A PDF24 alternative that's private in the browser, not just on Windows
Credit where due: PDF24 is genuinely free, and its Windows desktop app (PDF24 Creator) processes files locally. But the online tools at pdf24.org — the part most people actually use — upload your documents to PDF24's servers for processing. Private PDF gives you desktop-app privacy inside the browser itself: files stay on your device on Windows, Mac, Linux, Chromebook or your phone, with nothing to install.
How Private PDF compares
| Private PDF | PDF24 | |
|---|---|---|
| Online tools upload your file | Never | Yes (deleted per policy) |
| Local processing on Mac / Linux / mobile | Yes — any modern browser | No — local app is Windows-only |
| Install required for local privacy | No | Yes (PDF24 Creator) |
| Account required | No | No |
| Price | Free, unlimited | Free (sponsored/ads) |
| Works offline | Yes (PWA — after first load) | Desktop app only |
PDF24 is one of the more honest players in this space — free without artificial limits, with a clear privacy policy and servers in Germany. The trade-off is architectural: to get local processing you must install a Windows program, and if you use the web tools instead, your document makes a round trip to their servers, protected by a deletion policy you can't observe.
Private PDF removes that trade-off for everyday tasks. Merge, split, compress, rotate, convert and unlock run as JavaScript in the page, so there's no upload to delete and no platform requirement — and you can watch the Network tab to confirm zero bytes leave your machine.
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Questions, answered
Is PDF24 safe to use?
By upload-based standards, yes — files are processed on German servers and deleted promptly per their policy. The difference is that with Private PDF there's nothing to trust: the file never leaves your browser, which you can verify yourself.
PDF24 Creator is local too — why use Private PDF?
PDF24 Creator is Windows-only and requires installation. Private PDF gives you the same keep-it-local guarantee in any browser on any OS, with no install — and it keeps working offline once loaded.
Is it free? Do I need an account or to install anything?
It's completely free with no sign-up, no email and nothing to install. There are no daily limits and no watermarks on your output.
Are my files uploaded to a server?
No. Every operation runs entirely in your browser using JavaScript, so your files never leave your device. Open your browser's Network tab and watch — nothing is sent or stored.