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

Jon Sneyers
Luca Versari
Zoltan Szabadka
Amnon Cohen-Tidhar
Moritz Firsching
Evgenii Kliuchnikov
Tal Lev-Ami
Eric Portis
Thomas Richter
WATANABE Osamu
arxiv (2025) (to appear)

Abstract

This article provides an extensive overview of the JPEG XL codec, describing its features and coding tools,
the design rationale behind it, as well as its performance, history and potential future. It can be used as a
companion document to the standard (ISO/IEC 18181), or as a standalone article to better understand the
codec, either at a high level or in considerable technical detail.