Files with SQD extension can also be found as saved messages from the Squish program for FidoNet.

There is one other file type using
the SQD file extension!

empty icon.sqd - Sysquake session data file

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SQD file extension - Squish message base file format

What is sqd file? How to open sqd files?

File type specification:

Various data file type icon Various data file type

The SQD file extension is also related to Squish program and used for its default message format. Squish is both the name of a FidoNet mail tossing application originally designed for DOS and OS/2, and the name of the primary mail storage format in which this application stores. Most likely old and no longer used format.

Help how to open SQD files:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert file with extension SQD:

As far as we know, this .sqd file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

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