Paste a web address or an API address and see the status code and the response time. This page runs that check once. A free account runs it every 10 minutes and emails you when it fails.
No credit card. Add the address once. You do not come back to paste it again.
A green result is a small answer. It says this address responded, just now. It does not walk a login or a checkout.
200 to 299 means the server answered. 404 means that page is missing. 500 means the server failed.
Under half a second is comfortable for most pages. Past one second, people start to notice. One slow reading can be the path between this check and the server.
If nothing comes back, the address, the DNS, or the server could not be reached from here.
Useful result? Put the address on a free account and the next checks run themselves.
No credit card. The schedule starts as soon as the address is on the account.
On this page, yes. Create a free account and the same check runs every 10 minutes. You get an email when it fails. No credit card.
It sends a request to the address and records three things: whether a connection was made, the HTTP status code, and the time to reply.
Under 500 milliseconds is fine for most sites. Over a second is when visits start to drop. A single slow result can be the network, not your server.
No. It means this address answered just now. It does not sign in, fill a basket, or pay. A path like that is a synthetic test.
Create a free account and the check is no longer manual. It runs every 10 minutes and emails you when it fails. Checks every minute, and Slack or Teams, start on the $5 Solo plan.
The other checks are one-off too. The free account is where an uptime check starts running on its own.
The check repeats every 10 minutes and emails you. You paste the address once.
Create a free accountFree website testing tools, monitoring products, and practical engineering guides.
Create complete synthetic journeys from a simple prompt.
Explore builder →The check on this page waits for you to press it. Create a free account and that same check runs every 10 minutes. You get an email when it fails, without opening this page again.
Every 10 minutes, for up to 10 addresses. You paste each one once.
Email when a check fails. Slack, Teams, and webhooks start on the $5 Solo plan.
Same uptime checks as a paid account. Every minute starts at $5.
No credit card. The schedule starts as soon as the address is on the account.
