Hi Steve
Instagram makes it quite easy to directly embed images if you know their ID. For example, this works out of the box in TiddlyWiki:
The image sizes are:
t = 150 x 150 px
m = 306 x 306 px
l = 640 x 640 px
It should be quite easy to build a macro around that.
Embedding the entire Instagram post, complete with the text and buttons, is a slightly more complicated business, requiring using their API.
Funnily enough, I’ve just introduced a new plugin for embedding tweets, where there is no choice but to use their API:
Best wishes
Jeremy.