Committee Draft of JPEG XL Image Coding System
JPEG XL is a practical approach focused on scalable web distribution and efficient compression of high quality images. It provides various benefits compared to existing image formats: 60% size reduction at equivalent subjective quality; fast, parallelizable decoding and encoding configurations; features such as progressive, lossless, animation, and reversible transcoding of existing JPEG with 22% size reduction; support for high quality applications including wide gamut, higher resolution/bit depth/dynamic range, and visually lossless coding. The JPEG XL architecture is traditional block transform coding with upgrades to each component.
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