# url(forResource:withExtension:) Returns the file URL for the resource identified by the specified name and file extension. ``` func url(forResource name: String?, withExtension ext: String?) -> URL? ``` ## Parameters `name` The name of the resource file. If you specify `nil` , the method returns the first resource file it finds with the specified extension. `ext` The extension of the resource file. If `extension` is an empty string or `nil` , the extension is assumed not to exist and the file URL is the first file encountered that exactly matches `name` . ## Return Value The file URL for the resource file or `nil` if the file could not be located. ## Discussion If `extension` is an empty string or `nil`, the returned pathname is the first one encountered where the file name exactly matches `name`. For details on how localized resources are found, read [The Bundle Search Pattern](https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFBundles/AccessingaBundlesContents/AccessingaBundlesContents.html#//apple_ref/doc/uid/10000123i-CH104-SW7) in [Bundle Programming Guide](https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFBundles/Introduction/Introduction.html#//apple_ref/doc/uid/10000123i). --- Copyright © 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)