How to get file type and pages count

Introduction

GroupDocs.Viewer for Java API enables you to get file type and pages count with getViewInfo(…) method that returns a ViewInfo object.

For the following document types GroupDocs.Viewer provides additional information:

Get file type and pages count from file 

    Viewer viewer = new Viewer("sample.pdf");
    ViewInfoOptions viewInfoOptions = ViewInfoOptions.forHtmlView();
    ViewInfo viewInfo = viewer.getViewInfo(viewInfoOptions);

    System.out.println("Document type is: " + viewInfo.getFileType());
    System.out.println("Pages count: " + viewInfo.getPages().size());

Get file type and pages count from stream

    Viewer viewer = new Viewer(new FileInputStream("sample.pdf"));

    ViewInfoOptions viewInfoOptions = ViewInfoOptions.forHtmlView();
    ViewInfo viewInfo = viewer.getViewInfo(viewInfoOptions);

    System.out.println("Document type is: " + viewInfo.getFileType());
    System.out.println("Pages count: " + viewInfo.getPages().size());

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 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.