[Trac_gajim-plugins] [Gajim Plugins] #122: Autocompression and autoreduction

Gajim Plugins trac at gajim.org
Sat Mar 5 11:39:38 CET 2016

#122: Autocompression and autoreduction
  Reporter:  ilya-valeev@…  |      Owner:  Dicson
      Type:  enhancement    |     Status:  new
  Priority:  normal         |  Component:  ImagePlugin
Resolution:                 |   Keywords:
Blocked By:                 |   Blocking:

Comment (by Darlan):

 I suggest to take into consideration the type of image (e.g. JPG or PNG),
 for some different types would require different tools to be processed by.

 I have found several tools for PNG images and several other types.


 >  OptiPNG is a PNG optimizer that recompresses image files to a smaller
 size, without losing any information. This program also converts external
 formats (BMP, GIF, PNM and TIFF) to optimized PNG, and performs PNG
 integrity checks and corrections.


 > Pngcrush is an optimizer for PNG (Portable Network Graphics) files. It
 can be run from a commandline in an MSDOS window, or from a UNIX or LINUX
 commandline.  Its main purpose is to reduce the size of the PNG IDAT
 datastream by trying various compression levels and PNG filter methods. It
 also can be used to remove unwanted ancillary chunks, or to add certain
 chunks including gAMA, tRNS, iCCP, and textual chunks.


 > pngquant is a command-line utility and a library for lossy compression
 of PNG images. The conversion reduces file sizes significantly (often as
 much as 70%) and preserves full alpha transparency. Generated images are
 compatible with all modern web browsers.

Ticket URL: <http://trac-plugins.gajim.org/ticket/122#comment:3>
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