Examine source code of JSON Beautifier

{
  "manifest_version": 2,
  "name": "JSON Beautifier",
  "version": "1.0",
  "description": "Format and beautify JSON easily",
  "permissions": [
    "activeTab",
    "clipboardWrite"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.png"
    }
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1cf021f9-9455-4db9-aacb-b1a363523d9b}"
    }
  }
}