Adding image watermarks Leave feedback
GroupDocs.Watermar API supports adding the following image file types as image watermark:
- Bmp;
- Png;
- Gif;
- Jpeg.
Following code snippet shows how to add ImageWatermark to a document. If the document consists of multiple parts (pages, worksheets, slides, frames etc), the watermark will be added to all of them.
advanced_usage.adding_image_watermarks.AddImageWatermark
// Specify an absolute or relative path to your document. Ex: "C:\\Docs\\presentation.pptx"
Watermarker watermarker = new Watermarker("presentation.pptx");
// Use path to the image as constructor parameter
ImageWatermark watermark = new ImageWatermark("watermark.jpg");
// Add watermark to the document
watermarker.add(watermark);
watermarker.save("presentation.pptx");
watermark.close();
watermarker.close();
You can also use a stream of the image to initialize ImageWatermark instance as shown in below example.
advanced_usage.adding_image_watermarks.AddImageWatermarkUsingStream
// Specify an absolute or relative path to the watermark image. Ex: "C:\\Docs\\watermark.jpg"
FileInputStream watermarkStream = new FileInputStream("watermark.jpg");
Watermarker watermarker = new Watermarker("image.png");
// Use stream containing an image as constructor parameter
ImageWatermark watermark = new ImageWatermark(watermarkStream);
// Add watermark to the document
watermarker.add(watermark);
watermarker.save("image.png");
watermark.close();
watermarker.dispose();
watermarkStream.close();
WarningImageWatermark class implements Closable interface. Therefore, it is necessary to call close() method when you are done working with the watermark.
For the advanced use of image watermark properties please check the following article about text watermarks, however, the same techniques will work for image watermarks as well:
Was this page helpful?
Any additional feedback you'd like to share with us?
Please tell us how we can improve this page.
Thank you for your feedback!
We value your opinion. Your feedback will help us improve our documentation.
