Context Menu Hash Checker

A modern, lightweight, native Windows Forms utility that integrates directly into the Windows right-click context menu. This tool allows you to instantly calculate and verify file checksums (MD5, SHA1, SHA256, SHA384, SHA512) with a clean UI that automatically adapts to your system's Light or Dark theme.

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📥 Download Latest

📸 Screenshots

<p align="center"> <img src="images/setup.png" width="45%" alt="Setup and Installer" /> <img src="images/compare.png" width="45%" alt="Hash Calculation and Verification" /> <br/><br/> <img src="images/context_menu.png" width="70%" alt="Context Menu Integration" /> </p>

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🔥 Features

• Instant Context Menu Integration: Calculate hashes for any file directly from the Windows right-click menu.
• All Major Algorithms: Full support for MD5, SHA1, SHA256, SHA384, and SHA512 checksums.
• Self-Installing & Portable: Acts as its own setup launcher. Simply double-click the .exe to cleanly add or remove registry keys without needing a separate installer.
• Dynamic Theme Support: Automatically reads the Windows Registry to adapt its UI colors to your system's Light or Dark mode.
• Large File Optimization: Uses a 1MB buffer limit and SequentialScan to provide blazing-fast disk read speeds, even for massive video files or disk images.
• Native & Lightweight: Built entirely with vanilla Windows Forms (C#), ensuring zero bloat and instant startup times.

🚀 How to Run & Install

Option 1: Using the Executable (Recommended)

1. Download the latest HashChecker.exe from the Releases Page.
2. Double-click the executable to open the Setup Launcher.
3. Click "Install to Context Menu".
4. Right-click any file in Windows Explorer, go to Checksum, and select your desired algorithm!

Option 2: Compiling from Source

1. Download or clone the source code.
2. Ensure you have the .NET SDK installed.
3. Run the included compile.cmd script to automatically clean artifacts and build a self-contained, single-file executable.

🛠️ Usage

1. Right-click on any file you want to verify.

2. Navigate to the Checksum menu.

3. Click the algorithm you wish to calculate (e.g., SHA256).

4. Paste your target hash into the lower text box. The program will instantly compare the values and notify you with a "Match" or "Mismatch" status.

📄 License

This project is licensed under the MIT License.

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Created by @osmanonurkoc