Compare multiple documents

NOTE: This feature is available only for Word documents, PowerPoint and Open Document presentations.

GroupDocs.Comparison allows to compare more that 2 documents.

The following are the steps to compare multiple documents.

• Instantiate Comparer object with source document path or stream;
• Call Add method and specify target document path or stream. Repeat this step for every target document;
• Call Compare method.

The following code sample shows how to compare multiple documents with specific options.

using (Comparer comparer = new Comparer("source.docx")
{
	comparer.Add("target1.docx");
    comparer.Add("target2.docx");
    comparer.Add("target3.docx");
    comparer.Compare("result.docx");
}

using (Comparer comparer = new Comparer(File.OpenRead("source.docx"))
{
	comparer.Add(File.OpenRead("target1.docx"));
    comparer.Add(File.OpenRead("target2.docx"));
    comparer.Add(File.OpenRead("target3.docx"));
    comparer.Compare(File.Create("result.docx"));
}

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

• GroupDocs.Comparison for .NET examples, plugins, and showcase
• GroupDocs.Comparison for Java examples, plugins, and showcase
• Document Comparison for .NET MVC UI Example
• Document Comparison for .NET App WebForms UI Modern Example
• Document Comparison for Java App Dropwizard UI Modern Example
• Document Comparison for Java Spring UI Example

Along with full-featured .NET library we provide simple, but powerful free Apps.
You are welcome to compare your DOC or DOCX, XLS or XLSX, PPT or PPTX, PDF, EML, EMLX, MSG and other documents with free to use online GroupDocs Comparison App.