The application is roughly 300 KB , making it perfect for portable drives. How to Use HJSplit 1. Splitting a Large File HJSplit - Download

The "full" version of HJSplit is entirely free and portable, meaning it requires no installation—you simply run the single .exe file.

Includes a Compare tool to verify if two files are identical and a Checksum generator (MD5) to ensure data integrity during the split/join process.

It can handle files over 100 GB in size.

HJSplit is a legendary, ultra-lightweight freeware utility designed to split large files into smaller chunks (e.g., .001 , .002 ) and rejoin them into their original form. Despite its "old-school" appearance, it remains a go-to tool for users needing to bypass email attachment limits, fit large data onto smaller storage media like DVDs or USB sticks, or upload massive archives to file-sharing sites.

Files split on one platform (like Windows) can be rejoined on others, such as Linux or macOS, using compatible versions.