DiffApp

DiffApp is a free and open-source desktop utility built with WPF and .NET 9.

It is designed to provide high-precision text comparison and flexible merging capabilities, allowing developers to analyze and synchronize differences between two text sources with ease.

Note

This project is currently under development.

🚀 Main Features

• Dual View Modes: Switch between Split (Side-by-Side) and Unified views to visualize differences in the way that suits you best.

• High-Precision Highlighting: Choose between Word-level or Character-level highlighting to spot even the smallest changes.

• Flexible Merging: Interactively merge changes block-by-block from left-to-right or right-to-left to build the final result.

• Smart Comparison: Optional "Ignore Whitespace" toggle to focus only on meaningful code or text changes.

• Integrated Editor: Edit original or modified texts on the fly and re-run comparisons instantly.

🛠 Technology Stack

• Platform: Windows (WPF)

• Framework: .NET 9

• Engine: DiffPlex

• Architecture: MVVM (Model-View-ViewModel)

• Icons: Material Design Icons

📖 How to Use

1. Input Text: Paste or type your original text in the left panel and the modified version in the right panel.

2. Compare: Click the Find Difference button to generate the visual comparison.

3. Analyze & Merge:

   • Select a difference block to reveal merge controls.

   • Use the arrow buttons to move changes between sides.

   • Toggle Word Wrap or View Mode in the Settings panel for better visibility.

4. Export: Copy the final result back to your clipboard using the quick-copy buttons.

📄 License

This project is open-source and free to use.