Free website & uptime tools
No signup, no catch. Run a real browser check, see if a site is down from three continents, or work out downtime and SLA budgets.
Free Browser Check
NewLoad any URL in a real headless browser and see a screenshot plus Core Web Vitals (LCP, CLS, FCP, TTFB) — the way your users actually experience the page.
Is This Website Down?
Check if a site is reachable from Europe, the US, and India at once. Instant, multi-region.
Uptime Calculator
Turn an uptime percentage into real allowed downtime per day, week, month, and year.
SLA Calculator
Allowed downtime and error budget for any SLA target, across monthly and yearly windows.
Downtime Cost Calculator
Estimate what an outage costs your business from revenue and downtime duration.