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PDF Security
Protect PDF
Encrypt a PDF with an open password.
✓ Secure processing✓ No signup✓ High-fidelity output✓ Page preview
1Select files2Preview & adjust3Process & download
Choose PDFs
Drag and drop here, or click to browse your device.
PDF-only actions stay on this device. Office conversions use the protected Python document engine.New files are added without deleting your current selection.
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About this tool
Protect PDF without complicated software
Protect PDF: Apply PDF password encryption inside your browser so the password and document do not need to be uploaded to this server.
Protected conversion
Browser-capable PDF actions remain local. Document conversions use an isolated Python process and temporary files are deleted automatically.
Direct download
The finished file is returned directly to this page for download after processing.