International Standard
ISO/IEC 18181-1
Information technology — JPEG XL image coding system — Part 1: Core coding system
Reference number
ISO/IEC 18181-1
Edition 2
Under publication
ISO/IEC 18181-1
Final production steps (up to seven weeks).
Will replace ISO/IEC 18181-1:2022


This document defines a set of compression methods for coding one or more images of bi-level, continuous-tone greyscale, or continuous-tone colour, or multichannel digital samples.

This document:

—    specifies decoding processes for converting compressed image data to reconstructed image data;

—    specifies a codestream syntax containing information for interpreting the compressed image data;

—    provides guidance on encoding processes for converting source image data to compressed image data.

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