Protect PDF with Password — AES Encryption
Encrypt your PDF with a password (AES-256) and restrict printing, copying or editing. Your file never leaves your device.
Choose files
or drag and dropPDF
Your files never leave your device — everything runs locally in your browser.
Continue with another tool
How it works
- 1
Select a PDF
Upload the PDF you want to protect.
- 2
Set a password
Enter and confirm a password — its strength is shown right away.
- 3
Choose permissions
Allow or block printing, copying, editing, commenting and form filling.
- 4
Encrypt
The PDF is encrypted with AES-256 — then download.
Typical uses
- Email payslips, medical letters or tax documents securely.
- Protect confidential quotes from being forwarded.
- Restrict copying and printing of course notes or e-books.
Tips
- Share the password through a different channel than the file, e.g. by text message.
- A forgotten password can’t be recovered — store it safely.
- Permission restrictions without an open password offer only weak protection.
Related guides
Lightning Fast
All processing happens instantly in your browser — no server uploads needed.
100% Private
Your files never leave your device. Everything is processed locally.
Free Forever
No sign-up, no watermarks, no file limits. Completely free to use.
98 Languages
Available in 98 languages worldwide.
Frequently Asked Questions
How secure is the encryption?
PDFs are encrypted with AES-256, the strongest standard encryption for PDF files.
Can I restrict printing or copying?
Yes. You can allow or block printing, copying and editing.
Is my password sent anywhere?
No. Encryption happens entirely in your browser.