---
title: QLPreviewHeight
framework: bundleresources
role: symbol
role_heading: Property List Key
path: bundleresources/information-property-list/qlpreviewheight
---

# QLPreviewHeight

A hint at the height, in points, of a Quick Look app’s previews.

## Discussion

Discussion If the app’s generator takes too long to produce the preview, Quick Look uses this key.

## See Also

### QuickLook

- [QLNeedsToBeRunInMainThread](bundleresources/information-property-list/qlneedstoberuninmainthread.md)
- [QLPreviewWidth](bundleresources/information-property-list/qlpreviewwidth.md)
- [QLSupportsConcurrentRequests](bundleresources/information-property-list/qlsupportsconcurrentrequests.md)
- [QLThumbnailMinimumSize](bundleresources/information-property-list/qlthumbnailminimumsize.md)