Use this after changing a post's status later on, to
keep the matching YouTube video's privacy in sync (see Phase 9,
Part D). Leave the video ID blank and give a post path instead to
update every video embedded in that post at once.
Move photo(s) between public and private
Use this after changing a post's status later on.
Move one specific photo, or leave the filename blank to move
every photo referenced in the post below in one
go — handy for a trip post with a dozen photos. Doesn't need
Google Photos connected — GitHub token only.