There could be a counterparty app that run a webserver to accept these POST requests and save the images.<p>If the parameters were editable people could use the app to share to imgur and other sites alike.
This is great. I wish there were more of this.<p>"Sharing" is only good if you can share through standard methods. Call APIs when sharing, share to arbitrary servers etc.
I made this! More background here: <a href="https://andybrett.com/writing/send-as-post" rel="nofollow">https://andybrett.com/writing/send-as-post</a>