
A secure PDF viewer enforcing DRM controls to protect, restrict, and manage access to PDF files, available as installed or zero-installation software.
Vendor
Locklizard
Company Website




Safeguard Secure PDF Viewer is a free application for viewing PDF files protected by Locklizard's DRM technology. It enforces document access controls such as viewing, printing, copying, and expiry, ensuring only authorized users can access protected content. Available as both installed software (Windows, Mac, iOS, Android) and zero-installation options (browser-based and USB), it prevents unauthorized distribution and manipulation of sensitive documents.
Key Features
Installed and Zero-Installation Viewers
- Available as an installable app for major OS or as a browser/USB viewer1.
- Supports offline and online document access depending on publisher settings.
Strong DRM Enforcement
- Controls viewing, printing, copying, and document expiry.
- Locks documents to authorized devices, preventing sharing.
No Passwords or Plug-ins
- Access is managed via licensing, not passwords, minimizing risk.
- No browser plug-ins or JavaScript, reducing attack vectors1.
Security and Privacy
- Decrypts content only in memory, never writes temporary files to disk.
- Prevents screen grabbing, printing to file, and unauthorized modifications.
Multi-Platform Support
- Works on Windows, Mac, iOS, Android, and any OS via web viewer.
Benefits
Comprehensive Document Protection
- Ensures only licensed users access protected PDFs, reducing data leakage risk.
- Persistent enforcement of controls throughout the document lifecycle.
Ease of Use and Deployment
- Simple licensing and activation process for end users.
- Zero-installation options for quick access without software installation.
Reduced Administrative Overhead
- No passwords to manage, share, or forget.
- Automated enforcement of publisher-defined controls