You might want to warn about memory usage. I had Chromium consume several GBs of RAM and had to terminate it.
But it is great that there now is more offline tools. It would be great if there was a browser API that allowed the page to voluntarily go offline to guarantee that no data will be leaked.
Several GBs of RAM definitely too much, I'm not aware that this consumes that much memory. I will spend more time trying to figure out how much memory is minimum necessary for this and will warn in the page.
But it is great that there now is more offline tools. It would be great if there was a browser API that allowed the page to voluntarily go offline to guarantee that no data will be leaked.