: Sites like Presets Store offer browser-based tools where you apply your preset to a provided "HALD" image and upload it to generate a LUT.
: A popular standalone desktop application that uses a neutral PNG (HALD) to capture your Lightroom adjustments and output them as a CUBE file. xmp to cube converter
: Save the edited HALD image as a high-quality JPEG or PNG. : Sites like Presets Store offer browser-based tools