Examine source code of Qroole - QR Code Reader

{
  "manifest_version": 2,
  "default_locale": "en",
  "name": "__MSG_extName__",
  "version": "1.0.2",
  "description": "__MSG_extDesc__",
  "browser_specific_settings": {
    "gecko": {
      "id": "qroole-qr@qroole.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "activeTab",
    "tabs",
    "contextMenus",
    "storage",
    "notifications",
    "clipboardWrite",
    "<all_urls>"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "libs/jsqr.min.js",
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "camera.html",
    "camera.js",
    "camera.css",
    "upload.html",
    "upload.js",
    "i18n.js",
    "libs/jsqr.min.js",
    "libs/qrcode.min.js",
    "icons/icon16.png",
    "icons/icon48.png",
    "icons/icon128.png"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}