Protect PDF
Add a password and real AES-256 encryption to any PDF.
Lock a PDF with a password, encrypted with real AES-256.
Protect PDF wraps your document in AES-256 encryption — the same standard used by banks and governments. Set a password, and anyone who wants to open the file needs it — no plugins, no fine print.
- Batch processing
- API access
- Encrypted transport
- No file retention
What people use Protect PDF for.
Encrypt executed agreements before sending or archiving.
Password-protect an offer letter before emailing.
Require a password before board materials can be opened at all.
Keep research PDFs unreadable to anyone without the password.
Three steps, no learning curve.
Built for people who care about their documents.
Bank-grade cryptography — not the reversible PDF 1.x weak encryption.
The file is encrypted locally — it never has to leave your device.
AES-256 PDFs are standard in Acrobat, Preview, and every major reader.
Set it once — no separate owner key or permissions to configure.
Your documents belong to you.
Sable is designed around a single principle: your files are yours. We never train on them, never sell them, and never keep them longer than we need to.