Board Thread:The Last Sovereign Discussion/@comment-29984007-20180410151643/@comment-35006067-20180709173345

Note: You won't be able to get around the way files are uploaded and downloaded (and their respective default folders). It's a browser, there are limitations.

That being said, I've built a quick working example here: https://codepen.io/anon/pen/LBPJEE

Tested on both Chrome and Firefox, and it can import and export JSON fine, with a nameable file. No IE/Edge on hand for checking the explosive part though.