Protect PDF
Encrypt a PDF with an opening password and optional permission restrictions.
How to Password Protect a PDF — Step by Step
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1
Finalize the document first
Make all edits — adding text, signatures, or page numbers — before protecting. Editing a protected PDF requires removing the password first.
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2
Upload your PDF and set a password
Click the upload area or drag your PDF onto it. Enter a strong password (mix of letters, numbers, and a symbol, at least 8 characters). Use Basic mode for an open password or Advanced mode for permission restrictions.
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3
Download and share the password separately
Download the protected PDF. Send the password via a different channel — text message or a separate email — not in the same message as the file.
Open Password vs. Permissions Password
PDF files support two distinct password types. An open password (user password) locks the entire document — the recipient must enter it before they can view any content. This is appropriate for financial records, HR documents, contracts, or personal information you are sharing with a specific person.
A permissions password (owner password) allows anyone to open and read the document, but restricts specific actions such as printing, copying text, or editing. This is used when the content should be freely readable but the format should be preserved — for example, distributing a price list or internal policy document.
After protecting a document, keep an unprotected master copy in a secure personal location. If you forget the password, there is no recovery mechanism. Read the complete PDF protection guide for password strength tips and common use cases.
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.