> echo "data:$(file -b --mime-type somefile);base64,$(base64 somefile)"
Also wanted an excuse to play with a few browser features :P.
or for linux, your favorite variant of pbcopy using xsel or xcopy?
Not to say this isn't a great tool.
I find myself often needing a quick way to generate a Data URI when playing with files on jsfiddle, or codepen (due to CORS). So I thought it would be nice to have a website that locally stores those files.
This was thrown together in a couple of hours (using react/mobx), and inspired by  "The XSS Game By Google post". It turned out that quite a few people didn't know that you could use URI's for things that were not images.
If you have any suggestions feel free to voice them :)
-  https://news.ycombinator.com/item?id=13021869