SSL Checker

Use our SSL checker to check SSL certificates, verify HTTPS security, and inspect the complete certificate chain.

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SSL Certificate Checker

Verify a website’s SSL/TLS certificate with ease with our SSL certificate checker tool. The SSL Checker by IPlocation.io is a versatile tool that examines and verifies a website’s SSL certificate. It runs a detailed verification process that validates the entire certificate chain.

These kinds of checks are necessary because SSL certificates play an important role in securing HTTPS communications. They let a website's visitors confirm they are connecting to the genuine site rather than a fake phishing copy.

Domain managers and webmasters can use the SSL checker to verify their own site’s SSL setup without digging through different settings menus.

How to Check SSL Certificates

Checking an SSL certificate using our tool is straightforward. Follow these steps:

  1. Enter the domain you want to check.
  2. Click Check SSL Certificate.
  3. The tool examines the website's SSL/TLS certificate and displays the results.

If you just want a quick check, look at the “Valid” statement and move on. For more details, scroll ahead. Expand the certificate chain sections to inspect individual certificates.

The results give you both a quick overview and more technical information when you need to investigate a certificate in greater detail.

Powerful Features of the SSL Checker

1. See Whether the Certificate Is Valid

Our SSL checker tool first shows the certificate's overall status. A clear Valid or Invalid badge lets you quickly determine whether the certificate passed validation.

The SSL Certificate Examination panel also includes a summary of the certificate, such as

  • Host: Shows the exact domain name (which could be a subdomain).
  • URL: Shows the complete URL
  • Issued For: Shows the parent domain name
  • Issued By: The name of the issuing authority
  • SSL Compression: Whether SSL compression is enabled or disabled
  • SSL Chain Validation: Whether the SSL chain is validated or not.

This gives you a quick way to understand which domain the certificate covers, which certificate authority issued it, and whether the certificate chain was successfully validated.

2. Inspect the Full Certificate Chain

One of the most useful features is the detailed certificate chain information. 

As you know, a website's certificate is not a standalone item. It normally forms part of a chain of trust connecting the site's certificate to an intermediate certificate and, ultimately, a trusted root certificate.

The SSL Checker separates these certificates into individual sections. Therefore, you can inspect:

  • The website's leaf (domain) certificate
  • The intermediate certificate
  • The root certificate

You can expand each certificate to reveal its technical information.

3. View Certificate Details

For each certificate in the chain, the tool provides information that can help with troubleshooting and verification.

You can see:

  • Issued For: The domain for which the certificate is issued.
  • Issued By: The issuing authority (could be intermediate or root).
  • Signature Algorithm: The type of encryption algorithm used (i.e., ecdsa-with-SHA256, ecdsa-with-SHA384, or RSA-SHA256)
  • Certificate Version: self-explanatory.
  • Valid From: Date on which the certificate was issued.
  • Valid To: The date until which the certificate is valid.
  • Validity (Total):  The total number of days till which the certificate is valid.
  • Validity (Remaining): The remaining number of days of validity.
  • Serial Number: Certificate serial number.
  • Serial Number (Hex): The same serial number in hexadecimal form.
  • Certificate hashes: Hashes of the certificate in MD5, SHA1, SHA256, SHA384, and SHA512.
  • Public Key: Tap “Click to View” to reveal the certificate's public key.
  • PEM certificate data: Self-explanatory.

The Validity (Remaining) field is especially useful when monitoring your own certificates, since it gives you a clear idea of when a renewal is due.

Other Useful Features of the SSL Checker

Other useful features of the SSL checker are basically a product of good design. This tool in particular is good because:

  • It is free to use
  • Requires no signup
  • Has no usage limits
  • Only has non-intrusive ads
  • The UI is clean and easy to use
  • Works in the browser so doesn’t need to be downloaded or installed.
  • Works out of the gate

Why Check an SSL Certificate?

There are plenty of reasons to check an SSL certificate. For example, checking the certificate can help you:

  • Confirm that HTTPS is working correctly.
  • Check whether a certificate has expired.
  • See when a certificate will expire.
  • Identify the certificate authority while checking a different website for validity
  • Verify the certificate chain. A complete chain shows better trust signals than an incomplete one.
  • Investigate browser certificate warnings.
  • Troubleshoot SSL/TLS configuration problems.
  • Inspect certificate details during website deployments.

For website owners and administrators, this can be especially useful when checking a new certificate installation or making sure a renewal was completed correctly.

Web developers can use the SSL checker to inspect certificate information when deploying websites, APIs, or other services that rely on HTTPS.

Security-conscious users can examine a suspicious website's certificate chain, signature algorithms, hashes, and expiration information before interacting with it.

Frequently Asked Questions

How do I know if a website's SSL certificate is valid?

There are two ways to check if a website’s SSL is valid. The first is to simply check for the lock icon in the address bar next to the website’s URL. A lock icon means that the SSL certificate is valid.

The other way is to run the website domain name through our SSL checker tool. It will provide more detailed results, including the certificate issuing authority and the full certificate chain. It is more accurate and dependable.

What does "SSL Compression disabled" mean? Is that a problem?

It means encrypted traffic is not compressed and is sent as-is. This is actually good because it prevents an attack called “CRIME,” which could use compressed SSL traffic to steal credentials. Experts recommend keeping SSL compression off.

How long are SSL certificates valid?

As of March 15, 2026, an SSL certificate’s maximum validity is 200 days. 

What's the difference between the leaf, intermediate, and root certificate?

They're the three links in a website's "chain of trust." The leaf is the certificate issued to the website itself (e.g., iplocation.com); your browser checks it first. The intermediate sits in the middle: it's signed by the root and used to sign the leaf, acting as a safe buffer so the root doesn't sign sites directly. The root is the trusted anchor at the top, pre-installed in your browser and OS, and everything traces back to it. If all three link up correctly, the connection is trusted. 

My certificate is valid in the browser, but the checker flags a problem. Why?

Sometimes the intermediate certificate is not served properly. The SSL checker flags that as a problem. Your browser, however, can fetch an intermediate certificate from its own cache (if you visited the site previously) and essentially “pass” the check. That’s why results can vary between the two.