Add a password to your PDF
Our Protect PDF tool helps you secure sensitive PDF documents by adding password protection. Once a password is applied, users must enter the correct password before opening the PDF file.
This feature is ideal for protecting contracts, invoices, financial records, business reports, personal documents and confidential information from unauthorized access.
Add a password to prevent unauthorized access.
Protect PDF files in just a few seconds.
Works on Android, iPhone, tablets and desktops.
No subscriptions or registrations required.
Your PDF files are processed securely and automatically removed after completion. We never access, store or share your documents with third parties.
Password protection prevents unauthorized users from opening sensitive documents. Businesses use PDF encryption to secure contracts, invoices, employee records and confidential reports.
Students, freelancers and professionals also use password-protected PDFs when sharing important documents through email or cloud storage services.
Yes. The tool is completely free to use.
Yes. We recommend using a strong password containing letters, numbers and symbols.
Yes. Use our Unlock PDF tool if you know the current password.
Absolutely. Files are automatically deleted after processing.
Yes. The tool works on smartphones, tablets and desktop computers.
No. Everything works directly from your web browser.