Examine source code of PayPal Autofill Pro

{
  "name": "PayPal Autofill Pro",
  "short_name": "Climax Paypal Looper",
  "version": "1.2",
  "manifest_version": 2,
  "description": "Automatically fill in PayPal card checkout forms using data from your linked Google Sheet. Designed by Climax Soft for fast, seamless transactions and increased productivity",
  "icons": {
    "16": "icons/refresh.png",
    "48": "icons/refresh.png",
    "128": "icons/refresh.png"
  },
  "browser_action": {
    "default_popup": "src/browser_action/browser_action.html",
    "default_icon": "icons/refresh.png",
    "default_title": "Climax Paypal Form Filler V2"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.paypal.com/webapps/*",
        "*://seogroupbuy.pro/*"
      ],
      "js": [
        "js/jquery.min.js",
        "js/script.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "storage",
    "tabs",
    "<all_urls>",
    "contextMenus",
    "notifications"
  ],
  "background": {
    "scripts": [
      "js/jquery.min.js",
      "src/bg/background.js"
    ]
  },
  "web_accessible_resources": [
    "icons/refresh.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{157732c5-14b1-4b16-b62d-f75e1d2490e1}"
    }
  }
}