Bytescout Watermarking SDK allows .NET developers to easily add watermarks to image files such as JPG, PNG, and GIF. These watermarks can include text, stamps, annotations, logos, and EXIF text macros, and can be added directly to desktop or web applications.

One of the standout features of Bytescout.Watermarking SDK is its royalty-free distribution. It's a great option for developers looking for an economical way to mark their images with their logo or branding. And for those who prefer full control, there's an option for full source code licensing available.
The SDK also comes with a range of customizable presets, including Simple Text, Text Annotation, Logo Image, Logo With Text, Text Fits Page, Vertical Text, FileName, DateTime stamp presets, and more. Users can adjust the transparency of their text and logo images and personalize their font settings, location, rotation, margins, and other details to ensure that the watermark is just as they want it.
Another great feature of Bytescout.Watermarking SDK is its support for batch watermarking for image files in one go. It includes an image resizing option, which you can use to resize and protect your images in a single pass. You can also add effects to pictures to improve their protection.
For web applications, Bytescout.Watermarking SDK is a great asset, providing the ability to process pictures using stream-to-stream operations. This feature works perfectly with applications that use images from streaming sources.
Lastly, this software also supports EXIF and picture file information macros, allowing you to add metadata to your image files. Input and output work seamlessly with JPEG, TIFF (including CCITT b/w documents), GIF, and PNG image formats.
Overall, Bytescout.Watermarking SDK delivers a robust set of features that make it an excellent choice for developers looking for a simple and practical image watermarking solution.
Version 3.00.190:
Watermarking images in .NET improved;
improved support for ActiveX interface on Windows x64 versions;
improved support of JPG images;
minor bug-fixes.
Version 1.30:
new watermark types: Stamp, StampFitsPage, StampFitsPageDiagonal, TiledText, TiledTextVertical, TiledTextDiagonal
minor bug-fixes and improvements
new examples and updated documentation
Version 1.20:
new presets: FileName and DateTime presets
EXIF macros support added (see documentation and "Advanced Examples\EXIF macros\" topic
updated documentation, new samples
minor bug-fixes and improvements
Version 1.00: intitial release