extractbb(1) DVIPDFMx extractbb(1)
NAME
extractbb, ebb - extract bounding box information from graphics files
SYNOPSIS
extractbb [-v|-q] [-O] [-m|-x] file...
DESCRIPTION
For each JPEG, PNG, or PDF file given on the command line, extractbb
extracts the bounding box information and writes it into a file with
extension .xbb, together with some header information. These files can
then be used by dvipdfmx or other programs. For PDF files, the number
of pages and the PDF version number are reported as well. The input
filename extension may be in upper or lower case.
If called as ebb, the output is written in the ``bb'' format (and with
extension .bb) as used by dvipdfm. Xbb may be defined as a synonym for
extractbb on your system.
OPTIONS
-v Be verbose.
-q Be quiet.
-O Write output to standard output.
-m Write output in dvipdfm's ``bb'' format.
-x Write output in dvipdfmx's ``xbb'' format (default), which is
the same as that used by pdfTeX.
OUTPUT FORMATS
Here are more details about the bb and xbb formats:
The original ebb (from dvipdfm) ignored density information in bitmap
images, and generated bounding boxes with 100px = 72bp = 1in.
Unfortunately, screenshots (especially) tend to look bad with this
approach.
So, extractbb (from dvipdfmx) uses density information if present.
Otherwise, it generates bounding box with 100px = 100bp. This is what
pdfTeX does.
BUGS
There is currently no way to specify which bounding box is taken for
PDF files. It will always be the first one from the following list:
ArtBox, TrimBox, BleedBox, MediaBox. (Often only MediaBox is defined.)
Moreover, the reported bounding box always refers to the first page in
a PDF file.
AUTHOR
extractbb was written by the DVIPDFMx project team
<dvipdfmx@ktug.or.kr>, based on the program ebb by Mark A. Wicks.
This manual page was also written by the DVIPDFMx project team, based
on a manual page Frank Kuster <frank@kuesterei.ch> wrote for the Debian
GNU/Linux system. It may be used, modified, and/or redistributed by
others without contacting the authors.
20120420 20 April 2012 extractbb(1)
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