{
  "title": "Request timing: link, eager image and lazy image",
  "recordedAt": "2026-10-28T23:06:35+08:00",
  "environment": {
    "os": "Windows 10",
    "browser": "Chrome 156",
    "protocol": "HTTP on loopback",
    "distinctOrigins": true,
    "originDifference": "two local ports",
    "referrerPolicy": "strict-origin-when-cross-origin",
    "cacheControl": "no-store",
    "javascriptRequiredByFixture": false,
    "imageSize": [
      320,
      180
    ],
    "lazyImageOffsetPixels": 12000
  },
  "scope": "Controlled pages and a non-sensitive geometric SVG. No external adult service or real viewer traffic was measured. A request is not proof of profiling or identification.",
  "trials": [
    {
      "condition": "link",
      "trial": 1,
      "requestsBeforeAction": 0,
      "requestsAfterAction": 1,
      "action": "click link"
    },
    {
      "condition": "link",
      "trial": 2,
      "requestsBeforeAction": 0,
      "requestsAfterAction": 1,
      "action": "click link"
    },
    {
      "condition": "link",
      "trial": 3,
      "requestsBeforeAction": 0,
      "requestsAfterAction": 1,
      "action": "click link"
    },
    {
      "condition": "eager",
      "trial": 1,
      "requestsBeforeAction": 1,
      "requestsAfterAction": 1,
      "action": "none"
    },
    {
      "condition": "eager",
      "trial": 2,
      "requestsBeforeAction": 1,
      "requestsAfterAction": 1,
      "action": "none"
    },
    {
      "condition": "eager",
      "trial": 3,
      "requestsBeforeAction": 1,
      "requestsAfterAction": 1,
      "action": "none"
    },
    {
      "condition": "lazy",
      "trial": 1,
      "requestsBeforeAction": 0,
      "requestsAfterAction": 1,
      "action": "scroll to image"
    },
    {
      "condition": "lazy",
      "trial": 2,
      "requestsBeforeAction": 0,
      "requestsAfterAction": 1,
      "action": "scroll to image"
    },
    {
      "condition": "lazy",
      "trial": 3,
      "requestsBeforeAction": 0,
      "requestsAfterAction": 1,
      "action": "scroll to image"
    }
  ],
  "requestEvidence": [
    {
      "condition": "eager",
      "trial": 1,
      "resourceType": "image",
      "method": "GET",
      "receivedOriginOnly": true,
      "receivedPagePath": false,
      "receivedPageQuery": false,
      "observedAtUnixSeconds": 1793199893.7449133
    },
    {
      "condition": "eager",
      "trial": 2,
      "resourceType": "image",
      "method": "GET",
      "receivedOriginOnly": true,
      "receivedPagePath": false,
      "receivedPageQuery": false,
      "observedAtUnixSeconds": 1793199893.9804432
    },
    {
      "condition": "eager",
      "trial": 3,
      "resourceType": "image",
      "method": "GET",
      "receivedOriginOnly": true,
      "receivedPagePath": false,
      "receivedPageQuery": false,
      "observedAtUnixSeconds": 1793199894.2325087
    },
    {
      "condition": "link",
      "trial": 1,
      "resourceType": "document",
      "method": "GET",
      "receivedOriginOnly": true,
      "receivedPagePath": false,
      "receivedPageQuery": false,
      "observedAtUnixSeconds": 1793199910.452676
    },
    {
      "condition": "link",
      "trial": 2,
      "resourceType": "document",
      "method": "GET",
      "receivedOriginOnly": true,
      "receivedPagePath": false,
      "receivedPageQuery": false,
      "observedAtUnixSeconds": 1793199910.9280562
    },
    {
      "condition": "link",
      "trial": 3,
      "resourceType": "document",
      "method": "GET",
      "receivedOriginOnly": true,
      "receivedPagePath": false,
      "receivedPageQuery": false,
      "observedAtUnixSeconds": 1793199911.4050355
    },
    {
      "condition": "lazy",
      "trial": 3,
      "resourceType": "image",
      "method": "GET",
      "receivedOriginOnly": true,
      "receivedPagePath": false,
      "receivedPageQuery": false,
      "observedAtUnixSeconds": 1793199912.9513721
    },
    {
      "condition": "lazy",
      "trial": 1,
      "resourceType": "image",
      "method": "GET",
      "receivedOriginOnly": true,
      "receivedPagePath": false,
      "receivedPageQuery": false,
      "observedAtUnixSeconds": 1793199941.357869
    },
    {
      "condition": "lazy",
      "trial": 2,
      "resourceType": "image",
      "method": "GET",
      "receivedOriginOnly": true,
      "receivedPagePath": false,
      "receivedPageQuery": false,
      "observedAtUnixSeconds": 1793199941.8098824
    }
  ],
  "limitations": [
    "Only desktop Chrome was tested.",
    "Same host with different ports; this does not measure third-party cookie behavior.",
    "No claim about mobile, private mode, extensions or other sites.",
    "Lazy-load threshold is browser-dependent; 12000 px is the test placement, not a browser threshold.",
    "External requests from browser extensions were not counted; only the controlled destination server was observed."
  ]
}