Add text watermark
GroupDocs.Viewer enables you to add a watermark the output HTML/JPG/PNG/PDF.
Here is the recipe:
- Create instance of HtmlViewOptions class (or PngViewOptions, or JpgViewOption, or PdfViewOptions);
- Create a Watermark object and populate its properties;
- Assign Watermark object to HtmlViewOptions.Watermark (or PngViewOptions.Watermark, or JpgViewOptions.Watermark, or PdfViewOptions.Watermark) property;
- Call View method.
The following code sample shows how to apply the watermark to the output pages.
using (Viewer viewer = new Viewer("sample.docx"))
{
HtmlViewOptions viewOptions = HtmlViewOptions.ForEmbeddedResources();
viewOptions.Watermark = new Watermark("This is a watermark");
viewer.View(viewOptions);
}
More resources
GitHub Examples
You may easily run the code above and see the feature in action in our GitHub examples:
- GroupDocs.Viewer for .NET examples, plugins, and showcase
- GroupDocs.Viewer for Java examples, plugins, and showcase
- Document Viewer for .NET MVC UI Example
- Document Viewer for .NET App WebForms UI Modern Example
- Document Viewer for Java App Dropwizard UI Modern Example
- Document Viewer for Java Spring UI Example
Free Online App
Along with full-featured .NET library we provide simple but powerful free Apps. You are welcome to view Word, PDF, Excel, PowerPoint documents with free to use online GroupDocs Viewer App.