EXIF UserComment from DarkTable

I want to use the “description” metadata from darktable [1] as caption in WordPress. In german language there are some characters which are not in ASCII but in Unicode/UTF-8. Umlaute: ä ö ü ß -> HTML: ä ö ü ß When a developed raw-picture is exported as JPG from darktable, then the “description” metadata is embedded into the exif-data. description whithout “umlaute” is written to EXIF ImageDescription field (ascii). description WHITH “umlaute” is written to EXIF UserComment field (unicode). As written in [2] the UserComment will be imported to wordpress: [“caption”] (string) Set to a non-empty value of one of the following fields (see source code for the precise logic involved): … EXIF UserComment field if [“title”] is unset AND EXIF:ImageDescription is less than 80 characters But for pictures with “umlaute” the caption in wordpress stay empty. [1] https://docs.darktable.org/usermanual/4.0/en/module-reference/utility-modules/shared/metadata-editor/ [2] https://developer.wordpress.org/reference/functions/wp_read_image_metadata/#more-information Test from linux-shell on exported JPG: $ exiv2 -pa 20230311_0052.jpg | grep Darktable-Test Exif.Image. ImageDescription Ascii 28 Darktable-Test Beschreibung $ exiv2 -pa 20230311_0067.jpg | grep Darktable-Test Exif.Photo. UserComment Undefined 49 Darktable-Test Beschreibung Umlaut äöü With some configuration it is possible to export Xmp.dc.title Xmp.dc.description Xmp.acdsee.notes … out of Darktable, but no IPTC-fields. Xmp-data cannot be imported? This will be a work-arround, when “Exif.Photo.UserComment Undefined” refuse to load. Sorry, maybe my posts affects the plugin “EXIF Caption” more than “EXIF details”. The caption after import is empty, when description is in EXIF.UserComment.