@alinad,
Thanks for taking interest in our API.
GroupDocs.Viewer is flexible enough to be integrated with the web applications as well as the desktop applications. In fact, GroupDocs.Viewer allows you to render the document pages in the form that can be easily displayed in your front end application. The API provides two ways to render the document:
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HTML based rendering: In HTML based rendering, the API generates the HTML representation of each page of the source document. You can easily manipulate the HTML content of each page and save it as an HTML file.
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Image-based rendering: In image-based rendering, the API converts each page of the document into an image (PNG, JPEG or BMP). You can easily save the image to your desired location and display it in your application to view the content of the document.
Hence, you can view the rendered HTML pages or the images in your front end application.
Yes, you can get the Temporary License that enables you to evaluate all the features of the API without any limitations.
Yes, GroupDocs.Viewer can easily be used in a desktop application in a similar way as it is used in a web application.
Please share with us the platform (.NET or Java) in which you are interested you use the API so that we can provide you the relevant useful resources.