Privacy
Last updated: May 2026
PDF Master is designed to know NOTHING about you. This page describes, plainly, what we do (and especially what we don't do) with your data.
Your files never leave your device
Every operation (merge, compress, sign, OCR…) runs in your browser via WebAssembly and Web Workers. No PDF, no image, no password is ever sent to a server. Cut your internet connection after the first page load — the app keeps working.
We don't set tracking cookies
No analytics cookies, no advertising cookies, no third-party pixels. The only cookie we set is NEXT_LOCALE, a functional cookie that remembers your preferred language (FR / EN) — it's never sent to third parties and expires at session end.
Local storage for your convenience
While you use the tools, your files are temporarily kept in memory (IndexedDB) inside your browser so you can navigate between tools without re-uploading. This storage is local, never leaves your device, and is fully erasable by clearing your browser cache or via the « Clear all » button.
External connections (OCR only)
The OCR tool (text recognition on scanned PDFs) downloads on first use the Tesseract engine (~3 MB, from jsdelivr) and a language model (~10 MB, from projectnaptha). Those files are then cached by your browser — subsequent uses are fully offline. The content of your PDFs is NEVER transmitted.
Your rights
Since we collect no personal data, there's nothing to export, rectify or delete server-side. You can erase all local traces from your browser at any time (clear cache + IndexedDB).
Have a question?
Does this policy feel incomplete or ambiguous? PDF Master's source code is open — you can verify for yourself that the promises above are kept.