eqn2graph(1) General Commands Manual eqn2graph(1)
Name
eqn2graph - convert an eqn equation into a cropped image
Synopsis
eqn2graph [-format output-format] [convert-argument ...]
eqn2graph --help
eqn2graph -v
eqn2graph --version
Description
eqn2graph reads a one-line eqn(1) equation from the standard input and
writes an image file, by default in Portable Network Graphics (PNG)
format, to the standard output.
The input EQN code should not be preceded by the .EQ macro that
normally precedes it within groff(1) macros; nor do you need to have
dollar-sign or other delimiters around the equation.
Arguments not recognized by eqn2graph are passed to the ImageMagick or
GraphicsMagick program convert(1). By specifying these, you can give
your image a border, set the image's pixel density, or perform other
useful transformations.
The output image is clipped using convert's -trim option to the
smallest possible bounding box that contains all the black pixels.
Options
--help displays a usage message, while -v and --version show version
information; all exit afterward.
-format output-format
Write the image in output-format, which must be understood by
convert; the default is PNG.
Environment
GROFF_TMPDIR
TMPDIR
TMP
TEMP These environment variables are searched in the order shown to
determine the directory where temporary files will be created.
If none are set, /tmp is used.
Authors
eqn2graph was written by Eric S. Raymond <esr@thyrsus.com>, based on a
recipe for pic2graph(1), by W. Richard Stevens.
See also
pic2graph(1), grap2graph(1), eqn(1), groff(1), convert(1)
groff 1.24.1 2026-05-15 eqn2graph(1)
groff 1.24.1 - Generated Mon May 18 07:55:41 CDT 2026