The File Append and Split Tool (FAST), developed by Boxer Software, is a lightweight utility designed to break massive files into smaller chunks and seamlessly merge them back together. Key Capabilities
Extreme File Size Support: It can handle massive datasets, supporting file sizes up to 16 exbibytes (roughly 16 million terabytes) on Windows NTFS file systems.
Universal Format Compatibility: Because it operates strictly as a binary file splitter, it works with any file type—including ZIP archives, videos (MPG, WMV, AVI), audio (MP3), and raw text documents—without risk of altering or corrupting the internal data.
Data Integrity: The tool recreates files exactly as they were, appending smaller pieces back together to ensure zero data loss. Core Use Cases
Bypassing Storage Limits: Breaking up large installer packages, ISOs, or media archives to fit onto physical media like DVDs, USB flash drives, or external storage formatted with stricter file limits.
Email & Cloud Transfers: Splitting heavy data attachments to easily slip under maximum email file transfer caps or cloud upload thresholds. Alternative Multi-Platform Options
While FAST is highly specialized, both Windows and Mac users frequently rely on alternative, globally compatible methods to split and append files across ecosystems:
Built-in Terminal Tools: Both Windows (via Git Bash) and macOS can natively use the command-line split function to slice files and the cat command to recombine them sequentially without needing third-party software.
7-Zip / Keka: Utilities like 7-Zip (Windows) and Keka (Mac) allow you to right-click large files to “Split Volume,” automatically compressing and dividing them into parts that can be easily unzipped back into the original file on either operating system.
If you are looking to manage a specific project, let me know:
What file extension / type you are working with (e.g., video, database, archive) The total size of the file
Your primary goal (e.g., emailing it, storing it on a USB, archiving it)
I can recommend the absolute fastest method or tool for your specific setup. Boxer Software – File Append and Split Tool
Leave a Reply