Lightweight PDF

Lightweight PDF is a free PDF compressor for Mac. - Reduce the file size of your scanned PDF documents by up to 90%. - Simple drag-and-drop interface. - Optimal balance between file size and quality. - Keep your confidential documents offline and private.

Usually this kind of features are found online in suspicious websites. Being able to do this from my desktop without sharing private information online is definitely a plus.

Pros:

Awesome tool to shrink PDF’s and maintain image quality. It’s idiot proof, just drag and the drop file and it will be compressed.

Cons:

Maybe could be expanded to incorporate other types of files or compressions.

Works great! Compressed a stubborn PDF with no noticeable difference in quality easily and quickly (~70% reduction in size from 26MB to around 7MB). Wouldn't mind an option to keep the original file, though. It simply overwrote the original without any warning.