StuffIt Segment file
File type: Various data file
A .segn file is a segment of a StuffIt archive.
It belongs to StuffIt for Microsoft Windows and is intended to be used together with the other segments from the same archive.
File type category:
Various data file
Date updated: September 27, 2026
StuffIt Segment files are created when StuffIt splits an archive into multiple parts. Each segment contains part of the archive data, so a single .segn file is not normally a complete, independently usable archive.
The segments are associated with StuffIt, archive software originally developed by Aladdin Systems and later maintained by Smith Micro. StuffIt for Microsoft Windows can reassemble the segments and extract the files stored in the original archive.
This is a legacy format that is now uncommon. The complete set of segments is required to recover the archive reliably.
Keep all segments from the same archive together in one folder and open them with StuffIt for Microsoft Windows. The program should reassemble the segments and provide access to the archived files.
A .segn file generally cannot be opened meaningfully on its own; if a segment is missing or damaged, the archive may not be recoverable.
A SEGN file is a part of a segmented archive rather than a normal standalone document, so it is not usually converted directly.
Use StuffIt for Microsoft Windows to reassemble and extract the archive, then create a new archive in a different format if required.
Software applications that handle other tasks involving segn files:
Microsoft Windows
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