OpenLP theme file
File type: Settings, options, themes or skins file
An .otz file is an OpenLP theme package. It stores the appearance settings used by an OpenLP presentation, including fonts, text colors, and image resources.
The file belongs to OpenLP, free software for creating multimedia presentations for church worship services.
File type category:
Settings, options, themes or skins file
Date updated: November 5, 2026
OpenLP uses the otz file extension for exported theme packages. A theme controls how text and other presentation elements appear, including font choices, text colors, and background or other image resources.
An .otz file is intended to be imported into OpenLP's theme system rather than used as a standalone presentation. It packages the theme definition and the resources required by that theme so it can be transferred between OpenLP installations.
OpenLP is free, open-source presentation software designed for church worship services. The format is used by OpenLP on Microsoft Windows and remains part of the application's theme import and export workflow.
Open an .otz file in OpenLP by using the application's theme management or theme import function. The imported theme then becomes available for use in OpenLP presentations.
The file is not intended to be opened as a normal document or edited directly. On Microsoft Windows, install OpenLP and import the file from within the program.
An .otz file is a theme package rather than a document intended for standalone conversion. OpenLP can import the theme and export it again as an .otz file. Themes are managed within OpenLP instead of being converted directly into presentation or image formats.
Software apps that manage or store settings in otz files:
Microsoft Windows
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