FLIF is a novel lossless image format which outperforms PNG, lossless WebP, lossless BPG, lossless JPEG2000, and lossless JPEG XR in terms of compression ratio.


libspng is described as 'C library for reading and writing Portable Network Graphics (PNG) format files with a focus on security and ease of use' and is an app in the development category. There are 2 alternatives to libspng for Linux, Mac and Windows. The best libspng alternative is FLIF, which is both free and Open Source.
FLIF is a novel lossless image format which outperforms PNG, lossless WebP, lossless BPG, lossless JPEG2000, and lossless JPEG XR in terms of compression ratio.


libpng is the official Portable Network Graphics (PNG) reference library (originally called pnglib). It is a platform-independent library that contains C functions for handling PNG images. It supports almost all of PNG's features, is extensible, and has been widely used and...