I've been using this minimal extension for a while solely for that: https://chrome.google.com/webstore/detail/hacker-news-collapsible-c/hockhafcdegocajmjhafgjnc

I've been using this minimal extension for a while solely for that: https://chrome.google.com/webstore/detail/hacker-news-collapsible-c/hockhafcdegocajmjhafgjncjpodihkd?hl=en https://chrome.google.com/webstore/detail/hacker-news-collap... It's definitively something that should be built in though.