Add text watermark

GroupDocs.Viewer enables you to apply a watermark on the output pages (HTML / Image / 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 setWatermark(…) property of class HtmlViewOptions, PngViewOptions, JpgViewOption or PdfViewOptions;
• Call view(…) method.

The following code sample shows how to apply the watermark to the output pages.

    try (Viewer viewer = new Viewer("sample.docx")) {
        HtmlViewOptions viewOptions = HtmlViewOptions.forEmbeddedResources();
        viewOptions.setWatermark(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 Java examples, plugins, and showcase
• 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
• GroupDocs.Viewer for .NET samples, plugins and showcase
• Document Viewer for .NET MVC UI Example 

Free Online App

Along with full-featured Java 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.