wtf is isitdown?

isitdown is a simple tool that checks whether a website or IP address is currently reachable. Think of it as a quick "is the internet broken or is it just me?" checker, you give it a URL or IP, and it tells you if that endpoint is up or down. At a high level, it's a JavaScript application that takes a target (a domain like google.com or a raw IP address) and attempts to connect to it. Based on whether that connection succeeds or fails, it reports back a yes/no answer on whether the target appears to be online. The people who'd find this useful are pretty broad. A founder who just deployed their new app might want a quick way to confirm it's actually reachable. A PM coordinating with an external vendor could use it to check if a third-party service is having issues before escalating. It's essentially a lightweight alternative to pinging a server yourself or relying on gut feel when a page won't load. The README doesn't go into detail on much beyond the basic premise, there's no documentation on how it's deployed, whether it runs as a web app or a command-line tool, or what specific checks it performs under the hood. Given the minimal description, it reads like a small personal project that solves a straightforward problem: tell me if this thing is down, without much ceremony.