---
title: minimumDimension
framework: quicklookthumbnailing
role: symbol
role_heading: Instance Property
path: quicklookthumbnailing/qlthumbnailgenerator/request/minimumdimension
---

# minimumDimension

The minimum height or width for a generated thumbnail.

## Declaration

```swift
var minimumDimension: CGFloat { get set }
```

## Discussion

Discussion This property defines a minimum dimension for a generated thumbnail, returning a thumbnail with a width or height greater or equal to the value of minimumDimension * scale. The default value for this property is 0. If you set this property, and the system can’t generate a thumbnail of minimumDimension for any of the requested types represented by QLThumbnailGenerator.Request.RepresentationTypes, then QLThumbnailGenerator doesn’t generate a thumbnail.

## See Also

### Describing the Requested Thumbnail

- [size](quicklookthumbnailing/qlthumbnailgenerator/request/size.md)
- [scale](quicklookthumbnailing/qlthumbnailgenerator/request/scale.md)
- [contentType](quicklookthumbnailing/qlthumbnailgenerator/request/contenttype.md)
- [representationTypes](quicklookthumbnailing/qlthumbnailgenerator/request/representationtypes-swift.property.md)
- [iconMode](quicklookthumbnailing/qlthumbnailgenerator/request/iconmode.md)
- [QLThumbnailGenerator.Request.RepresentationTypes](quicklookthumbnailing/qlthumbnailgenerator/request/representationtypes-swift.struct.md)