Tool version 1.0.0
SSL Certificate Inspector
Displays certificate identity, validity and chain information for a public host. Useful for site owners diagnosing browser trust problems.
Enter a public address. The report will keep evidence and explanation together.
Quick answer
- What is it?
- Displays certificate identity, validity and chain information for a public host. Useful for site owners diagnosing browser trust problems.
- What does it accept?
- Hostname and optional port. Allow valid domain names and public IP addresses only, with a narrow port allowlist.
- What does it produce?
- Validity window, issuer, subject alternative names, days remaining, chain notes and hostname match. Errors explain handshake, timeout, name mismatch or untrusted chain conditions.
Inputs
Bring the right input
Hostname and optional port. Allow valid domain names and public IP addresses only, with a narrow port allowlist.
Method
What happens next
The server opens a bounded TLS connection, captures the presented chain and validates dates and host coverage using the runtime trust store.
Advanced
Where the tool goes further
Warns about near expiry, wildcard coverage, incomplete chains and certificates that do not cover the submitted host.
Results
Anatomy of the result
Validity window, issuer, subject alternative names, days remaining, chain notes and hostname match. Errors explain handshake, timeout, name mismatch or untrusted chain conditions.
Limits
When to verify elsewhere
Input quality, browser memory, remote server behavior and public API availability can affect a result. The finding describes the supplied material at the time of the test; it does not prove intent or future behavior.
FAQ
Questions about SSL Certificate Inspector
What does SSL Certificate Inspector accept?
Hostname and optional port. Allow valid domain names and public IP addresses only, with a narrow port allowlist.
How is the result produced?
The server opens a bounded TLS connection, captures the presented chain and validates dates and host coverage using the runtime trust store.
What will I receive?
Validity window, issuer, subject alternative names, days remaining, chain notes and hostname match. Errors explain handshake, timeout, name mismatch or untrusted chain conditions.
Is the input private?
Server connection only. Hosts are not retained beyond short abuse control hashes.
What are the main limitations?
Results depend on the quality, completeness and public availability of the supplied input. Review the evidence before making a high-impact decision.