Protect PDF
Encrypt a PDF with an opening password and optional permission restrictions.
Password Protect PDF Files Online
Use Protect PDF to add a password before sending contracts, invoices, reports, forms, or private records. Upload your file, set a strong password, and download an encrypted PDF.
Basic mode adds an access password that readers must enter before opening the document. Advanced mode can also restrict printing, copying, editing, comments, form filling, accessibility extraction, and document assembly.
Permission restrictions use a separate password so document controls can stay separate from the password used to open the file. Standards-compliant PDF readers honor these settings, though some applications may ignore document restrictions.
Files are processed securely and stored only for a short time so you can download the protected PDF.
When to Protect a PDF
Sensitive records
Add an opening password before sharing financial, medical, legal, or personal documents.
Client documents
Send proposals, invoices, and contracts with a password for the intended recipient.
Internal files
Limit copying, printing, or editing on policies, reports, and reference documents.
Controlled sharing
Keep document access and permission controls separate with two different passwords.
Frequently Asked Questions
Can I add a password to open a PDF?
Yes. Basic mode encrypts the PDF with an access password.
Can I restrict printing or copying?
Yes. Advanced mode can restrict printing, copying, editing, comments, form filling, accessibility extraction, and document assembly.
Why do I need a separate permission password?
A separate permission password keeps editing and permission changes separate from the password used to open the file.
Will every app enforce the restrictions?
Most standards-compliant PDF readers do, but some applications may ignore PDF permission settings.