Examine source code of Whatsapp Link Generator

{
  "manifest_version": 2,
  "name": "Whatsaap Link Generator",
  "version": "1.1.0",
  "description": "Create a whatsapp link based on phone number",
  "icons": {
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png"
  },
  "browser_action": {
    "default_icon": "icons/icon-32.png",
    "default_title": "Whatsapp Generator",
    "default_popup": "index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d4cca336-4be8-4685-8896-8792eddac195}"
    }
  }
}