Free Website Checker Tools

Quick, free checks for any public URL — no account needed. When you want to know the next time something changes, Site Monitor can watch it for you.

Is it down?

Check if a website is down for everyone or just you. Free, instant check from our servers: HTTP status, response time, and where it redirects.

HTTP header checker

See every redirect hop, the final status code, all HTTP response headers, and when the SSL certificate expires for any URL. Free, no signup.

Broken link checker

Find broken links on any web page in seconds. We check every link on the page and list the ones returning 404s, errors, or no response. Free, no signup.

Start watching free → Explore the live demo

Free plan · 10 URLs · hourly checks · 2 AI summaries/mo · no credit card