Hi HN! I was working on a project some time ago where I created a web page (
http://tinysite.aadrake.com) deliverable in a single IP datagram and needed a way to see the size of compressed data I was using for testing. I created a utility for this, and now it has a frontend (not for mobile) and lives at
https://compresstest.com.
The utility is a custom TCP server written in Go, for those who are curious, and the more detailed writeup is available on my website (https://aadrake.com/posts/2017-10-29-the-biggest-smallest-we...).
Hope it's helpful!