FS PDF Compressor

FS PDF Compressor is a small, private PDF compressor for macOS.

It is built for one simple job: make PDFs smaller before sending them, without uploading documents to a website or dealing with complicated settings.

• Drag in one PDF, multiple PDFs, or a folder
• Everything is processed locally on your Mac
• No accounts, analytics, telemetry, or cloud uploads
• Files are replaced only when the compressed result is smaller
• Optional “Keep original” mode creates a separate compressed copy
• Balanced compression by default, with optional quality profiles

FS PDF Compressor is free and open source under AGPL-3.0-or-later. It includes Ghostscript, so no separate installation is required.

Requires Apple Silicon and macOS 14 or later. The distributed app is Developer ID signed and Apple-notarized.