enum

ImageOutputFormat

Constants

JPEG = 0

largest in size, yet quickest in terms of encoding speed

WEBP = 1

~half size of JPEG, 3rd to last in terms of encoding speed

AVIF = 2

smallest in size, yet slowest in terms of encoding speed

PNG = 3

worst quality, 2nd to last in terms of encoding speed

AUTO = 4

placeholder type

from_path?(path : Path) : self | Nil

Returns format based on a file extension from the given path, nil otherwise.

from_request?(request : HTTP::Request, formats : Enumerable(self)) : self | Nil

Returns first of formats found to be supported by the request, nil otherwise.

from_request?(request : HTTP::Request, *formats : self) : self | Nil

Returns first of formats found to be supported by the request, nil otherwise.

auto?

Returns true if this enum value equals AUTO

avif?

Returns true if this enum value equals AVIF

extension

extensions

jpeg?

Returns true if this enum value equals JPEG

mime_type

png?

Returns true if this enum value equals PNG

to_slice(image : Vips::Image, **options) : Bytes

Returns image in a self format.

webp?

Returns true if this enum value equals WEBP