SharePoint Designer file
File type: Various data file
A .spdesignresx file is a SharePoint Designer file associated with Office SharePoint Designer.
Office SharePoint Designer is a Microsoft Windows application for creating and modifying Microsoft SharePoint sites and web pages.
File type category:
Various data file
Date updated: September 27, 2026
The .spdesignresx file is a supporting resource file used by Office SharePoint Designer. It belongs to the application's SharePoint site and web design environment rather than being a standalone web page.
Office SharePoint Designer is a specialized HTML editor and web design program from Microsoft. It was used to create and modify Microsoft SharePoint sites and web pages on Windows.
This is a legacy format associated with the discontinued Office SharePoint Designer application. The file is normally managed by the software and is not intended for general editing.
Open a .spdesignresx file with Office SharePoint Designer on Microsoft Windows. In most cases, the application uses this type of file as part of its own resources rather than opening it as a document.
A .spdesignresx file is not normally converted to another format. It is an application resource file rather than a document intended for export.
To move the associated SharePoint content, open the site in Office SharePoint Designer and use the application's available site or page management features instead of converting this file directly.
Software applications that handle other tasks involving spdesignresx files:
Microsoft Windows
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