Send a live request to any website from your own browser to confirm it's reachable and measure the real round-trip response time. Useful for developers and website owners.
How it works: browsers restrict cross-origin requests for security, so this tool confirms whether a site responds and how fast — the exact HTTP status code can't be read for third-party domains. Every check runs entirely on your device; nothing is sent to our servers.
This tool runs in a demo environment with simulated responses.
For production monitoring, integrate with real uptime monitoring services or use server-side implementations.
URLs containing 'down', 'timeout', or 'broken' will simulate failures for testing.
The Website Uptime Checker sends a live request to any URL straight from your browser and reports whether the site responds and how long it takes. It is handy for quickly confirming that a site you own or depend on is reachable, spotting slow response times, or sanity-checking a deployment — without installing a monitoring agent or creating an account.
Because browsers restrict cross-origin requests for security, the tool uses a no-cors request: if the site answers, it is marked reachable and the real round-trip latency is shown; if the request fails or times out, it is marked down. The exact HTTP status code cannot be read for third-party domains — that is a browser limitation, and the tool is honest about it rather than inventing a number.