Examine source code of PDF2DOCS

{
  "background": {
    "scripts": [
      "js/browser-polyfill.js",
      "js/util.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.pdf2docs.com/*"
      ],
      "js": [
        "js/beacon-script.js"
      ]
    }
  ],
  "manifest_version": 2,
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "64": "icons/64.png",
    "128": "icons/128.png",
    "512": "icons/512.png"
  },
  "description": "__MSG_appDesc__",
  "name": "__MSG_appName__",
  "default_locale": "en",
  "permissions": [
    "https://*.pdf2docs.com/*"
  ],
  "chrome_url_overrides": {
    "newtab": "new-tab/new-tab.html"
  },
  "short_name": "__MSG_appShortName__",
  "version": "0.0.1"
}