Compare multiple documents

GroupDocs.Comparison allows to compare more that 2 documents.

The following are the steps to compare multiple documents.

• Instantiate Comparer objectwith 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.

Compare multiple documents from local disk

Comparer comparer = new Comparer("C:\\source.pdf");
try {
    comparer.add("C:\\target1.pdf");
    comparer.add("C:\\target2.pdf");
    comparer.add("C:\\target3.pdf");
    comparer.compare("C:\\result.pdf");
} finally {
    comparer.dispose();
}

Compare multiple documents from stream

Comparer comparer = new Comparer(new FileInputStream("C:\\source.pdf"));
try {
    comparer.add(new FileInputStream("C:\\target1.pdf"));
    comparer.add(new FileInputStream("C:\\target2.pdf"));
    comparer.add(new FileInputStream("C:\\target3.pdf"));
    comparer.compare(new FileOutputStream("C:\\result.pdf"));
} finally {
    comparer.dispose();
}

More resources

GitHub Examples

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

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

Free Online App

Along with full-featured Java 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, MSGand other documents with free to use online GroupDocs Comparison App.

• Compare multiple documents protected with password
• Compare multiple documents with specific compare settings