SSL Checker

Check the SSL certificate of any website and quickly see whether it is valid, who issued it, and when it expires.

Enter your domain below to run a free SSL certificate check.

No signup required.

Check Your SSL Certificate

An SSL certificate helps establish an encrypted HTTPS connection between a website and its visitors.

Use the SSL Checker to review the certificate currently associated with your domain and confirm important details such as its validity, issuer and expiration date.

This is useful when you are checking a new website, renewing a certificate, moving to a new host, changing DNS settings or investigating an HTTPS error.

What the SSL Checker Shows

Your SSL check gives you the certificate information needed to quickly understand its current status.

SSL Certificate Status

See whether the certificate returned by the domain is currently valid.

Certificate Issuer

Check which certificate authority issued the SSL certificate.

Validity Dates

See when the certificate became valid and when its current validity period ends.

SSL Expiration Date

Check the expiration date so you know when the certificate will need to be renewed or replaced.

HTTPS Status

Confirm that the domain is serving its website over HTTPS with an SSL/TLS certificate.

How to Check an SSL Certificate

1. Enter the Domain

Enter the website domain you want to check, such as example.com.

2. Click Check SSL

The SSL Checker retrieves the certificate information associated with the domain.

3. Review the Results

Check the certificate status, issuer, validity period and expiration information.

No software, browser extension or account is required.

Why Check an SSL Certificate?

A website can have HTTPS enabled and still run into certificate problems.

For example, a certificate can expire, be issued for the wrong hostname, or be configured incorrectly during a hosting or server change. Certificate-chain problems can also prevent some clients from establishing a trusted connection.

Checking the live certificate helps you find the problem before spending time troubleshooting unrelated parts of the website.

If you are doing a wider technical review, use Uptek’s Broken Link Checker to find broken internal and external links on the same site.

Common SSL Certificate Problems

Expired SSL Certificate

Every website certificate has a defined validity period. Once it expires, browsers and other clients may no longer trust the connection.

An SSL expiration check lets you confirm the current expiration date before that becomes a problem.

Certificate Not Valid Yet

Certificates also have a start date. If the certificate is being served before its validity period begins, clients may reject it.

Domain or Hostname Mismatch

The hostname being visited needs to be covered by the certificate.

Problems can appear when the certificate was issued for a different hostname or when a subdomain is not included in the certificate.

Incomplete Certificate Chain

Certificates are validated through a chain of trust that can include an end-entity certificate, intermediate certificates and a trusted root.

If the server does not provide the required intermediate certificates correctly, some clients may be unable to validate the connection.

Certificate Configuration After a Migration

SSL issues sometimes appear after moving a website, changing hosting providers, updating DNS or connecting a new domain.

For Shopify migrations in particular, SSL and domain configuration should be checked as part of post-launch QA. Our Shopify migration checklist covers the other technical areas that should be reviewed during a migration.

SSL vs TLS

The terms SSL and TLS are often used interchangeably, but they are not technically the same thing.

SSL is the older protocol name. Modern HTTPS connections use TLS, which succeeded SSL.

People still commonly search for terms such as SSL certificate, SSL checker and SSL test, which is why tools like this continue to use the familiar SSL terminology.

So when you use an SSL checker today, you are effectively reviewing the certificate and TLS-based security used by the website’s HTTPS connection.

When Should You Check Your SSL Certificate?

You do not need to check a certificate every day, but there are several times when an SSL test is useful.

Check it when you:

  • Launch a new website or domain
  • Install or renew an SSL certificate
  • Change hosting providers
  • Update DNS records
  • Migrate a website
  • Move between subdomains
  • See a browser certificate warning
  • Troubleshoot an HTTPS connection
  • Want to confirm the certificate expiration date

For ecommerce websites, it makes sense to include SSL validation alongside other launch and technical QA checks.

SSL Checks for Shopify Stores

Shopify manages SSL certificates for domains connected to the platform, but domain, DNS and migration changes can still require troubleshooting.

If you have recently connected a domain or migrated a store, use the SSL Checker to confirm what certificate is currently being served for the hostname.

SSL is only one part of a technical store review. Our Shopify SEO services also cover technical SEO issues such as crawlability, redirects, indexation, Core Web Vitals and store architecture.

SSL Checker FAQs

An SSL checker is an online tool used to inspect the SSL/TLS certificate presented by a website.

It can help you verify whether the certificate is valid and review details such as the certificate authority, validity dates and expiration date.

Enter the website domain into the SSL Checker and run the check.

The tool retrieves the certificate information for the domain and displays its current SSL details.

Yes. You can use Uptek’s SSL Checker for free without creating an account.

You only need the domain or website address you want to check.

For example:

example.com

Enter the domain into the SSL Checker and review the certificate expiration date shown in the results.

This tells you when the current certificate’s validity period ends.

An expired certificate can prevent clients from establishing a trusted HTTPS connection and can result in certificate warnings.

The certificate needs to be renewed or replaced with a valid certificate.

The issuer is the certificate authority that issued and signed the website’s certificate.

The issuer information is included within the certificate itself.

A certificate chain connects the website’s certificate through one or more intermediate certificates to a certificate authority root trusted by the client.

A correctly configured chain allows the client to validate the certificate presented by the website.

SSL is the older protocol. TLS succeeded SSL and is the protocol used for modern secure web connections.

“SSL certificate” remains the more familiar term, so SSL and TLS are still commonly used together when discussing HTTPS certificates.

No.

HTTPS is HTTP communication protected using TLS. The website’s certificate is used as part of establishing that secure connection.

Yes, if the subdomain has a publicly accessible SSL/TLS certificate, you can enter that hostname into the checker and inspect the certificate being served.

Common causes include an expired certificate, a hostname mismatch, an incomplete certificate chain or a problem with the current certificate configuration.

Run an SSL check first to see which certificate the website is actually serving.

No. The SSL Checker is a diagnostic tool.

If it identifies an SSL issue, the fix normally needs to be made through your hosting provider, server configuration, DNS setup or certificate provider.