Frequently asked questions
Are my PDF files uploaded to a server?
No. PrivatePDF processes everything locally inside your browser. Your files never leave your device and are never sent to any server. This makes PrivatePDF safe to use with confidential or sensitive documents.
Does PrivatePDF work on iPhone and Android?
Yes. The tool is fully mobile-friendly and supports touch-based drag and drop for reordering pages on smartphones and tablets. It works in Safari on iOS and Chrome on Android.
Can I merge more than two PDF files?
Yes. You can upload and merge an unlimited number of PDF files at once. Use the "Add More" button to add additional files at any time and freely mix pages from all sources.
Is PrivatePDF free to use?
Yes, PrivatePDF is completely free. There is no account required, no subscription, and no hidden costs. The tool will always be free to use.
Does it work without an internet connection?
After the page has loaded once, the tool works fully offline. No internet connection is required to edit, reorder, or export your PDFs.
What is the maximum file size?
There is no enforced file size limit set by PrivatePDF. The practical limit depends on your device's available memory. Large files with many pages may take a few extra seconds to process.