Download of iSlimPhoto 2.0.1 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. We recommend checking the downloaded files with any free antivirus. The application lies within System Tools, more precisely File Compression. This Mac app is a product of Idealistic Future Ltd.
From the developer:
iSlimPhoto is an application developed by Idealistic Future Ltd. iSlimPhoto can compress your photo library in such way that it will save alot of space without losing quality.
This is possible by using the setting "perfect" when compressing; this way photos will be reduced to the resolution of your display, and the rest of the extra-pixels will be wiped out.
You may want to check out more Mac applications, such as CreaDMG, iUPX or GeeUnRAR, which might be related to iSlimPhoto.