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SSL Checker

Check the SSL/TLS certificate of any website. Verify validity, expiry date, issuer, cipher suite, and certificate chain to ensure your site is secure.

Used 35.8K times today

Note: SSL certificate checking requires server-side access. This demo shows what an SSL check returns. For live checks, use SSL Labs (ssllabs.com/ssltest) or sslshopper.com.

How to Use SSL Checker

  1. 1

    Enter the domain

    Type the domain name or URL of the site whose SSL certificate you want to inspect — for example utilko.com.

  2. 2

    Click Check SSL

    The tool connects to the server, retrieves the SSL certificate, and parses all relevant fields.

  3. 3

    Review certificate details

    See the certificate subject, issuer (CA), validity period, SANs (Subject Alternative Names), and whether the chain is fully trusted.

Frequently Asked Questions

How do I know if an SSL certificate is about to expire?
The checker shows the exact expiry date. Any certificate with less than 30 days remaining should be renewed immediately to avoid browser security warnings that deter visitors.
What is an SSL certificate chain?
An SSL chain is the sequence of certificates from your domain certificate up through intermediate CAs to a root CA trusted by browsers. A broken chain causes browser warnings even if your certificate is valid.
Does this tool work for self-signed certificates?
Yes. The checker will display the certificate details but will flag self-signed certificates as untrusted since they are not issued by a recognised certificate authority.

About SSL Checker

The SSL Checker on Utilko lets you inspect the complete SSL/TLS certificate of any publicly accessible website. Expired or misconfigured certificates trigger browser security warnings that immediately erode user trust and can impact search engine rankings, making routine certificate auditing a critical part of site maintenance.

This tool fetches the certificate server-side and surfaces all important fields: subject, issuer, validity window, Subject Alternative Names, and chain status. Use it to verify a new certificate installation, monitor expiry across multiple domains, or diagnose mixed-content and trust chain errors.

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