The best free alternative to GIFLIB is libpng, which is also Open Source. If that doesn't suit you, our users have ranked four alternatives to GIFLIB and four of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to GIFLIB are libjpeg-turbo, libjpeg and libtiff.
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...
libjpeg-turbo is a derivative of libjpeg that uses SIMD instructions (MMX, SSE2, NEON) to accelerate baseline JPEG compression and decompression on x86, x86-64, and ARM systems. On such systems, libjpeg-turbo is generally 2-4x as fast as the unmodified version of libjpeg, all...
