<!--
{
  "availability" : [
    "iOS: 26.0.0 -",
    "iPadOS: 26.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "AppMigrationKit",
  "identifier" : "/documentation/AppMigrationKit/ResourcesExportingWithOptions/resourcesSizeEstimate",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "AppMigrationKit"
    ],
    "preciseIdentifier" : "s:15AppMigrationKit29ResourcesExportingWithOptionsP21resourcesSizeEstimateSivp"
  },
  "title" : "resourcesSizeEstimate"
}
-->

# resourcesSizeEstimate

The estimated size of all resources to export, in bytes.

```
var resourcesSizeEstimate: Int { get async }
```

## Discussion

AppMigrationKit uses this property when preflighting the app transfer to estimate the data size required for the transfer.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)