Examine source code of Bob DHL Scanner

{
  "manifest_version": 2,
  "name": "DHL Scanner",
  "version": "1.3",
  "description": "Popup ritselectie binnen DHL Scanner.",
  "browser_specific_settings": {
    "gecko": {
      "id": "scanner@bobbomers.nl",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "browsingActivity"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "tabs",
    "storage",
    "cookies",
    "https://cityhub-scan.dhlparcel.nl/*",
    "http://localhost:5000/*",
    "https://api.bobbomers.nl/*",
    "https://serverapi.bobbomers.nl/*",
    "https://analytics.bobbomers.nl/*",
    "http://api.bobbomers.nl/*",
    "http://serverapi.bobbomers.nl/*",
    "http://analytics.bobbomers.nl/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://cityhub-scan.dhlparcel.nl/*"
      ],
      "js": [
        "view/scanner.js"
      ],
      "css": [
        "view/popup_pnummer.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "view/popup_pnummer.html",
    "icons/icon.png"
  ],
  "icons": {
    "16": "icons/icon.png",
    "32": "icons/icon.png",
    "48": "icons/icon.png",
    "128": "icons/icon.png"
  }
}