If you need better speed + Mac support, try Smallpdf’s desktop app (not portable) or Ghostscript portable (command-line only, much steeper learning curve).
Download it. Put it on your emergency USB. You’ll be glad you have it when a client says "Your PDF is too big to email" from a borrowed computer. pdf compressor portable
Overall Rating: ⭐⭐⭐⭐ (4/5) – Excellent for travel, less ideal for batch-heavy workflows. If you need better speed + Mac support,