Download of iResizer 3.0 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This program's bundle is identified as com.teorex.iresizer.
The software lies within Design & Photo Tools, more precisely Viewers & Editors. This software for Mac OS X was originally produced by TeoreX. The most popular versions of the tool are 3.0, 2.5 and 2.2. IResizer can be installed on Mac OS X 10.7 or later. The app's installation file is generally known as iresizer.dmg. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
iResizer allows you to "fix" the aspect ratio of a photo. It folds the image so that it will still look natural and will retain the quality, integrity and spirit of the original. In order to preserve important objects you simply select them and run the resizing, the rest is done automatically.
iResizer scales an image without changing important visual content such as people, buildings, animals, etc.
You may want to check out more Mac applications, such as iResize, which might be similar to iResizer.