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Tool location: /pdf/protect
Password protection encrypts your PDF so only people with the correct password can open it. This is essential for protecting sensitive documents like financial records, contracts, or personal information. The encryption happens in your browser, ensuring your password is never transmitted online.
Click "Select PDF File" or drag and drop your PDF into the upload area. Make sure the document is not already password protected.
Create a secure password for your document:
Re-enter the password to confirm you typed it correctly. The passwords must match exactly.
Click "Protect PDF" to encrypt your document. The encryption process runs entirely in your browser.
Click "Download" to save your encrypted PDF file. Anyone who tries to open this file will need to enter the password.
Share the password with authorized recipients through a separate channel (phone, text, separate email) - never in the same message as the PDF.
Uses industry-standard encryption to secure your documents.
All encryption happens locally. Your password never leaves your device.
PDFs are encrypted immediately without server processing.
Protected PDFs can be opened in any standard PDF reader.
Protect documents of any size without restrictions.
Visual feedback helps you create a strong password.
CRITICAL: There is no password recovery. If you forget the password, the document cannot be unlocked.
Write down or securely store the password before protecting the document.
PDF password protection is strong but not unbreakable. For top-secret documents, consider additional security measures.
Already protected PDFs cannot be re-protected. Remove existing protection first.
A: Unfortunately, there is no way to recover a forgotten password. The encryption is designed to be secure, which means even we cannot access protected documents. Always keep a secure record of your passwords.
A: PDF encryption is strong and widely trusted for business documents. With a strong password (12+ characters, mixed types), breaking the encryption would be extremely time-consuming even with powerful computers.
A: Once opened with the correct password, the PDF can be viewed and potentially edited depending on the PDF reader used. To prevent editing, you would need additional permission settings.
A: No. The password only exists in your browser during the encryption process. It is never stored, transmitted, or saved anywhere by our tool.
A: No. You must first remove the existing protection before applying new password protection.
A: Yes, slightly. The encryption adds a small amount of data, but the increase is typically minimal (a few KB).