MacBPGViewer is currently a work in progress.
MacBPGViewer is a native, open source BPG image viewer for Mac OS X.
BPG (Better Portable Graphics) is a new image format developed by Fabrice Bellard. Its purpose is to replace the JPEG image format when quality or file size is an issue. To learn more about the BPG image format, read this page.
MacBPGViewer has a home on GitHub.
MacBPGViewer uses HCImage-BPG for BPG decoding.