"Peter Wyatt, CTO of the PDF Association, said: "We need to adopt a new image [format] that can support HDR [High Dynamic Range] content ... we have picked JPEG XL as our preferred solution." Wyatt also praised other benefits of JXL including wide gamut images, ultra-high resolution support for images with more than 1 billion pixels, and up to 4099 channels with up to 32 bits per channel."
"JPEG XL is an advanced image format that was designed to be both more efficient and richer in features than JPEG. It was based on a combination of the Free Lossless Image Format (FLIF) from Cloudinary and a Google project called PIK, first released in late 2020, and fully standardized in October 2021 as ISO/IEC 18181. There is a reference implementation called libjxl. A second edition of the ISO standard was published in 2024."
"JXL appeared to have wide industry support, including experimental implementation in Chrome and Chromium, until it was killed by Google in October 2022 and removed from its web browser engine. The company stated that "there is not enough interest from the entire ecosystem to continue experimenting with JPEG XL." Many in the community disagreed with the decision, including FLIF inventor Jon Sneyers, who perceived it as the outcome of an internal battle between proponents of JXL and a rival format, AVIF."
The PDF Association will add support for JPEG XL to the PDF specification to enable HDR and advanced imaging capabilities. JPEG XL enables wide color gamut, ultra-high resolutions beyond one billion pixels, and up to 4099 channels with 32-bit depth per channel. The format combines technologies from FLIF and Google's PIK, was first released in late 2020, and became ISO/IEC 18181 in October 2021, with a libjxl reference implementation; a second ISO edition arrived in 2024. Chromium previously experimented with JPEG XL but Google removed it in October 2022 citing insufficient ecosystem interest, prompting community disagreement.
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