Examine source code of PdfProConvert

{
  "applications": {
    "gecko": {
      "id": "{6afa3591-903b-4352-968a-3212fea17046}",
      "strict_min_version": "46.0"
    }
  },
  "manifest_version": 2,
  "name": "PdfProConvert",
  "version": "2.1.8",
  "description": "We provide free function for converting any document file to PDF from the task bar icon.",
  "browser_action": {
    "default_icon": {
      "19": "images/icon19.png",
      "38": "images/icon38.png"
    }
  },
  "options_ui": {
    "page": "html/popup/popup.html",
    "chrome_style": true
  },
  "chrome_url_overrides": {
    "newtab": "html/default/index.html"
  },
  "icons": {
    "128": "images/icon128.png"
  },
  "background": {
    "scripts": [
      "js/bg.js"
    ]
  },
  "web_accessible_resources": [
    "*.json",
    "/images/icon128.png"
  ]
}