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10 Best Free SSL Checker Tools for Troubleshooting and Analysis


Here is the list of the Ten Best SSL analyzers that save you hours of troubleshooting time and headaches.

  • SSL Labs
  • SSL Security Test
  • SSL certificate Decoder
  • COMODO SSL Analyzer
  • Certificate Analyzer
  • DigiCert SSL Checker
  • AppSec SSL Analyzer
  • GocertsSSL
  • SSLShopper
  • Cheap SSL Checker
  • OpenSSL & SSLyze

SSL Labs

The is powered by Qualys, with the tool you can check your website for certificate and configuration and your browser for SSL installation.

You can start the analysis by just entering the domain name or the Ip address of the target server, it runs an in-depth scan and provides you with a detailed analysis report.

The report details the certificate installed, serial numbers, Certificate Transparency, , Signature algorithm, DNS CAA, certification path, ciphers, protocols, and Handshake Simulation.

SSL Security Test

The focuses completely on security, it also checks for compliance with requirements, , and NIST guidelines.

It also checks for the possible subdomains of the domain, chain, and vulnerabilities like heartbleed and POODLE OVER TLS.

Also, it do checks for standard Industry practices such as CAA, Support for TLSv1.3, Ciphers, HSTS, and other standard practices.

SSL certificate Decoder

The powered by Namecheap is the best source for all your SSL-related troubleshooting needs.

It contains an SSL Checker, SSL Converter, CSR Decoder, DCV checker, Certificate & key checker, and decoder. link is a single-stop solution for all of your digital certificate needs.


Gives you a that Certificate Details, status, web server software used, Protocol Versions, Ciphers, and Protocol Features.

Its clean design and rapid response are the advantages of this SSL Checker, by default it checks with port 443, but you can change it.

Certificate Analyzer

The is powered by Trustwave, all you need is just to enter the domain name and the and click on test my server.

It does a basic installation check and provides you with a report about the certificate installed on the server.

DigiCert SSL Checker

OR Symantec SSL checker (Acquired) helps you in locating the problems with the installed SSL certificates and also checks for certificate status, