Install via Winget
winget install libjxl.libjxl
Open Windows Terminal or PowerShell and run the command above. Winget is built into Windows 10 (1809+) and Windows 11.
About libjxl
libjxl is the official reference implementation of JPEG XL, a next-generation image format offering superior compression and quality compared to JPEG. It provides both a C++ library and a suite of command-line tools for encoding, decoding, benchmarking, and analyzing images in the JPEG XL format. The suite includes cjxl for encoding, djxl for decoding, jxlinfo for metadata inspection, and numerous utilities for tone mapping, HDR conversion, and perceptual quality measurement.