Hit any public URL from a server-side probe and report what a visitor would see right now: HTTP status, response time, TLS handshake, final redirect destination, content type. This is a one-shot diagnostic, not a monitor. Read the walkthrough for why a 30-second diagnostic can be more useful than a paid continuous monitor when you're just trying to answer "is my site up."
Read the story behind this tool: A 30-Second Uptime Diagnostic Beats a Paid Monitor When You Just Need to Know If The Site Is Up →