ah that's an embarrassing oversight! we reuse the same cdn configuration for multiple projects and for some reason the compression isn't properly configured for our portal-notebooks.singlestore.com entry point. It's funny that I reconfirmed that before publishing the blogpost, but mistakenly looked at the request headers and not the response headers (facepalm). We are fixing that now, thank you! This will be helpful for cases where you access the notebooks UI directly. For cases where you come from other page, it shouldn't make that much difference, since the iframe is already pre rendered.