Compare documents Leave feedback

Change detection algorithms of GroupDocs.Comparison allow you to detect changes in different document parts and blocks:

• Text blocks - paragraphs, words and characters
• Tables
• Images
• Shapes etc.

GroupDocs.Comparison highlights detected changes with different colors:

• Added – blue 
• Modified – green
• Style – green
• Deleted – red

You can customize the changes styling scheme using different formatting - italic, bold, underlined, strike-through, etc.

To compare two documents, follow these steps:

1. Instantiate the Comparer object with the source document path or stream.
2. Call the add() method and specify the target document path or stream.
3. Call the compare() method.

The following code snippets show how to compare two documents:

const comparer = new groupdocs.comparison.Comparer(sourcePdfPath)
comparer.add(targetPdfPath);
comparer.compare(resultPdfPath);

The output file is as follows:

const comparer = new groupdocs.comparison.Comparer(new FileInputStream(sourcePdfPath))
comparer.add(new FileInputStream(targetPdfPath));
comparer.compare(resultPdfPath);