Below is a bunch of urls to online free image tools that will let you
take an existing image(s) & allow you easy manipulation of those image
files in several different ways.
There are no programs to download.
The only thing you download is the finished image products.
Some of these online image tool websites let you optimize .jpeg, .jpg,
gif, & .png file extensions.
Gif bot for example let's you convert jpeg(s) to gif(s) or vise-versa.
At the same time, it will optimize the image file for you. You choose
the one you want to download & save.
At Image Magick or Blendgif websites, you can combine these converted
gif files that you saved & make the five .gif files into a 5 cell
animation .gif image. presto!
At some of the other sites, listed below, you can add many othe types of
special effects & stuff like that.
This may be an OT post, but at least, it is free & a true alternative to
downloading the tool programs themselves.
S_H
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GIFBot-
(Converts & optimizes Gifs & Jpg)
http://netmechanic.com/GIFBot/optimize-webtv.htm
Image Magick
http://studio.imagemagick.net/
BlendGIF
http://srehttp2.srehttp.org/apps/blendgif/blendfrm.htm
http://www.gifworks.com/
http://www.myimager.com/
http://www.metasphere.net/web_tools/29.html
http://www.nbswebfx.com/