pstoimg - Convert a PostScript file to a bitmap image using Ghostscript and the
] [ -debug
[ -density num
] [ -discard
[ -flip code
] [ -out file
] ] [
The command line options may be abbreviated to the shortest unique prefix.
- Show this help page and exit.
- Show the release and version of pstoimg and exit.
- Use Ghostscript's anti-aliasing feature for rendering "softer"
images. This applies to lines and edges of polygonal and oval or circular
shapes. Only valid if Ghostscript 4.03 or higher is installed.
- Use Ghostscript's anti-aliasing feature for "smoother" font
characters, without the jagged edges. Similar to -antialias for
graphic components. Only valid if Ghostscript 4.03 or higher is
- -center num
- Add the appropriate amount of whitespace to the left of the image so that
the image appears to be centered in a total width of num
- -crop code
- Crop the bitmap from the given directions. code may be a string of
several cropping instructions, which are executed strictly in the given
order. Possible values are: h (horizontal, i.e. crop top and
bottom), v (vertical), tblr (top, bottom, left, right) and
a (all directions). A special case is s: "shave"
the image at the bottom, but only if a single line of whitespace
- Turn on debugging output. This can get rather verbose. Any intermediate
files generated are not removed to help debugging.
- -density num
- The density (resolution) in DPI in which to render the bitmap. The default
- -depth num or -color num
- Specify the color depth of the bitmap. Legal values are 1 (black &
white), 8 (256 colors) and 24 (true color).
- Delete the input postscript file if the conversion was successful. Setting
the environment DISCARD to a true value (as perl sees it) has the same
- -flip code
- Flip all generated output bitmaps. The following codes are recognized: lr
(flip left-right), tb (flip top-bottom), xy (flip bottom/left-top/right),
r90 and ccw (rotate by 90 degrees counterclockwise), r270 and cw (rotate
90 degrees clockwise) and r180 (rotate 180 degrees).
- -geometry XxY
- Render only this "window" of the PostScript file. If given, this
option can dramatically reduce memory requirements and speed up
conversion. The geometry is automatically detected in case of EPS files
- Generate an interlaced bitmap. Interlaced images build up from coarse to
fine as they are loaded. This option may not work on every installation
and/or bitmap type, depending of the capabilities of external
- -margins X,Y
- The offset of the rectangle in the postscript file that is going to be
rendered from top/left. Can be used together with -geometry to
further reduce the size of the intermediate bitmap file generated by
- Process a multi-page PostScript file, i.e. create an individual bitmap for
every page. The resulting files are numbered: The decimal number (starting
with 1) is appended to the basename of the PostScript input file (or the
basename of the filename specified with -out), while keeping the
- -out file
- The file where to write the bitmap. If multiple PostScript files are
supplied on the command line, this option is ignored. The bitmap type
extension is appended automatically if file does not contain a dot.
In connection with -multipage file is extended by the page
number as shown in this example:
-outfile foo.gif --------> foo1.gif, foo2.gif, ...
- Do not print anything except error messages.
- -rightjustify num
- Add the appropriate amount of whitespace to the left of the image so that
it appears to be aligned to the right in a total width of num
- -scale factor
- Scale the image by factor. Valid choices are any numbers greater
than zero. Useful choices are numbers between 0.1 - 5. Large numbers may
generate very large intermediate files and will take longer to process. If
this option is omitted, the environment SCALE is considered.
- -shoreup num[d]
- Make height and width of the bitmap(s) an exact multiple of num. If
num is followed by a "d", then half the extra vertical
space is placed underneath. This option is useful, if you want to have
"blown-up" images of high quality for print, but downscale them
in HTML using "<IMG WIDTH=x HEIGHT=y>". If the actual
image is is not an integer multiple of x,y then browsers tend to display
- -tmp path
- Use path to store temporary files. Defaults to /tmp on this
installation. This parameter can be set by the environment TMP or
- -topjustify [x]num
- Add padding whitespace to the image so that it gets a defined height. If
an integer value is given, it defines the total height. The whitespace is
added at the bottom. If the number is preceded by "x", then this
multiple of the image height is added as whitespace at the bottom.
