X1 Desktop Search saved search data
File type: Various data file
An x1s file contains saved search data for X1 Desktop Search.
It is an application-specific data file used by X1 on Microsoft Windows.
File type category:
Various data file
Date updated: October 9, 2026
The x1s file extension is associated with X1, a desktop search application for Microsoft Windows developed by X1 Technologies.
An x1s file stores a saved search and its associated search settings. X1 Desktop Search uses this data to retain searches for later use.
Open an x1s file with X1 Desktop Search on Microsoft Windows. The file is intended to be used from within X1 rather than opened as a document in a text editor or another general-purpose application.
The x1s file is an application-specific saved-search file, so it cannot be meaningfully converted to a standard document format. To use the search in another application, recreate its search criteria there.
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