lossless-image-compression

JPEG XL image format reference implementation

World's Leading Open Source JPEG 2000 Codec

Open-source implementation of JPEG2000 Part-15 (or JPH or HTJ2K)

Single Header Quite Fast QOI(Quite OK Image Format) Implementation written in C++20

Crystal bindings for Grok

Haskell implementation of the QOI image format

A MATLAB implementation of JPEG 2000 Part 1 and Part 15 (HTJ2K) that complies with the conformance testing defined in JPEG 2000 Part 4. The goal of MatHTJ2K is to help a person who wants to develop an HTJ2K-based image compression system to understand the algorithms defined in HTJ2K.

Lossless Image Compression and Transmission in Matlab

Playing with lossless image compression based on the quadtree data structure

playing with dwt, lossy and lossless image compression

Experimental PNG

PAQ8PX compression archiver

Hiroki Kojima, Yasuyo Kita, Ichiro Matsuda, Susumu Itoh, Yusuke Kameda, Kyohei Unno, Kei Kawamura: "Improved Probability Modeling for Lossless Image Coding Using Example Search and Adaptive Prediction", Proceedings of the 25th International Workshop on Advanced Image Technology 2022 (IWAIT 2022), Jan. 2022.

Demo of a fast PNG encoder.

100% Swift base implementation of QOI (Quite OK Image Format)

Reversible (lossless) Image Compression.

CharLS Tools, a set of command line tools to CharLS JPEG-LS library

Scripts and results from the Lossless Compression Efficiency of JPEG-LS, PNG, QOI and JPEG2000: A Comparative Study white paper from CAST

Some JPEG operations can be lossless if you are using the right software. This project aims to inform your choice.