Examine source code of Bank Finder

{
  "manifest_version": 3,
  "name": "Bank Finder",
  "version": "1.2.0",
  "description": "Find and filter bank and branches by various criteria",
  "browser_specific_settings": {
    "gecko": {
      "id": "bankfinder@borrowbe.com",
      "strict_min_version": "58.0"
    }
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "action": {
    "default_popup": "index.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}