PDFOptim

What PDFOptim is

PDFOptim compresses and optimizes PDF files to reduce their size while retaining visual quality. Four automatic methods analyze a document and apply a compression approach, while manual controls cover JPEG quality, image downsampling, color profiles, and hidden metadata removal. A synchronized side-by-side preview helps compare the original and compressed versions before saving. The Mac app can process PDF folders in batches using multiple CPU cores, with drag-and-drop queues. Scanned documents can be converted to grayscale, monochrome, or bitonal profiles; RootRise says this can produce files up to 40 times smaller. A five-level vector optimization feature removes excess anchor paths and structural data from vector-heavy PDFs. Apple Shortcuts can trigger compression, and the maker describes a Finder Quick Action workflow. The maker says files are processed locally, not uploaded, and core features work offline; internet is used for purchase validation. The free version permits one compressed PDF export per week.