Protect PDF
Add password protection to PDF files for free.
Upload your PDF to protect pdf
Drag & drop a PDF, or click to browse
PDF files only · Max 50 MB
Did you know? You can double-click any text in the editor to edit it directly. PDFino automatically matches the original font style!
Add password protection to PDF files for free. Encrypt your documents with a secure password. Browser-based encryption — your files never leave your device.
How to Use Protect PDF
Upload
Select your PDF files from your device or drag and drop them into the upload area.
Process
Wait a few seconds while our engine processes your file securely.
Download
Once finished, download your result directly to your device with 100% privacy.
Privacy Information
This tool runs 100% locally in your browser. Your files are never uploaded to any server. Your privacy is guaranteed.
Read full policy →Secure Your PDFs With Password Encryption
Protect sensitive PDF documents with password encryption before sharing them. PDFino encrypts your PDF locally in your browser using industry-standard AES encryption. Set a password that recipients must enter to view the document. Perfect for protecting contracts, financial records, medical documents, and any confidential information. Since encryption happens on your device, your unprotected document never travels over the internet.