Add a password to any PDF to prevent unauthorized access — 256-bit AES encryption, 100% free.
or drag and drop your PDF here
No software to install. Works on every device.
Select a PDF from your device, Google Drive, Dropbox or paste a URL. Your file is transferred securely.
Choose a strong password to protect your PDF. Optionally restrict printing, copying and editing permissions.
Your password-protected PDF is ready instantly. We do not store files on our servers. Files are processed immediately and deleted.
Trusted by individuals, students and enterprises in 180+ countries.
Industry-standard 256-bit AES encryption — the same level used by governments and financial institutions.
Encrypt as many PDFs as you need with no fees, no limits and no account sign-up required.
We do not store files on our servers. Files are processed immediately and deleted.
Browser-based and 100% cross-platform — Windows, Mac, Linux, iOS and Android all work perfectly.
Restrict printing, copying, editing and form filling independently with fine-grained permission controls.
Encrypt PDFs at scale via our REST API. Full permission control, comprehensive docs and sandbox.
Strengthen document security with practical password and sharing habits.
The user password opens the PDF; the owner password controls permissions like printing, copying and editing.
Email the PDF and text the password — if one channel is compromised, the other remains protected.
AES-256 is the same encryption tier used by banks and governments; older 128-bit or RC4 PDFs offer much weaker protection.
Reusing passwords across multiple PDFs means a single leaked password exposes your entire archive.
File properties such as author, creation date and software name remain visible even in an encrypted PDF.
Brute-force tools crack common words in seconds; use a passphrase with mixed case, numbers and symbols.
You can allow printing but block text copying, or allow commenting but block form filling — each right is set separately.
Open the encrypted PDF in a fresh browser tab or device to confirm the password works before sending it to recipients.
Quick answers to common questions about this tool.
Upload once and instantly jump between convert, merge, split, compress, watermark, encrypt, and extract workflows. Faster docs, less friction.
No account needed. No software to install. Just upload, set a password and download — completely free.
