It is critical to be wary of any website offering a direct "XMP to DNG converter" as a standalone, one-click tool. Since XMP files contain no image data, any such tool that claims to generate a DNG from only an XMP file is either fraudulent, a virus, or a useless placeholder. At best, it might generate a blank or black DNG file. At worst, it could compromise your system security. No algorithm can generate lost image data from a text-based settings file.
There are several reasons why you might want to convert XMP files to DNG: xmp to dng converter free
What you need is a Metadata Merger .
A DNG is Adobe’s publicly available raw image format. Unlike proprietary RAW files (Canon CR3, Sony ARW, Nikon NEF), a DNG is an open standard. It acts as a "digital negative" containing: It is critical to be wary of any