Okay but now you have to tell us how it works!

Yeah I was surprised to see how fast I read the entirety of the greentext community here… but that’s a good thing, makes me realize it’s an addiction and forces me to stop

I use Uptime Kuma as mentioned in another comment, but also Speedtest Tracker which makes automated speed tests at the interval of your choice and displays them in a coherent dashboard. It’s pretty neat and it did help me figure out a few things about my network.