Note: help and version output are generated by a naïve script which tries a few variants of
<command> --help, <command> -h etc. to find the command's help and version info.
Sometimes it gets lucky, sometimes it doesn't; if the output below looks wrong, it probably is.
webpinfo -version (return code: 0)
WebP Decoder version: 0.6.1
webpinfo -h (return code: 0)
Usage: webpinfo [options] in_files
Try -longhelp for an exhaustive list of options.