After playing with it for a few minutes, this looks like it could be a really handy tool. Often times I'd find myself creating enormous diagrams trying to capture everything your tool handles more gracefully.
Is there some way to export data (SVG ideally) so I can use the diagrams in other apps? Also, I noticed that saving a diagram doesn't retain labels I give a block.
There is a send feedback feature, it’s in the drop down under your username top left. Thanks so much for reporting that, because I had only tested it extensively in Chrome and hadn’t seen that.
Edit: I've fixed it. (apparently you can't use innerText in Firefox, has to be textContent)
Is there some way to export data (SVG ideally) so I can use the diagrams in other apps? Also, I noticed that saving a diagram doesn't retain labels I give a block.