File Splitter and Joiner — Split Large Files on Windows Free
Split and join large files quickly and securely with The Fastest File Splitter and Joiner. Ideal for backups, it offers password protection and easy access via a right-click menu.
With the massive file sizes we deal with today, transferring them can take a long time. Despite its somewhat presumptuous name, The Fastest File Splitter and Joiner is excellent for breaking data into manageable pieces (that’s ‘bite’ with an ‘i’ to clarify any spelling confusion).
It's ideal for tasks like backing up large amounts of data to DVD, as it allows you to quickly split files into smaller parts. You just specify the file size and the save location, and you can optionally add a password.
With a single click, the data is divided. Rejoining the data is just as simple, and if password protection is enabled, you’ll need to enter the password to proceed.

For extra convenience, all program options are accessible from a right-click context menu.
Although it’s very fast, I can't confirm that The Fastest File Splitter and Joiner truly lives up to its name.
Bug fixes include auto drop shadow effects, drag and drop behaviors, and the FFSJ Shell Context Menu on Vista. FFSJ now uses the Segoe UI font on Windows Vista.
Changes
Bug fixes: auto drop shadow effects, drag and drop behaviors, and the FFSJ Shell Context Menu on Vista. FFSJ now uses the Segoe UI font on Windows Vista.
Pros
- Splits files very quickly
- Allows for password protection
- Easily accessible
Cons
- Unable to verify if it is truly the fastest
Frequently Asked Questions
Is File Splitter and Joiner free to use on Windows?+
Is File Splitter and Joiner safe to install?+
Does File Splitter and Joiner work on Windows 11?+
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