Free monitoring tools

Quick checks for website reliability problems.

Check whether a site is down, inspect SSL expiry, and translate uptime percentages into real downtime.

Launch Check

Check DNS, HTTPS, SSL, HTTP status, response time, error pages, and launch headers.

Is my site down?

Check if a website is reachable and how fast it responds.

SSL checker

Check certificate expiry and days remaining for a public HTTPS site.

Uptime calculator

Convert uptime percentages into downtime per day, month, and year.