LUnlock PDF — Unlock & Lock PDFs on Windows

LUnlock PDF is a modern Windows desktop application that lets you unlock, merge and lock PDF files directly on your PC. No web tools, no uploads everything happens 100% locally.

What you can do:
- 🔓 Unlock PDFs – remove the open password from PDF files that you own or are allowed to modify
- 🔐 Lock PDFs (AES-256) – protect your documents with a strong password
- 📂 Batch mode – process many PDF files in one go
- ➕ Merge PDFs – combine multiple files into one clean PDF document
- 💻 100% local on your PC – your files never leave your computer
- 📴 Works offline – after activation you no longer need an internet connection

How it works:
1. Purchase LUnlock PDF and complete the checkout.
2. You receive a download link and a license key.
3. Download and install the Windows app.
4. Enter your license key inside the app.
5. Drag and drop your PDF files and choose Unlock, Merge or Lock.

License:
- Lifetime license for the current version of LUnlock PDF
- Intended for use on your own documents or files you are allowed to modify
- One license is bound to one PC

Requirements:
- Windows 10 or Windows 11 (64-bit)
- Internet connection required only for the first activation
- A PDF reader (for example Adobe Reader or a web browser) to open the result files

Important:
Use this software only on documents that you own or are allowed to modify. You are fully responsible for how you use the application.