.ASCX File

The ascx file extension is associated with the Active Server Pages (ASP.NET), a server side scripting engine used to generate active web pages.

The ascx file stores a part of dynamic web page, for example active menu.

An ascx file extension is related to the Active Server Pages and used for its web user control files.

How to open:

Use compatible tools to work with *.ascx files.

How to convert:

Probably cannot be converted to anything else.