.TH GFTOPK 1 "25 January 2026" "Web2C 2026"
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.\"=====================================================================
.SH NAME
gftopk \- convert generic font (gf) bitmap files to packed font (pk) files
.SH SYNOPSIS
.B gftopk
.RB [ -v ]
.IR gf_file [gf]
.RI [ pk_file ]
.\"=====================================================================
.SH DESCRIPTION
The
.B gftopk
program converts a generic font
.RI ( gf )
bitmap file output by, typically,
.BR mf (1),
to a
packed font bitmap file for use by DVI-reading programs; notably,
.BR dvips (1)
only supports \fIpk\fP files.
Packed font files
.RI ( pk " files)"
are much smaller than the corresponding
.I gf
files.
.PP
The
.I gf_file
on the command line must include the resolution, but can omit the suffix
"gf". The
.I pk_file
defaults to the same (stripped) name as
.IR gf_file ,
and it is placed in the current
working directory with the
.B pk
suffix replacing
.BR gf .
For example, the input file
.I /some/directory/cmr10.300gf
would become
.IR cmr10.300pk .
.\"=====================================================================
.SH OPTIONS
See
.BR tex (1)
for details of command-line parsing.
.PP
By default,
.B gftodvi
operates silently.  With the \fB-v\fP (a.k.a\&. \fB-verbose\fP) option,
some reports are printed on stdout.
.PP
The standard
.B -help
and
.B -version
options are also supported.
.\"=====================================================================
.SH ENVIRONMENT
The program looks for
.I gf_file
using the environment variables GFFONTS, GLYPHFONTS, and TEXFONTS, in
that order. If none are set, it uses the system default. See the
Kpathsea manual at https://tug.org/kpathsea for the details of the
searching.
.\"=====================================================================
.SH "SEE ALSO"
.BR dvips (1),
.BR gftype (1),
.BR pktogf (1),
.BR pktype (1).
.br
Donald E. Knuth et al.,
.IR \*(MFware .
.PP
Package page on CTAN: https://ctan.org/pkg/gftopk
.br
Section in the Web2c manual:
https://tug.org/texinfohtml/web2c.html#gftopk-invocation
.br
Typeset source code, including file format descriptions:
https://ctan.org/pkg/knuth-pdf
.\"=====================================================================
.SH AUTHORS
Tomas Rokicki wrote the program. It was published as
part of the
.I \*(MFware
technical report. Paul Richards originally ported it to Unix.
.PP
Public discussion list and bug reports: https://lists.tug.org/tex-k