Password Protect PDF Files
Encrypt your PDF with a strong user or owner password.
How it Works
- Upload the document you want to secure.
- Enter the user password (required to view) and/or owner password.
- Choose restriction parameters (restrict printing, copying text, etc.).
- Download your newly encrypted PDF.
Core Benefits
- Local cryptographic key generation
- Supports standard PDF permissions limits
- Zero transit of passwords or content
Why Choose Client-Side Processing?
Apply standard security permissions and RC4/AES encryption to secure your PDFs before sharing. Restrict editing, copying, or printing locally without sharing keys with cloud providers.
Instead of standard web servers converting, rewriting, or holding files in cache, TellPDF mounts WASM binaries directly in your browser. All memory registers are local and vanish once you reload the page.