Examine source code of URL Alias

{
  "name": "URL Alias",
  "description": "URL Alias allows the user to define a short alias for a url, in order to access websites faster.",
  "homepage_url": "https://github.com/merve40/url-alias",
  "version": "1.4",
  "manifest_version": 2,
  "permissions": [
    "storage",
    "tabs",
    "webNavigation"
  ],
  "background": {
    "scripts": [
      "browser-polyfill.min.js",
      "util.js",
      "background.js"
    ]
  },
  "icons": {
    "60": "icons/ic.svg"
  },
  "page_action": {
    "default_icon": "icons/ic.svg",
    "default_title": "URL Alias",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "url-alias@mrvshn40.com",
      "strict_min_version": "65.0"
    }
  }
}