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# minimumDimension

The minimum height or width for a generated thumbnail.

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

## 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`](/documentation/QuickLookThumbnailing/QLThumbnailGenerator/Request/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`](/documentation/QuickLookThumbnailing/QLThumbnailGenerator/Request/RepresentationTypes-swift.struct), then [`QLThumbnailGenerator`](/documentation/QuickLookThumbnailing/QLThumbnailGenerator) doesn’t generate a thumbnail.

---

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