libpng-legacy12: libpng-legacy12 (old PNG library for compatibility with old software) libpng-legacy12: libpng-legacy12: PNG (Portable Network Graphics) is an extensible file format for the libpng-legacy12: lossless, portable, well-compressed storage of raster images. libpng-legacy12: libpng-legacy12: This build provides libpng12.so, occasionally needed for running libpng-legacy12: older binary-only software. It can safely be installed without libpng-legacy12: conflicting with Slackware's own libpng (which is version 1.6). libpng-legacy12: libpng-legacy12: libpng-legacy12: