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The Protect PDF tool allows you to secure your sensitive PDF documents with strong password encryption directly inside your web browser. Operating entirely within your browser sandbox, this utility handles the complete encryption process locally, ensuring your passwords and document contents never leave your device.
Complete Control Over Security Permissions
Our encryption engine supports standard PDF owner and user password security features to protect your files:
- User Password (Open Password): Setting a user password restricts file access, requiring anyone who opens the document to enter the designated password before viewing the contents.
- Owner Password (Permissions Password): Setting an owner password locks editing, printing, and content copying capabilities. This ensures unauthorized users cannot alter or duplicate your data.
- Lossless Security Integration: Because the document layers and embedded fonts are encrypted using native crypt protocols (RC4/AES equivalent structures) without rasterization, your document retains its original vectors and searchable texts.
100% Secure Client-Side Processing
Since the encryption engine runs directly inside your browser tab sandbox, your passwords and files are never transmitted over the network to a cloud server. Your security is maintained local and offline.