Examine source code of LeanIbank

{
  "manifest_version": 2,
  "name": "LeanIbank",
  "version": "1.0",
  "description": "Allows you to enter your password using your keypad or saved password in the browser.Also, removes the extra right sidebar containing ads on GT banks web portal. Use this on your own personal computer only.",
  "icons": {
    "48": "icons/leanibank-48.svg",
    "96": "icons/leanibank-96.svg"
  },
  "content_scripts": [
    {
      "matches": [
        "*://ibank.gtbank.com/*"
      ],
      "js": [
        "leanibank.js"
      ]
    }
  ]
}