Star Watermark
Picture and PDF watermark tools on Windows PC and macOS
Support Center
Support Center
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Getting Started
Purchase and Register
- How to Register Star Watermark for Mac? (pictures and pdf)
- I don't receive confirmation email including register code.
- Why invalid register name and code?
- Compare Professional and Ultimate edition of Star Watermark for Mac
- Compare Professional and Ultimate edition of Star PDF Watermark for Mac
- Compare Pro and Ultimate edition of photos watermark for windows
- Compare Pro and Ultimate edition of pdf files watermark for windows
Usage Guidelines
Common for Pro and Ultimate Edition
- How to add Text Watermarks to photos and pdf files?
- How to add Image Watermarks to photos and pdf files?
- How to auto scale watermark's dimension according to pictures with different dimension?
- New How to resize JPEG pictures to desired size
- New How to add watermark on HEIC, HEIF Images and convert to jpg?
- How to keep exif metadata info of JPEG pictures?