PDF Shrink makes it quick and easy to compress your PDF files!
There are two presets (High and Medium) that should work for the majority of users, but you can also select custom quality and resolution settings.
You can configure PDF Shrink to overwrite the original file or to save a copy of the compressed files.
Also, PDF Shrink can convert multiple files at once!
Please note: PDF Shrink compresses the images contained in your PDF file. Text-only PDF files cannot be further compressed. Also, if the images in your PDF are already compressed, PDF Shrink may not be able to compress them further.