# QLPreviewRequestCopyOptions(_:) Returns the options specified for the preview request. ``` func QLPreviewRequestCopyOptions(_ preview: QLPreviewRequest!) -> Unmanaged! ``` ## Parameters `preview` A preview request object. ## Return Value A dictionary containing the properties specified for the preview request. See `Preview Properties` for supported options. You should explicitly release this object when it is no longer needed. ## Discussion The client sets options in the preview request to give hints to the generator. For macOS 10.5, no options are supported. ### Special Considerations Thread-safety: This function should be called in the same thread as the preview request is made in; generally, this is the same thread in which the `GeneratePreviewForURL` callback was invoked. --- 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)