- Generate transparent bitmaps, i.e. the background color (white) is
transparent if viewed with certain viewers (e.g. browsers). This option
may not be available due to missing capabilities of external
- -type type
- Instruct pstoimg to render the bitmap in type format. Depending on
the local installation, pstoimg is capable of generating either GIF or PNG
bitmaps. This site features the following types: svg png gif
If omitted, the first type in this list is taken.
- Remove TeX's page color information from the PostScript file before
converting so that a white background is used.
iterates over the given input files and runs them through
Ghostscript. The resulting pnm (portable anymap files) are processed with
different Netpbm tools (cropping, color mapping, aligning, ...) and finally
converted into (currently) either GIF or PNG format. The bitmaps can now be
included e.g. in WWW pages.
The PostScript file is converted as is. If a valid bounding box is found (EPS
format), then only this area is converted. The image is not
- if everything went all right
- (x != 0) something went wrong. See the message output.
- "pstoimg foo.ps"
- Convert the first page of foo.ps to the default bitmap type.
- "pstoimg -type png -crop a -trans -interlace foo.ps"
- Same as above, but force png output and crop all the whitespace around the
image and make the color white transparent and generate an interlaced
- "pstoimg -multi -out bar -type gif -crop a foo.ps"
- Consider foo.ps a multiple page PostScript file and create output files
bar1.gif, bar2.gif, etc.
- DENSITY, DEPTH, DEBUG, DISCARD
- See -density, -depth, -debug, -discard,
- This variable is set to the path(s) where Ghostscript libraries have been
found on this system during configuration, but only if the built-in paths
are not correct. This fixes the problem of relocation that is quite common
on Win32 installations. This behavior can be overridden by setting GS_LIB
manually before starting pstoimg.
- The directory where the LaTeX2HTML library and perl modules are found.
Defaults to "/usr/share/latex2html" on this installation.
- Setting this has the same effect as specifying -out. Please do not
rely on this feature any more, it will disappear from the next
- The papersize to use by Ghostscript to render the image. pstoimg tries
hard to optimize for rendering on the smallest possible bitmap size. Still
this option is there to enable tuning by hand, although it is deprecated.
If pstoimg finds a better setting, this parameter is ignored.
- See the discussion of -scale.
- TMP and TEMP
- Unless overridden by -tmp, these variables denote a directory where
to store temporary files. TMP is considered first, then TEMP.
gs, pnmcrop, pnmquant, pbmmake, pnmcat, pnmfile, pnmflip, ppmtogif, pnmtopng,
Several people have suggested to use ImageMagick's convert instead of pstoimg. A
few comments on this: convert uses (of course) Ghostscript for conversion of
PostScript to bitmap, so one still needs gs. And for the special requirements
of LaTeX2HTML convert's features are not sufficient. The ImageMagick toolset
has everything in place, but it has some overhead that can prove killing when
processing some 100 images. pstoimg only does what it really has to, so it
should be quite efficient. Don't get me wrong - I like ImageMagick, but not in
the context of LaTeX2HTML.
This utility is automatically configured and built to work on the local setup.
If this setup changes (e.g. some of the external commands are moved), the
script has be be reconfigured.
Despite the portability of perl, a pstoimg configured on UNIX will probably not
work on Win32 and vice versa.
Please report bugs to firstname.lastname@example.org, stating the (debug) output of pstoimg,
your perl version and the versions of the external tools. Best is to include
the cfgcache.pm file from the configuration procedure.
Marek Rouchal <email@example.com>
This script went through a long evolution, beginning with a modification of Doug
Crabill's <firstname.lastname@example.org> ps2epsi script. The first perl version was
done by Nikos Drakos <email@example.com>. It was gradually improved
by numerous LaTeX2HTML developers: Ross Moore <firstname.lastname@example.org>,
Jens Lippmann <email@example.com> and others
(sorry for not mentioning everyone and thanks for your contributions).