Covert otf file to woff file
sfnt2woff [-v maj.min] [-m metadata.xml] [-p private.dat] otffile
Package OpenType otffile as WOFF, creating a WOFF file in the same directory and with the same basename.
-h
Show the help message and exit.
-v maj.min
Set font version number (major and minor, both integers).
-m metadata.xml
Include metadata from metadata.xml (not validated).
-p private.dat
Include private data block.