About Private PDF

Why this exists

Most "free online PDF tools" work by uploading your document to someone else's server, processing it there, and sending the result back. That model quietly turns a contract, a medical record or a payslip into data sitting on a stranger's infrastructure — and it's why those sites need accounts, daily limits and paid plans to cover server costs.

PdfToolbox takes the opposite approach. Modern browsers are powerful enough to do the work themselves, so every tool here runs as JavaScript on your own device. No uploads means no server costs, which is why everything stays free, with no sign-up, no watermarks and no limits. It also means the privacy claim is checkable, not just promised — see how to verify local processing.

How it works

The site is fully static. When you open a tool, your browser loads open-source PDF libraries (pdf-lib, PDF.js) that read and transform your file entirely in memory. The result comes back as a normal download. Once a page has loaded, the tools even keep working offline.

Open source

The whole site is open source — browse the code on GitHub to see exactly what runs in your browser. Found a bug or want a tool we don't have yet? Open an issue or write to contact@private-pdf.com.