Examine source code of PIFRA Helper

{
  "manifest_version": 2,
  "name": "PIFRA Helper",
  "version": "1.0.0",
  "description": "PIFRA Helper - BPS Pay Scale, GPF, Pension, Tax Calculator & DDO Finder for Pakistan Govt Employees.",
  "browser_specific_settings": {
    "gecko": {
      "id": "pifra-helper@thepifra.pk",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "PIFRA Helper"
  },
  "permissions": [
    "tabs",
    "clipboardWrite"
  ]
}