Image Viewer - Add text overlay over images

GroupDocs.Viewer provides feature that allows to add text overlays over images. This feature is useful if you want to add selectable text over the image or implement a text search in image-based rendering.

Please note that due to Image Viewer’s architecture rendering results with text extraction enabled and disabled are different. 

The ExtractText  property of PngViewOptions (or ExtractText  property of JpgViewOptions) class enables you to render document to display with text. 

This example demonstrates how to render document for display with text.

            using (Viewer viewer = new Viewer("sample.docx"))
            {
               	PngViewOptions viewOptions = new PngViewOptions();
                viewOptions.ExtractText = true;
                viewer.View(viewOptions);
            }

More resources

Advanced Usage Topics

To learn more about document viewing features, please refer to the advanced usage section.

GitHub Examples

You may easily run the code above and see the feature in action in our GitHub examples:

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.