.NET APIs for document and image format conversion

Transform documents and images to new formats within your .NET applications that target Windows Forms, ASP.NET, WPF and WCF Services

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.NET document conversion API

GroupDocs.Conversion for .NET


GroupDocs.Conversion for .NET is an advanced document conversion API developed to convert document formats within any .NET application. This feature-rich API empowers you to work with document conversion operations, back and forth over with 50 documents and image file formats. Using the document converter API is very simple as it used just one method with set of options to convert between different formats.

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Advanced Document Conversion API Features



Over 50 file formats supported


Fastest on-the-fly conversion API


High quality output files


Progress callbacks for ASP.NET apps


Batch conversion of multiple files


Specific range conversion while converting cell's document


Report conversion progress


Abstract storage and cache


Auto-detect source type for stream input


Get available document save options


Easy integration

How API Works

  • Gets the file path as input.
  • Gets the file storage path.
  • Converts the document of input file.
  • Performs conversion operation and return the output (As Path, Stream) (if required)

Documents conversion - C#

 // Setup Conversion configuration and Initailize ConversionHandler
ConversionConfig config = new ConversionConfig();
config.StoragePath = @"D:\storage\"; 
 // Initailize ConversionHandler
ConversionHandler conversionHandler = new ConversionHandler(config);
// Convert and save converted document
var convertedDocumentPath = conversionHandler.Convert("sample.pdf", new WordsSaveOptions {  });
convertedDocumentPath.Save("result-" + Path.GetFileNameWithoutExtension("sample.pdf") + ".doc");

Convert Between Document and Image Formats

Using native .NET document conversion API – programmers can employ just a single method to convert between 50 documents and image file formats within their ASP.NET, C# and .NET applications.

Support and Learning Resources


GroupDocs.Conversion offers document automation APIs for other popular development environments as listed below: