K-Tools Render Preset Manager is an add-on that allows users to save, load, and organize complete render setting profiles for Cycles, EEVEE, and Workbench. The tool exports configurations into a single JSON file, making it easy to switch between different quality levels or specific project requirements. Before applying a preset, a preview window displays the exact settings that will change alongside their new values.

The add-on includes a built-in undo function to instantly revert settings to their previous state after a preset is loaded. Users can configure a custom directory to build an organized library of presets directly accessible within the Blender interface. A whitelist system provides control over which specific properties are loaded by default. The tool correctly handles complex data types like custom curves and includes silent operators for integration into automated scripts.