How AI describes OptiPNG

OptiPNG is an open-source PNG optimizer that recompresses PNG images to smaller sizes without losing information. It can also convert external formats (BMP, GIF, PNM, TIFF) to optimized PNGs and perform PNG integrity checks and corrections. The project provides downloadable binaries and source code, documentation, and release notes under the ZLIB license, and includes security advisories for older versions.