Expiry checks
Spot certificates that are close to expiration before they turn into emergency work.
SSL Checker
Check certificate status, expiry, and HTTPS reachability.
Dev + Network
Combines public certificate-transparency data with a live HTTPS reachability probe.
Tip: double-click any visible result to copy it to your clipboard.
HTTPS check
See whether a domain still looks healthy on HTTPS before the browser warning does.
SSL problems usually show up at the worst moment. This checker surfaces certificate status, expiry timing, issuer, and live HTTPS reachability so you can review the basics quickly.
Highlights
- Shows certificate status, issuer, expiry date, and days left.
- Checks whether the domain currently answers over HTTPS.
- Useful before launch, after CDN changes, and during certificate renewals.
Launch readiness
Confirm HTTPS responds and see whether HSTS is being sent before you publish or migrate.
Fast ops snapshot
Copy the summary into a ticket when you need a plain-language certificate status note.
How to use it
Check certificate health before users find the broken edge case.
01
Enter the domain
Use the hostname you expect users to visit.
02
Run the SSL check
Tooloh pulls public certificate details and probes the live HTTPS endpoint.
03
Review status and dates
Use the result to decide whether you need to renew, redeploy, or inspect the edge config next.
Related tools
Same vibe. Same speed.
DNS Propagation Checker
Dev + Network
Compare DNS answers across several public resolvers.
DNS Lookup
Dev + Network
Lookup DNS records (A, AAAA, CNAME, MX, TXT).
WHOIS Lookup
Dev + Network
Check registrar, age, expiry, status, and nameservers live.
IP Lookup
Dev + Network
See your public IP and rough location info.
FAQ
Quick answers. No walls of text.
Does this inspect the exact live certificate chain from my browser?
No. It combines public certificate data with a live HTTPS response check for a fast operational snapshot.
Why might HTTPS be reachable when the certificate looks old?
Certificate transparency data can include several historical certificates, while the endpoint probe shows whether the domain currently answers on HTTPS.
Can this renew the certificate for me?
No. It is read-only and meant for checks before you change server or CDN settings.