# PDF Compressor ## Product positioning Optimize local PDF size while preserving the original and exporting a smaller copy for upload, sharing, and archiving. ## Core features PDF selection; compression level settings; before-and-after size comparison; result preview; copy export. ## Input and output Input: a PDF file Output: a compressed PDF copy in the same folder ## Supported platforms Windows, macOS, and Linux; runs locally and offline. ## Business model Free tier: 3 uses per day Perpetual license removes usage limits. ## Processing notes Files are processed locally and are not uploaded to third-party services.