The KTH File belongs to keynote that is an Apple iWork program. Since it's a theme file hence it contains all default fonts and layouts for a presentation. It is also used for saving presentations and templates.

This application belongs to a category of Themes, Graphics, Fonts, Layouts etc.

This file type belongs to keynote, an Apple iWork Programme

application/x-iwork-keynote-sffkth

The location of kTH file in keynote Themes directory is as follows

• [user]/Library/Application Support/iWork/Keynote/Themes/

• An Apple keynote .KTH File can be opened using Apple iWork Programme
• In Windows, this File can be opened using an associated program to presentation themes.