# Star Watermark

> Star Watermark provides offline watermarking software for photos, PDFs, and videos on Windows and macOS, with AI upscaling capabilities up to 4x. All processing is done locally for maximum privacy.

Star Watermark offers a suite of tools for adding watermarks to various media formats:
- Photo Watermark: Add text or image watermarks to photos in batch mode
- PDF Watermark: Securely watermark PDF documents with customizable templates
- Video Watermark: Apply watermarks to video files while preserving quality
- AI Upscaling: Enhance image resolution up to 4x using local AI models

All processing is performed offline to ensure user privacy with no file uploads required.

## Documentation

- [Main Website](https://star-watermark.com/): Home page with product overview and features
- [Blog Index](https://star-watermark.com/blog/index.html): Tutorials and guides on using Star Watermark tools
- [Photo Watermark for Mac](https://star-watermark.com/index.html): Detailed information about the macOS photo watermarking tool
- [PDF Watermark for Mac](https://mac-pdf-watermark.star-watermark.com/): Information about the macOS PDF watermarking tool
- [Photo Watermark for Windows](https://star-watermark.com/star-watermark-win.html): Detailed information about the Windows photo watermarking tool
- [PDF Watermark for Windows](https://win-pdf-watermark.star-watermark.com/): Information about the Windows PDF watermarking tool
- [Video Watermark for Windows](https://pc-video-watermark.star-watermark.com/): Information about the Windows video watermarking tool

## Tutorials

- [How to Upscale Images with Star Watermark AI](https://star-watermark.com/blog/how-to-upscale-images-with-star-watermark-ai.html): Guide to using AI upscaling features
- [How to Convert Images to PDF with Star PDF Watermark](https://star-watermark.com/blog/how-to-convert-images-to-pdf-with-star-pdf-watermark.html): Instructions for creating PDFs from images
- [How to Batch Compress Images with Star Watermark](https://star-watermark.com/blog/how-to-batch-compress-images-with-star-watermark.html): Tutorial on reducing image file sizes
- [Batch Watermark Tutorials](https://star-watermark.com/batch-watermark-tutorials.html): Comprehensive guide to batch watermarking
- [How to Use Star Watermark for Mac](https://star-watermark.com/how-to-use-star-watermark-for-mac.html): Basic usage instructions for macOS
- [How to Register Images PDF Watermark](https://star-watermark.com/how-to-register-images-pdf-watermark.html): Registration process guide

## Support

- [Contact Us](https://star-watermark.com/contact-star-watermark.html): Contact information and support form
- [FAQ](https://star-watermark.com/how-to-use-star-watermark-for-mac.html): Frequently asked questions
- [Cancellation & Refund Policy](https://star-watermark.com/cancellation-refund-policy.html): Information about refunds and cancellations

## Legal

- [Privacy Policy](https://star-watermark.com/privacy.html): Privacy policy details
- [Terms of Service](https://star-watermark.com/terms.html): Terms and conditions of use
- [EULA](https://star-watermark.com/star-watermark-end-user-license-agreement.pdf): End User License Agreement