SharePoint Designer file
File type: Various data file
An spdesignxsl file extension identifies a SharePoint Designer file associated with Microsoft Office SharePoint Designer.
It is a data file used by the SharePoint site and web-page design application.
File type category:
Various data file
Date updated: October 4, 2026
Record marked as obsolete and not updated for a long time.
The spdesignxsl file extension is associated with Microsoft Office SharePoint Designer, a specialized HTML editor and web design program for creating and modifying Microsoft SharePoint sites and web pages.
An spdesignxsl file stores data used by SharePoint Designer as part of its SharePoint site and page-editing functions. It is a program-specific data file rather than a general-purpose document format.
Office SharePoint Designer was designed for Microsoft Windows. The format is obsolete.
On Microsoft Windows, open an spdesignxsl file with Office SharePoint Designer, the software associated with this format.
The file may not be useful as a standalone document outside the SharePoint Designer project or site context in which it was created.
The spdesignxsl file is used by SharePoint Designer in SharePoint site and page contexts, so it is not normally converted as a standalone document.
If the associated SharePoint site or page is still available, open it in Office SharePoint Designer and use the application's site or page management features to preserve or export the relevant content instead of converting this file directly.
Software applications that handle other tasks involving spdesignxsl files:
Microsoft Windows
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