Specifies the ratio to use when cleaning up the scaled images cache. Values between 0.1 and 1 will be considered. The cleanup will the consider the ratio for the amount of items as well as the size.

Specifies whether the image scaler functionality is enabled or not.

Specifies the size of the cache for the scaled images in Megabytes. If this value is set to '0', then the images will not be cached.