Comment by justinmayer

After making a few needed tweaks to get libbpg to compile on Mac OS X, I used the compiled bpgenc binary to convert a test PNG to BPG format. I also converted the PNG to a JPEG for comparison purposes. You can see the results here:

http://justinmayer.com/bpg-test/

Size of PNG before conversion: 186K

Size after conversion to JPEG: 52K

Size after conversion to BPG: 9K

I took the liberty of submitting a Homebrew formula, so hopefully this will soon be a quick "brew install libbpg" away. (^_^)

https://github.com/Homebrew/homebrew/pull/34722