Compare documents
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Changes detection algorithms used by GroupDocs.Comparison allows 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:
- Instantiate the Comparer object with source document path or stream.
- Call the add() method and specify target document path or stream.
- Call the compare() method.
The following code snippets show how to compare two documents:
try (Comparer comparer = new Comparer(sourcePdfPath)) {
comparer.add(targetPdfPath);
final Path resultPath = comparer.compare(resultPdfPath);
}
The output file is as follows:
try (Comparer comparer = new Comparer(sourceInputStream)) {
comparer.add(targetInputStream);
final Path resultPath = comparer.compare(resultOutputStream);
}
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