Okay, there are a few tools out there already which do exactly that. But I wanted to give it a shot and see how long it would take me to a) code that thing and b) rank it in Google.
So here it is: My tool to check websites for Brotli and GZip compression.
The coding part was about two hours, and I sent it live on June 1, 2021.
It’s called Akeed, which is an Arabic word. It stands for sure or yes, of course. Even though it has a .de TLD, I am hoping to get it ranked nicely worldwide.