.OTZ File Extension
File TypeOpenLP Theme File
This file is saved in a binary format, which requires a specific program to read its contents.
What is an OTZ file?
Theme file used by OpenLP, a free application used for developing multimedia content for church worship services; contains settings that give the presentation (an .OSZ file) a certain appearance; may include fonts, text colors, background images, and other display information.
Several OpenLP themes can be downloaded from the OpenLP.org website.