SSL Checker: Validity and Expiry Date
Browser warnings on checkout drive customers away. This guide verifies whether the certificate is valid, which hostnames it covers, and days remaining. Queries run server-side; test only public sites over standard HTTPS, max six requests. Results give a first impression.
Step by step
- Type the full public domain.
- Confirm the query runs over HTTPS, start the check.
- Review status, issuer, hostnames, and expiry.
- Note remaining days for your calendar.
- Wait briefly after changes, re-check.
Example scenario
A small store shows a checkout warning. The certificate expires in 18 days and covers www only. Renewal is brought forward, a second check confirms dates. Customers pay without warnings.
Check your result
Start with status: valid, expired, or mismatch. Note expiry and remaining days. Look for both www and root. Cached results are possible; wait and re-check after changes.
Frequently asked questions
Valid yet browsers warn?
Clock skew, missing intermediate, or www-only coverage.
Track expiry how?
Record remaining days; check monthly.
Internal sites?
No. Never query login-gated addresses.
How fresh?
May be cached; wait and retry.
Keep an original copy before processing your file. Examples are illustrative; results depend on your document.