This is great would love to use a piece from this as my desktop background. Having trouble downloading images though!
Everything is generated on the client side, including file to download. Some browsers (I know Chrome for sure) have a size limitation for files you can generate and download on the client.
As a workaround, try Firefox or Safari, or manually copy SVG's code from the inspector.
I'm not sure how to fix it atm, but I'll look into it.
EDIT: I think I fixed it, but if you still encounter it, please open an issue on GitHub. Thanks!