ua-tracer
by Paul Kinlan
ua-tracer
what does a user agent actually fetch, follow & run?
Trace w0Ga0aKt
First seen: 2026-06-22 13:06:35.049 UTC
User-Agent: Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
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 |
|---|---|---|---|---|
| 2026-06-22 13:06:35.049 UTC | +0 ms | homepage | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
request headers (10){
"accept": "text/html,application/xhtml+xml,application/signed-exchange;v=b3,application/xml;q=0.9,*/*;q=0.8",
"accept-encoding": "gzip, deflate, br",
"amp-cache-transform": "google;v=\"1..8\"",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"traceparent": "00-688d6e77110e4d0c27fd7fc5d47a2da6-01429248c58ce48c-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-22 13:06:37.425 UTC | +2376 ms | prefetch | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
request headers (12){
"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",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"sec-purpose": "prefetch",
"traceparent": "00-a0c375e224d4faaa2a21e0ecde1f1838-7d4e9354de011ab9-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-22 13:06:37.673 UTC | +2624 ms | iframe document | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
request headers (12){
"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",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-2d0062e16db2e3912a48ff50d2819540-3bf50fe7cc7708b6-01",
"tracestate": "",
"upgrade-insecure-requests": "1",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-22 13:06:37.781 UTC | +2732 ms | CSS | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
request headers (13){
"accept": "text/css,*/*;q=0.1",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-dc0a3a442a4edd4f2217ae216eb7213b-9ae0c5ed92087fbe-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-dc0a3a442a4edd4f2217ae216eb7213b-07fc47047bd06638-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-06-22 13:06:37.886 UTC | +2837 ms | ES module | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
request headers (14){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-9ddaa97fad7910130b81d3b981768fb6-ac07d6d8f9e93fce-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-9ddaa97fad7910130b81d3b981768fb6-fff392094f6dda76-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-06-22 13:06:38.001 UTC | +2952 ms | JS | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
request headers (13){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-707e04df50f495d795f0baa8b9cacd5e-5ffae48910aa1f01-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-707e04df50f495d795f0baa8b9cacd5e-9e653bad5751c859-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-06-22 13:06:38.789 UTC | +3740 ms | CSS @import (nested stylesheet) | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
request headers (11){
"accept": "text/css,*/*;q=0.1",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/w0Ga0aKt/style.css",
"traceparent": "00-caaea301e5143a1652552e3dc7aff67b-9ec5388201c42c8f-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-22 13:06:39.301 UTC | +4252 ms | CSS | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
request headers (13){
"accept": "text/css,*/*;q=0.1",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-c0746df4c5e66e1590584bf1b00ef1dd-28e7f03b211350ed-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-c0746df4c5e66e1590584bf1b00ef1dd-68f1e5b4053c4094-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-06-22 13:06:39.369 UTC | +4320 ms | ES module | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
request headers (14){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-f6248aa11609200278ffffa620ea1f41-014d04421bfa3c53-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-f6248aa11609200278ffffa620ea1f41-8dcff7ff19d6f2c9-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-06-22 13:06:39.473 UTC | +4424 ms | JS | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
request headers (11){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-938590b30c3c15a1846ebec3d5776b69-9a77153ffb5ccadb-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-22 13:06:39.693 UTC | +4644 ms | prefetch | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
request headers (12){
"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",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"sec-purpose": "prefetch",
"traceparent": "00-e64d7519d587f02a18c98d6b298720f1-a450e813b72e63c1-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-22 13:06:39.781 UTC | +4732 ms | iframe document | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.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, deflate, br",
"accept-language": "en-US",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-0b439585807a533bd77f6ab5701de207-0482333198fe0e42-01",
"tracestate": "",
"upgrade-insecure-requests": "1",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-0b439585807a533bd77f6ab5701de207-2918e70e0e66ee7c-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-06-22 13:06:40.053 UTC | +5004 ms | CSS @import (nested stylesheet) | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
request headers (13){
"accept": "text/css,*/*;q=0.1",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/w0Ga0aKt/style.css",
"traceparent": "00-28f63b01162ecdfd3c8ec3487660bc79-1d9f6808cd22825e-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.7778.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-28f63b01162ecdfd3c8ec3487660bc79-165b10e8cf40e73c-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-06-22 13:06:42.877 UTC | +7828 ms | Twitter card image | GET | Googlebot-Image/1.0 |
request headers (11){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"traceparent": "00-a32e65ecece33f18e4e92d28b8c7a4d8-84ab0d5881a56316-01",
"tracestate": "",
"user-agent": "Googlebot-Image/1.0",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-a32e65ecece33f18e4e92d28b8c7a4d8-95dfbec27a36544c-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-06-22 13:06:43.046 UTC | +7997 ms | image | GET | Googlebot-Image/1.0 |
request headers (9){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"traceparent": "00-ee03fca33cf5c66a321d422f65eaaa13-811b79b2ff4e2536-01",
"tracestate": "",
"user-agent": "Googlebot-Image/1.0",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-06-22 13:06:43.161 UTC | +8112 ms | Open Graph image | GET | Googlebot-Image/1.0 |
request headers (11){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"traceparent": "00-0105833239deb799d18ba7b8c661cdd6-89a17e7bdb4832ea-01",
"tracestate": "",
"user-agent": "Googlebot-Image/1.0",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-0105833239deb799d18ba7b8c661cdd6-3e5f02e2e1fea12d-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-06-22 13:06:44.245 UTC | +9196 ms | favicon | GET | Googlebot-Image/1.0 |
request headers (11){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"traceparent": "00-42bc4c1f158f1a06b5b9b728345b0c7f-9ca6d6188a67d667-01",
"tracestate": "",
"user-agent": "Googlebot-Image/1.0",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-42bc4c1f158f1a06b5b9b728345b0c7f-90133634f3c57ac8-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-06-22 13:06:49.357 UTC | +14308 ms | favicon | GET | Googlebot-Image/1.0 |
request headers (11){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"traceparent": "00-02d511d5dfde3643b99ec51cadde66f9-786d06812ea0f2f7-01",
"tracestate": "",
"user-agent": "Googlebot-Image/1.0",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-02d511d5dfde3643b99ec51cadde66f9-2c4d1b53bb5216a1-01",
"x-deno-userspace-tracestate": ""
}
|
||||