Every PDF operation — merging, splitting, compression, editing — happens right inside your browser using WebAssembly and native JavaScript. No external servers, no intermediate storage, no traces left behind.
We designed a "zero-knowledge" architecture: your files are processed locally. No internet transfer, no cloud copy. Not even we can access your documents — because they never reach our network.
All operations run within the secure sandbox of your modern browser (Chrome, Firefox, Edge, Safari). Our scripts are read-only to your files, and after you close the tab, every byte disappears.
We built DocyPDF on trust-by-design: ✅ No server-side processing, ✅ no cookies for file tracking, ✅ no analytics that read your content. The source code is fully transparent and our security is audited by third-party privacy researchers.
❌ No PDF files on servers · ❌ No user logs · ❌ No uploaded content copies · ❌ No session replay · ❌ No IP tracking for file operations. Your document names, metadata, and content are never persisted. Ever.
Our PDF worker logic is fully inspectable via browser DevTools — we don't obfuscate security-critical code. Every network request is visible; we guarantee zero external PDF transmissions. Independent security reviews validate our "no-upload" claim. We publish regular transparency reports regarding data handling: zero data requests from authorities because we hold zero data.
No. Files are never sent to our servers. They are processed in-memory within your browser session. Closing the tab erases all traces. For shared devices, simply close the tab — nothing remains.
We only store essential, non-identifying preferences (like theme). No analytics cookies, no tracking pixels, no session recording. Your usage remains anonymous.
Most online PDF tools upload your document to their servers for processing — a huge privacy risk. DocyPDF is built from ground up on client-side tech. Your sensitive contracts, IDs, or financial PDFs never transit over the network.
Absolutely. Our free tier uses the same client-side architecture as enterprise. No watermarks. Trusted by legal firms, healthcare pros, and students worldwide.