Paste a domain and we'll read its certificate right now — who issued it, when it runs out, and how many days that leaves you. No account, no email, no setup.
An expired certificate doesn't degrade — it breaks. Every visitor gets a full-page browser warning, and most of them leave. The awkward part is that nothing tells you it's coming: the renewal reminder goes to whoever set it up, which is often someone who has since left, or an inbox nobody reads.
Auto-renewal helps, right up until it doesn't. A changed DNS record, a firewall rule, an expired payment method, or a renewal hook that quietly stopped running will all leave you with a certificate that was supposed to renew itself and didn't.
Under 30 days is worth a calendar entry. Under 14 is worth doing today. And if you'd rather not check by hand, a monitor will watch it for you and email you well before the date — that's the same SSL monitor our paying customers use, and it's included on the free plan.
This page checks once, right now. A free account checks on a schedule and emails you before something expires or goes down — 25 monitors, no card needed.
We'll watch it freeAlready have an account? Go to your dashboard