Bigger dimensions allowed Image dimensions of over a billion (2 30−1) pixels on each side. The main features are: More functions Improved functionality and efficiency compared to traditional image formats (e.g. The proposals were submitted by September 2018, leading to a committee draft in July 2019, with file format and core coding system were formally standardized on 13 October 2021 and 30 March 2022 respectively.

Any patented technology would be licensed on a royalty-free basis. Embedded preview images, lossless alpha channel encoding, image region encoding and complexity encoding. The standard should also offer higher bit depths (12–16 integer bits and floating point): additional color spaces with transfer functions such as Arri's Log C. RGB / YCbCr / ICtCp color encoding, animated images, alpha channel coding, Rec.709 ( sRGB) and gamma (2.4-power) color space, Rec.2100 wide color gamut color space (Rec.2020), and high dynamic range transfer functions (PQ and HLG), high-quality compression of synthetic images, such as bitmap fonts and gradients. The core requirements include support for ultra-high resolution images (at least 40 MP), 8-10 bits per component. (JPEG 2000) and also providing more efficient recompression lossless transport options for storage of images in the traditional/legacy JPEG format. The standard is expected to exceed the still image compression performance shown by HEVC HM, Daala and WebP and to outperform JPEG unlike previous attempts to replace it for the web eg. Since August 2017, JTC1/SC29/WG1 issued a series of draft calls for proposals on JPEG XL – the next generation image compression standard with substantially better compression efficiency (60% improvement) comparing to JPEG. The L was included as the authors' intention for the format is to replace the legacy JPEG and last as long too. The name consists of JPEG (for the Joint Photographic Experts Group, which is the committee which designed the format), X (part of the name of several JPEG standards since 2000: JPEG XT, JPEG XR, JPEG XS) and L (for long-term).

Psd codec