Examine source code of WhatStack: Tech Stack Scanner

{
  "manifest_version": 3,
  "name": "WhatStack: Website Tech Stack Scan & Detector",
  "short_name": "WhatStack",
  "version": "1.0.1",
  "description": "Perform a deep Stack Scan on any website. Instantly detect frameworks, CMS, analytics, and hosting technologies.",
  "default_locale": "en",
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "tabs",
    "webRequest"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "StackSnap — Detect Tech Stack"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "whatstack@brilworks.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "background": {
    "service_worker": "background/service-worker.js",
    "scripts": [
      "background/service-worker.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "data/signatures.js",
        "content/detector.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  }
}