Protect PDF
Encrypt sensitive PDF documents with secure password protection. Configure custom permissions for printing and copying directly in your browser.
Click to choose a file or drag and drop
Supported types: .pdf, application/pdf (Max: 50 MB)
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100% free, unlimited, and private in-browser processing
Strong client-side encryption
Encrypt your PDF with user and owner passwords. All encryption calculations happen in your browser without uploading files to any external server.
Granular permission controls
Control whether recipients can print high-resolution copies, copy text and images, or modify document annotations.
How to protect and encrypt PDF files online
- Upload your PDF document.
- Enter a secure password and confirm it.
- Select your desired security permissions.
- Click 'Protect & Encrypt PDF' and download your secured file.
Frequently Asked Questions
Is my password sent to your servers?
No. Everything runs 100% in your browser. No passwords or files are ever transmitted.
What encryption standard is used?
Standard Adobe Acrobat compatible PDF security specifications.
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