1. Verifying SSL Certificate Expiry and SANs
DevOps EngineerBackground
A DevOps engineer needs to verify if a newly issued SSL certificate contains all the required subdomains in its Subject Alternative Names (SANs) and check its exact expiration date before deploying it to a production load balancer.
Problem
Manually running openssl commands on a local machine to inspect the certificate details is slow and error-prone.
How to use
Paste the PEM-encoded certificate text into the input area.
-----BEGIN CERTIFICATE-----
MIIDdzCCAl+gAwIBAgIQAqyg...
-----END CERTIFICATE-----Outcome
The tool displays a green 'VALID' status badge, lists the remaining validity days, and displays the full list of domains under the Subject Alternative Names section.