PDF Compress Expert is a Mac OS X utility for reducing the size of PDF files, which compresses PDF file size by optimizing the resolution and compression method of images, removing unused thumbnails and metadata, stripping dead-object and compressing other parts of PDF files. Just drop your file on the panel and it will quickly create a new, compressed PDF file suitable for sending via e-mail or posting on the Web. Now, Support macOS Sierra. ********************************************** Rich choices of compression options. ? Support five different PDF compression modes to select. ? Support customize compression mode: You can customize the image sampling and image compression. PDF documents compressed to the file size you need. ? You can get high quality but small PDF file after compression. For some PDF files, file size can be compressed by 90%. Compress PDF quickly and easily. ? Support batch compression: Compress multiple documents one time. ? Support drag and drop: You can just drag and drop PDF files to the interface of the application.