CacheTTL is the number of seconds that will be written to max-age HTTP header.

Log is the logger that could be overridden.

SaveDataEnabled is the flag to enable/disable Save-Data client hint.

HttpError is user defined error that could be used for customising responses of the service.

Info holds basic information about an image.

TransformationConfig is a configuration passed to Processor that used during transformations.

Loader is responsible for loading an original image for transformation.

Processor is the interface for transforming/optimising images.