ua-tracer by Paul Kinlan

ua-tracer

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

← all traces

Trace PvW4dF2z

First seen: 2026-07-02 18:55:20.426 UTC
User-Agent: LivelapBot/0.2 (http://site.livelap.com/crawler)
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
2026-07-02 18:55:20.426 UTC +0 ms homepage GET LivelapBot/0.2 (http://site.livelap.com/crawler)
request headers (12) 
{
  "accept": "text/html,application/xhtml+xml",
  "accept-encoding": "gzip",
  "accept-language": "en-US,en",
  "connection": "close",
  "content-length": "0",
  "cookie": "",
  "host": "uatracer.com",
  "referer": "https://uatracer.com",
  "traceparent": "00-6d2ddacdf052300a41cb3e50593fa86c-e9fed884e2ca8638-01",
  "tracestate": "",
  "user-agent": "LivelapBot/0.2 (http://site.livelap.com/crawler)",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
2026-07-02 18:55:23.829 UTC +3403 ms Open Graph image GET Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
request headers (7) 
{
  "accept": "*/*",
  "connection": "close",
  "host": "uatracer.com",
  "traceparent": "00-91fae3158fe2f8c20355cdbb43021264-a6d1ac6ce210f2bc-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}