
SysTools PDF Watermark 5.1 is a professional watermarking utility that enables users to add customized text, image, logo, or date watermarks to PDF files in bulk. Designed for corporate and personal use, it ensures document authenticity and brand consistency while maintaining the integrity and quality of your original files.
Key Features of SysTools PDF Watermark
- Add text, image, or date/time watermarks to PDF documents
- Batch watermark multiple PDF files simultaneously
- Support for font style, color, size, opacity, and rotation customization
- Option to apply watermarks to selected pages or page ranges
- Preserves the original formatting and structure of the PDF
- Does not require Adobe Acrobat installation
- Compatible with password-protected and secured PDFs
- Simple and intuitive interface suitable for all users
What’s New in 5.1
- Improved rendering engine for high-resolution watermarks
- Enhanced compatibility with Adobe Acrobat DC and PDF 2.0 standards
- Added support for transparent PNG watermark overlays
- Optimized batch processing speed and memory handling
- Minor bug fixes and overall performance improvements
Install Guide + FAQ
Click here for installation instructions and frequently asked questions
System Requirements
- OS: Windows 11 / 10 / 8.1 / 7 (32-bit or 64-bit)
- CPU: Intel/AMD dual-core processor
- RAM: 2 GB minimum (4 GB recommended)
- Disk Space: 200 MB available
- Display: 1024×768 resolution or higher
Build Highlights
Software: SysTools PDF Watermark 5.1
Type: Official Windows Installer (Silent RePack)
Status: Clean, Tested
Size: ~63 MB installer
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