Protect PDF
Apply modern standard PDF password encryption. Protect confidential documents, financial statements, and research with zero cloud risk.
Protect PDF
Apply modern standard PDF password encryption. Protect confidential documents, financial statements, and research with zero cloud risk.
How to Use Protect PDF
- Step 1: Upload PDF
- Step 2: Enter a strong password and confirm
- Step 3: Download encrypted document
Technical Specifications & Limitations
- Maximum file size: 50 MB.
- Password cannot be recovered if forgotten, as encryption keys are not stored anywhere.
- Compatible with Adobe Acrobat, Apple Preview, and modern web browsers.
Troubleshooting Common Issues
⚠Password prompt appears when opening the downloaded file.
This is expected behavior; enter the password you specified during encryption to unlock viewing.
⚠Password is rejected during setup.
Ensure both password input fields match exactly and contain at least 4 characters.
🔒Privacy & Security Guarantee
All PDF processing for Protect PDF occurs 100% inside your local web browser sandbox using WebAssembly and client-side JavaScript. Your documents, images, and data are never transmitted over the internet or saved to external servers. Full confidentiality is preserved for sensitive scientific research, financial records, and legal contracts.
Frequently Asked Questions
Does SciHive have a master password or backdoor?
No. The document is encrypted on your machine. We have no way to unlock your document if you forget your password.
Can I unlock the document later?
Yes, using our 'Unlock PDF' tool and your valid password.
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