Choose your files
Select the supported files from your device, or drop them into the upload area.
Protect PDF
Encrypt a document with an opening password.
✓ Easy to use✓ No signup✓ Private file workspace
Choose your files
Select documents or drag and drop them here
PDF · up to 50 MB total
Your selected files 0
Use the arrows to change file order; remove files with ×.
Visual document editor
Load the preview, then click or drag to place your edit.
No edits added.
HOW TO USE THE PROTECT PDF TOOL
Customize the output
Upload the PDF, set a strong password and download the protected document.
Convert and download
Click Protect PDF, wait for processing to finish, and download your result. Open it to check the pages and layout.
About Protect PDF
Secure a PDF with a document opening password to limit unauthorized access.
Quality and privacy
PDF conversions vary depending on fonts, scanning quality, source layout and available server engines. Appearance-preserving exports use page images rather than individually editable text. Uploaded and generated files are kept in private temporary server storage, not inside SQL database tables. Downloads are temporary; completed downloads are removed after delivery when supported, with a scheduled cleanup as a safeguard. See our Privacy Policy.