I process my raw photos in darktable which includes adding keyword tags. I then export them as jpegs and upload to zenphoto which I host myself. For some reason, however, when I look at the photos on the site, the tags are not there.
I've checked the jpegs using exiftool and they appear in the 'Subject' field. I'm posting on the darktable forum as well to see if it's an issue there but no one has seen it so I thought I'd make a post here as well.