Examine source code of Bookmarks to Https

{
  "manifest_version": 2,
  "name": "Bookmarks to Https",
  "description": "Find Http bookmarks and convert to Https",
  "version": "1.0.0",
  "permissions": [
    "bookmarks"
  ],
  "browser_action": {
    "default_icon": "assets/icon.svg",
    "default_title": "Beastify",
    "default_popup": "assets/convert.html"
  },
  "icons": {
    "48": "assets/Icon-48.png",
    "96": "assets/Icon-96.png"
  }
}