Has Proton added this yet? Most competitors I’ve used always had it. Just go to some url and it will tell you if you’re on Proton.
So far I’ve just been told to check my ip - this is cumbersome and often impractical. I don’t want to break my connection to compare, I’m on my mobile and VPN is on the WiFi router so if I just disconnects from WiFi that will send me to my carrier network so I can’t compare with the WiFi, I may have VPN also on mobile and want to verify that I stay on proton both on and off WiFi, etc.
I think first of all, there should be a clear message when visiting proton sites if I’m on their vpn or not, at least on ProtonVPN, and there should also be a separate url like test.proton.me that tells me just this and is easy to curl etc.
Proton should, but they're not the only ones who can. They've done the hard work by providing an API, which I linked earlier ( https://api.protonmail.ch/vpn/logicals ). That API is the only piece that Proton needs to keep updated and working, but anyone can compare their own IP (or someone else's IP who connects to them) against that API....and it's already built.
It's super simple for someone (ideally Proton) to set up a website. Websites already grab the IP of who connects to them, then they just run that IP against that API and just have a green banner that says their connected via which exit, or red banner with ISP and IP. And you can get fancier from there.
I mean, I'm not a web dev, but I could set that up in less than a day. I'm also not a UI/UX person, so it would also look awful.