The JPEG XL Image Coding System: History, Features, Coding Tools, Design Rationale, and Future

TL;DR

JPEG XL is a comprehensive new image coding system designed to outperform existing formats in compression, support lossless recompression, and unify multiple image formats with advanced features, backed by detailed design and future outlook.

Contribution

This paper provides an in-depth overview of JPEG XL's design, features, and development history, highlighting its potential to replace multiple legacy image formats.

Findings

JPEG XL achieves state-of-the-art compression performance.

Supports lossless JPEG recompression.

Offers advanced features for diverse image applications.

Abstract

JPEG XL is a new image coding system offering state-of-the-art compression performance, lossless JPEG recompression, and advanced features. It aims to replace JPEG, PNG, GIF, and other formats with a single universal codec. This article provides an overview of JPEG XL, including its history, design rationale, coding tools, and future potential. It can be used as a companion document to the standard (ISO/IEC 18181), or as a standalone article to better understand JPEG XL, either at a high level or in considerable technical detail.