zlacker

>>Jeanne+(OP)
Your HTML already has semantic meta elements like author and description you should be populating with info like that: https://developer.mozilla.org/en-US/docs/Learn/HTML/Introduc...

>>qbasic+Ol
How do I add a semantic definition in an HTML tag to a JPEG, or MP4, or WAV, or any non HTML format? HTML tags fix HTML, not other formats.

>>burnte+O51
JPEG has EXIF, MP3 has ID3 tags, MP4 has ilst, MKV has Tags, etc. We don't need xkcd/927 for these other formats that already have standard metadata mechanisms.