headers (17){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br, zstd",
"accept-language": "en-GB,en-US;q=0.9,en;q=0.8,cy;q=0.7,ja;q=0.6",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"priority": "u=1",
"referer": "https://uatracer.com/",
"sec-ch-ua": "\"Not;A=Brand\";v=\"8\", \"Chromium\";v=\"150\", \"Google Chrome\";v=\"150\"",
"sec-ch-ua-mobile": "?1",
"sec-ch-ua-platform": "\"Android\"",
"sec-fetch-dest": "font",
"sec-fetch-mode": "cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-ca0d761dd8bc1c64af0b2fe60ca9ae0c-d0cbee7323fef898-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36",
"via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-25 06:50:55.807 UTC | +656 ms | preload (image) | GET | Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36 |
request headers (16){
"accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
"accept-encoding": "gzip, deflate, br, zstd",
"accept-language": "en-GB,en-US;q=0.9,en;q=0.8,cy;q=0.7,ja;q=0.6",
"host": "uatracer.com",
"priority": "i",
"referer": "https://uatracer.com/",
"sec-ch-ua": "\"Not;A=Brand\";v=\"8\", \"Chromium\";v=\"150\", \"Google Chrome\";v=\"150\"",
"sec-ch-ua-mobile": "?1",
"sec-ch-ua-platform": "\"Android\"",
"sec-fetch-dest": "image",
"sec-fetch-mode": "no-cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-c93761926368af460122fbaff6bed074-dd0361df9e5692eb-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36",
"via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-25 06:50:55.809 UTC | +658 ms | prefetch | GET | Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36 |
request headers (17){
"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-GB,en-US;q=0.9,en;q=0.8,cy;q=0.7,ja;q=0.6",
"host": "uatracer.com",
"priority": "u=4, i",
"referer": "https://uatracer.com/",
"sec-ch-ua": "\"Not;A=Brand\";v=\"8\", \"Chromium\";v=\"150\", \"Google Chrome\";v=\"150\"",
"sec-ch-ua-mobile": "?1",
"sec-ch-ua-platform": "\"Android\"",
"sec-fetch-dest": "empty",
"sec-fetch-mode": "no-cors",
"sec-fetch-site": "same-origin",
"sec-purpose": "prefetch",
"traceparent": "00-7c71968bb40f08c961af3711f713cb61-4820af7823234584-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36",
"via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-25 06:50:55.965 UTC | +814 ms | image | GET | Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36 |
request headers (16){
"accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
"accept-encoding": "gzip, deflate, br, zstd",
"accept-language": "en-GB,en-US;q=0.9,en;q=0.8,cy;q=0.7,ja;q=0.6",
"host": "uatracer.com",
"priority": "i",
"referer": "https://uatracer.com/",
"sec-ch-ua": "\"Not;A=Brand\";v=\"8\", \"Chromium\";v=\"150\", \"Google Chrome\";v=\"150\"",
"sec-ch-ua-mobile": "?1",
"sec-ch-ua-platform": "\"Android\"",
"sec-fetch-dest": "image",
"sec-fetch-mode": "no-cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-090f5679e0b92e77eea4ccfa9b827737-987fa5892c43ec9e-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36",
"via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-25 06:50:55.999 UTC | +848 ms | JS | GET | Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36 |
request headers (16){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br, zstd",
"accept-language": "en-GB,en-US;q=0.9,en;q=0.8,cy;q=0.7,ja;q=0.6",
"host": "uatracer.com",
"priority": "u=1",
"referer": "https://uatracer.com/",
"sec-ch-ua": "\"Not;A=Brand\";v=\"8\", \"Chromium\";v=\"150\", \"Google Chrome\";v=\"150\"",
"sec-ch-ua-mobile": "?1",
"sec-ch-ua-platform": "\"Android\"",
"sec-fetch-dest": "script",
"sec-fetch-mode": "no-cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-26869378196e8f6324abdf86b761f8ba-d4cfe095d98e042e-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36",
"via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-25 06:50:56.009 UTC | +858 ms | ES module | GET | Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36 |
request headers (17){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br, zstd",
"accept-language": "en-GB,en-US;q=0.9,en;q=0.8,cy;q=0.7,ja;q=0.6",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"priority": "u=1",
"referer": "https://uatracer.com/",
"sec-ch-ua": "\"Not;A=Brand\";v=\"8\", \"Chromium\";v=\"150\", \"Google Chrome\";v=\"150\"",
"sec-ch-ua-mobile": "?1",
"sec-ch-ua-platform": "\"Android\"",
"sec-fetch-dest": "script",
"sec-fetch-mode": "cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-dd86454eb9127fada247f9fdc8542fac-50f02e500837b351-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36",
"via": "HTTP/2 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-25 06:50:57.709 UTC | +2558 ms | Reporting API report (POST) | POST | Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36 |
request headers (12){
"accept-encoding": "gzip, deflate, br, zstd",
"accept-language": "en-GB,en-US;q=0.9,en;q=0.8,cy;q=0.7,ja;q=0.6",
"content-length": "1535",
"content-type": "application/reports+json",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"priority": "u=4, i",
"traceparent": "00-0cb4626782d48293523e82422f1f9695-ed34f1267367647c-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36",
"via": "HTTP/2 ams.vultr.prod.deno-cluster.net",
"x-report-body": "[{\"age\":1732,\"body\":{\"blockedURL\":\"inline\",\"disposition\":\"report\",\"documentURL\":\"https://uatracer.com/\",\"effectiveDirective\":\"style-src-attr\",\"lineNumber\":721,\"originalPolicy\":\"style-src 'self'; report-uri /r/gKk0Wptl/csp-report; report-to ua-tracer\",\"referrer\":\"\",\"sample\":\"\",\"sourceFile\":\"https://uatracer.com/\",\"statusCode\":200},\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"user_agent\":\"Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36\"},{\"age\":1797,\"body\":{\"blockedURL\":\"inline\",\"disposition\":\"report\",\"documentURL\":\"https://uatracer.com/\",\"effectiveDirective\":\"style-src-attr\",\"lineNumber\":213,\"originalPolicy\":\"style-src 'self'; report-uri /r/gKk0Wptl/csp-report; report-to ua-tracer\",\"referrer\":\"\",\"sample\":\"\",\"sourceFile\":\"https://uatracer.com/\",\"statusCode\":200},\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"user_agent\":\"Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36\"},{\"age\":1797,\"body\":{\"blockedURL\":\"inline\",\"disposition\":\"report\",\"documentURL\":\"https://uatracer.com/\",\"effectiveDirective\":\"style-src-elem\",\"lineNumber\":9,\"originalPolicy\":\"style-src 'self'; report-uri /r/gKk0Wptl/csp-report; report-to ua-tracer\",\"referrer\":\"\",\"sample\":\"\",\"sourceFile\":\"https://uatracer.com/\",\"statusCode\":200},\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"user_agent\":\"Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36\"}]"
}
|
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