WinSid iSplitter

WinSid iSplitter is capable of joining and splitting files. This is an approachable software application that features two cut methods. It doesn't include complex options or configuration settings, making it accessible to all types of users.
It's packed in a clean and intuitive interface, where the main window acts like a menu for picking the type of operation between chopping and merging files.

Split files into equal parts

In order to trim a file, it's necessary to point it out using the file browser, select the split method, and establish the destination of the smaller files. You can cut the file in equal parts by entering the number of output files, or by specifying the amount of each volume in bytes (the last piece will have the smallest size).
The new files have a number appended to their name to mark the file parts, and they are unusable in this form. You can spread them across multiple devices to transfer them to another computer, then use WinSid iSplitter to join all volumes into a single, usable file.

Merge files by selecting the first part

Worth noting is that the original file remains untouched after submitting it for a trimming operation. Furthermore, the tool auto-overwrites any files with existing names in the target folder.
Joining files in a very simple task, since all you have do is indicate the first part along with the output directory for reconstructing the original file. The program identifies the remaining file pieces automatically, so make sure they are stored in the same folder.

Evaluation and conclusion

We haven't encountered any difficulties in our tests; the tool didn't hang, crash or prompt error messages. Unsurprisingly, it carried out tasks fast while remaining light on resources usage. To conclude, WinSid iSplitter offers a simple and effective method for cutting and merging files.