Secure your documents with confidence using PDFSmith, a fast and privacy-first PDF security tool that lets you lock PDFs, unlock PDFs, add passwords, remove password protection, and change PDF passwords — all fully offline on your device.
No uploads. No cloud processing. Your files never leave your phone.
Unlock Password-Protected PDFs
Remove password protection from PDFs when you know the correct password
Instantly unlock PDFs for viewing, editing, or sharing
Password is required — PDFSmith does not bypass or crack encryption
Lock PDFs with a Password
Add a password to unprotected PDF files
Secure sensitive documents before sharing
Protect PDFs instantly with strong encryption
Fast, Offline & On-Device
100% offline PDF processing
No internet connection required
Instant results with no waiting
Privacy-First by Design
Files are processed entirely on your device
No uploads to servers
No data collection or tracking
Save & Share Easily
Save locked or unlocked PDFs instantly
Share securely using your device’s share options
Perfect For
Professionals handling confidential documents
Students and educators
Travelers and offline environments
Anyone who values privacy and control
Key Features
Lock PDF with password
Unlock PDF with password
Add password to PDF
Remove password from PDF (password required)
Offline PDF security
On-device PDF processing
PDFSmith delivers professional-grade PDF security — fast, private, and completely under your control.
