Examine source code of KDSPY Pro

{
  "name": "KDSPY – Keyword Research for Authors",
  "description": "KDSPY is a time-saving book research companion that every author – fiction or non-fiction – should have in their toolbox.",
  "version": "5.13.56",
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  "background": {
    "scripts": [
      "/libs/ui.js",
      "/libs/other.js",
      "background.js"
    ],
    "persistent": false
  },
  "options_ui": {
    "page": "/pages/options/options.html",
    "browser_style": false
  },
  "permissions": [
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    "*://*.amazon.de/*",
    "*://*.amazon.fr/*",
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    "*://*.amazon.co.jp/*",
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    "*://*.amazon.com.br/*",
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  "optional_permissions": [
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  ],
  "content_scripts": [
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        "*://*.amazon.it/*",
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        "*://*.amazon.com.au/*",
        "*://*.amazon.com.br/*",
        "*://*.amazon.com.mx/*"
      ],
      "run_at": "document_start",
      "js": [
        "/libs/ui.js",
        "/libs/other.js",
        "/contentscripts/pageScript.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": {
      "19": "assets/images/zoom-19.png",
      "38": "assets/images/zoom-38.png"
    },
    "default_title": "KDSPY",
    "default_popup": "/pages/popup/popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{542033ba-2ac7-4d31-bcf6-0fb262ff668c}"
    }
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}