---
title: "init(filenameExtension:conformingToType:)"
framework: uniformtypeidentifiers
role: symbol
role_heading: Initializer
path: "uniformtypeidentifiers/uttypereference/init(filenameextension:conformingtotype:)"
---

# init(filenameExtension:conformingToType:)

## Declaration

```swift
convenience init?(filenameExtension: String, conformingToType supertype: UTType)
```