Covert woff file to otf file
woff2sfnt [-v | -m | -p] <woff>
Decode WOFF file woff, writing OpenType data to stdout.
(instead of decoding to OpenType format)
-h
Show the help message.
-v
Write font version to stdout.
-m
Write WOFF metadata block to stdout.
-p
Write private data block to stdout