Examine source code of JuiceNote Plugin

{
  "manifest_version": 3,
  "name": "JuiceNote",
  "version": "2.3",
  "description": "Simplify the way you add notes to Juicenote.",
  "icons": {
    "19": "skin/icon16.png",
    "48": "skin/icon48.png",
    "128": "skin/icon128.png"
  },
  "permissions": [
    "tabs",
    "storage"
  ],
  "options_ui": {
    "page": "html/options.htm"
  },
  "options_page": "html/options.htm",
  "action": {
    "default_icon": "skin/icon16.png",
    "default_title": "new JNote",
    "default_popup": "html/popup.htm"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "juicenote@gmail.com"
    }
  },
  "host_permissions": [
    "*://juicenote.com/*"
  ]
}