---
title: resourcesSizeEstimate
framework: appmigrationkit
role: symbol
role_heading: Instance Property
path: appmigrationkit/resourcesexportingwithoptions/resourcessizeestimate
---

# resourcesSizeEstimate

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

## Declaration

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

## Discussion

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

## See Also

### Declaring resource properties

- [resourcesVersion](appmigrationkit/resourcesexportingwithoptions/resourcesversion.md)
- [resourcesCompressible](appmigrationkit/resourcesexportingwithoptions/resourcescompressible.md)