To split, right-click a file, select 7-Zip > Add to archive , and choose a size under "Split to volumes, bytes". You can even split files without adding any compression if speed is your priority.
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It splits files into numbered parts (.001, .002, etc.) that are easily reassembled with the built-in "Join" function. 3. 7-Zip & WinRAR: The Compression Powerhouses To split, right-click a file, select 7-Zip >