Jacob Allred

The CW Image Optimizer is a WordPress plugin that will automatically and losslessly optimize your images as you upload them to your blog. It can also optimize the images that you have already uploaded in the past.
Because CW Image Optimizer uses lossless optimization techniques, your image quality will be exactly the same before and after the optimization. The only thing that will change is your file size.
The CW Image Optimizer plugin is based on the WP Smush.it plugin. Unlike the WP Smush.it plugin, your files won’t be uploaded to a third party when using CW Image Optimizer. Your files are optimized using the Linux <a href="http://sourceforge.net/projects/littleutils/" rel="nofollow ugc">littleutils</a> image optimization tools (available for free). You don’t need to worry about the Smush.it privacy policy or terms of service because your images never leave your server.
Why use CW Image Optimizer?
<ol>
<li>Your pages will load faster. Smaller image sizes means faster page loads. This will make your visitors happy, and can increase ad revenue.</li>
<li>Faster backups. Smaller image sizes also means faster backups.</li>
<li>Less bandwidth usage. Optimizing your images can save you hundreds of KB per image, which means significantly less bandwidth usage.</li>
<li>Super fast. Because it runs on your own server, you don’t have to wait for a third party service to receive, process, and return your images. You can optimize hundreds of images in just a few minutes.</li>
</ol>
<h3>Contact and Credits</h3>
Written by <a href="http://www.jacoballred.com/" rel="nofollow ugc">Jacob Allred</a> at <a href="http://www.corbanworks.com/" rel="nofollow ugc">Corban Works, LLC</a>. Based on WP Smush.it.

CW Image Optimizer

Reduce image file sizes and improve performance using Linux image optimization programs.

Alex Dunae

This is a very basic integration made by popular request: the only thing it does is smushes new images.
We don’t use NextGEN Gallery, so anyone wanting more functionality (re-smush, bulk smush, etc…) is encouraged to dive in and contribute.
Plugin updates are announced on <a href="http://www.twitter.com/TheCHANGELOG" rel="nofollow ugc">http://www.twitter.com/TheCHANGELOG</a>.
<h3>Contact and Credits</h3>
Written by Alex Dunae at Dialect (<a href="http://dialect.ca/" rel="nofollow ugc">dialect.ca</a>, e-mail ‘alex’ at ‘dialect dot ca’, Twitter <a href="https://twitter.com/#!/thechangelog" rel="nofollow ugc">@TheCHANGELOG</a>, 2011.

WP Smush.it NextGEN Gallery Integration

This is a very basic integration made by popular request: the only thing it does is smushes new images.

CW Image Optimizer vs WP Smush.it NextGEN Gallery Integration