NewEncoder returns a new `Encoder` instance configured by 'uri'.

NewGIFEncoder returns a new `GIFEncoder` instance.

NewJPEGEncoder returns a new `JPEGEncoder` instance.

NewPNGEncoder returns a new `PNGEncoder` instance.

RegisterEncoder registers 'scheme' as a key pointing to 'init_func' in an internal lookup table used to create new `Encoder` instances by the `NewEncoder` method.

GIFEncoder is a struct that implements the `Encoder` interface for encoding GIF images.

JPEGEncoder is a struct that implements the `Encoder` interface for encoding JPEG images.

PNGEncoder is a struct that implements the `Encoder` interface for encoding PNG images.

Encoder is an interface for writing data to multiple sources or targets.

EncoderInitializationFunc is a function defined by individual encoder package and used to create an instance of that encoder.