man jpegoptim Command

Man page for apt-get jpegoptim Command

Man Page for jpegoptim in Linux

This tutorial shows the man page for man jpegoptim in linux.

Open terminal with 'su' access and type the command as shown below:
man jpegoptim

Result of the Command Execution shown below:

JPEGOPTIM(1)                                                                                                                                            JPEGOPTIM(1)



NAME
       jpegoptim   utility to optimize/compress JPEG/JFIF files.



SYNOPSIS
       jpegoptim [ options ] [ filenames ]


DESCRIPTION
       jpegoptim  is  used  to  optimize/compress jpeg files. Program supports lossless optimization, which is based on optimizing the Huffman tables. And so called
       "lossy" optimization where in addition to optimizing Huffman tables user can specify upperlimit for image quality.



OPTIONS
       Options may be either the traditional POSIX one letter options, or the GNU style long options.  POSIX style options start with a single `` '', while GNU long
       options start with ``  ''.

       Options offered by jpegoptim are the following:

        d,   dest=
             Sets alternative destination directory where to save optimized files (default is to overwrite the originals). Please note that unchanged files won't be
             added to the destination directory. This means if the source file can't be compressed, no file will be created in the destination path.

        f,   force
             Force optimization, even if the result would be larger than the original file.

        h,   help
             Displays short usage information and exits.

        m[0..100],   max=[0..100]
             Sets the maximum image quality factor (disables lossless optimization mode, which is by default enabled). This option  will  reduce  quality  of  those
             source  files  that were saved using higher quality setting.  While files that already have lower quality setting will be compressed using the lossless
             optimization method.

        n,   noaction
             Don't really optimize files, just print results.

        o,   overwrite
             Overwrite target file even if it exists (when using  d option).

        p,   preserve
             Preserve file modification times.

        q,   quiet
             Quiet mode.

        t,   totals
             Print totals after processing all files.

        v,   verbose
             Enables verbose mode (positively chatty).


         strip all
             Strip all (Comment & Exif) markers from output file. (NOTE! by default only Comment & Exif markers are kept, everything else is discarded)

         strip com
             Strip Comment (COM) markers from output file.

         strip exif
             Strip EXIF markers from output file.





BUGS
       When optimizing progressive jpeg, result will be a normal jpeg.


SEE ALSO
       jpeginfo(1)


AUTHOR
       Timo Kokkonen 


COPYING
       Copyright (C) 1996,2002  Timo Kokkonen

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the  Free  Software
       Foundation; either version 2 of the License, or (at your option) any later version.
        This  program  is  distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
       FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
        You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software  Foundation,  Inc.,  675  Mass
       Ave, Cambridge, MA 02139, USA.



4th Berkeley Distribution                                                    07 Dec 2002                                                                JPEGOPTIM(1)

Related Topics