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Add password protection to PDF
Free outputs include a small "Processed by Konomic" footer. Upgrade to remove →
Drag & drop files here, or click to browse
PDF · up to 50 MB (free)
Upload your PDF
Enter a password
Click 'Protect PDF'
Download the encrypted file
Secure your PDF documents by adding password protection. Only people with the password can open the file.
We use AES-256 encryption, the same standard used by banks and governments.
See how Konomic compares to popular protect pdf tools: