I Built a PDF Toolbox That Never Uploads Your Files — Here's How

Every "free online PDF tool" uploads your files to a server. I built one that doesn't — and here's the technical breakdown.

The Privacy Problem

Try this: Google "compress pdf online free" and use the first 5 results. Each one uploads your PDF to their server, processes it, and gives you a download link. Your file sits on their server — anywhere from 1 hour to 14 days.

The privacy policies tell the story:

Smallpdf: "We retain your files for 1 hour"