FTVALID(1) General Commands Manual FTVALID(1) (NAME) ftvalid - (SYNOPSIS) ftvalid [options] fontfile (DESCRIPTION) ftvalid (layout) OpenType . FreeType . (OPTIONS) -f index (: 0). -t validator . ot gx ckern. FreeType ( `otvalid' `gxvalid' ). -T tbls [ot, gx] sfnt . <<:>> . ot BASE GDEF GPOS GSUB JSTF MATH. gx feat mort morx bsln just kern opbd trak prop lcar. : -T "feat:morx" -T dialect [ckern] kern . <<:>> . . ckern ms apple. -l SFNT . ( -t) . ckern `kern' . -L ckern `kern' . -V level . 0 () 1 () 2 ( ). -v . (ENVIRONMENT VARIABLES) FT2_DEBUG `component:level' . level [1,7] . ot otvmodule otvcommon otvbase otvgdef otvgpos otvgsub otvjstf. gx gxvmodule gxvcommon gxvfeat gxvmort gxvmorx gxvbsln gxvjust gxvkern gxvopbd gxvtrak gxvprop gxvlcar. ckern gxvkern . : FT2_DEBUG="otvcommon:5 gxvkern:7" FT2_DEBUG FreeType . FreeType 2.14.3 March 2026 FTVALID(1)