FastCopy is a compact yet exceptionally powerful program meticulously engineered for the rapid copying and transfer of substantial files and directories. It achieves remarkable speed enhancements by employing proprietary algorithms that diverge from standard operating system methods, ensuring peak performance and efficiency.
This indispensable utility is a go-to solution for anyone who routinely handles large volumes of data and seeks maximum speed and reliability for their daily file management tasks. Beyond mere copying, FastCopy offers robust features like efficient resource management and specialized handling for problematic files, making it a comprehensive tool for advanced file operations.
In This Post
Power User Guide
Optimize Copy Speed with Buffer Size Adjustment
- Open FastCopy and click on Option > Main Settings.
- Navigate to I/O Settings.
- Adjust the Main Buffer Size (e.g., to 512 MB or higher for large files) for optimal performance.
Reason To Do This: Increasing the buffer size can significantly improve transfer speeds, especially when dealing with very large files or when copying between different drives, by allowing FastCopy to handle more data in each read/write operation.
Automate Backups with Sync Mode and Command Line
- In FastCopy, select your Source and Destination directories.
- Choose Sync (Size/Date) from the operation mode dropdown to synchronize folders, copying only new or modified files and deleting those removed from the source.
- For automation, use the command-line interface: fastcopy.exe /sync /auto_close “SourcePath” /to=”DestinationPath” and schedule it with Windows Task Scheduler.
Reason To Do This: Automating backups with sync mode ensures your destination folder always mirrors the source, saving time and disk space by only transferring necessary changes. Command-line integration allows for scheduled, hands-off data synchronization.
System Requirements
Minimum
- OS: Windows 7 (32-bit & 64-bit) or later
- Processor: Intel/AMD processor with basic support
- RAM: 512 MB
- Disk Space: Minimal disk space required for installation
Tech Specs
| Software Name | FastCopy |
|---|---|
| Version | 5.11.3 |
| License | Freeware |
| File Size | 4.93 MB |
| OS Support | Windows |
| Language | English, Japanese |
| Developer | Shirouzu Hiroaki |
| Homepage | https://fastcopy.jp/ |
| Changelogurl | https://fastcopy.jp/history.html |
| Last Updated | October 9, 2025 |
Key Features
- Super Fast Copying: FastCopy utilizes optimized algorithms, including parallel flow and a large adjustable intermediate buffer, to bypass standard Windows copying bottlenecks and deliver excellent performance. This is particularly beneficial for large files like ISO images and HD movies.
- Efficient Resource Management: By not relying on the Windows cache, FastCopy ensures optimal use of system resources. This minimizes its impact on other running processes, allowing for smooth multitasking without system lag.
- Specialized File Deletion: The program can effectively remove files that are typically undeletable using standard Windows system tools, providing a solution for stubborn file management issues.
- Long Path & Unicode Support: FastCopy seamlessly handles files with Unicode characters and path names that exceed the standard Windows length limits, which often cause errors in conventional tools.
- Verification Functionality: The software includes verification features that ensure reliable copying by comparing hash values between source and destination files, guaranteeing data integrity.
- Command-Line Support: FastCopy offers robust command-line interface support, enabling users to automate file transfer tasks through scripts and batch files for increased efficiency.
- Portable Operation: Users have the option to run FastCopy as a portable application, meaning it can be used directly from a USB drive without requiring a formal installation process.
Getting Started
Installation Steps
- Click the download button above to get the installer for your operating system.
- Locate the downloaded file (e.g., FastCopy5.11.3_installer.exe) and double-click to run the installer.
- Follow the on-screen installation wizard to complete the setup. You may also choose to extract the files for a portable version.
Compatibility: Compatible with Windows 7 and later versions, including Windows 10 and 11.
Fix Common Problems
- Issue: Installation fails → Solution: Run the installer as administrator to ensure necessary permissions.
- Issue: Slow copying speeds → Solution: Adjust the buffer size in FastCopy settings or ensure no other resource-intensive processes are running.
Questions & Answers
Is FastCopy free to use?
Yes, FastCopy is available as freeware for personal use. There is also a Pro version that offers additional features and licensing for workplace environments.
What operating systems are compatible with FastCopy?
FastCopy is primarily designed for Windows operating systems, supporting versions from Windows XP through Windows 11.
How does FastCopy achieve faster file transfer speeds?
FastCopy achieves its speed by using optimized algorithms, multi-threaded read/write operations, and direct I/O, bypassing the standard Windows cache. It automatically selects the best method based on whether source and destination are on the same or different drives.
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