You can use this program to split large file into small chunks which are easy to be sent and stored, while File Joiner allows you to join these split parts together so that the original file is restored. File-SJ can optimize disk-cache and memory usage, this makes File-SJ 3-5 times faster than HJ-Split, WinSplit, MasterSplitter in both splitting and joining tasks. Of course, it is much faster than any compression program. Simple: File-SJ works well on all Windows platforms. File-SJ standard doesn´t need any requirement of installations or complicated DLLs. File-SJ professional has only one simple installation package for integrating File-SJ into shell context menu.

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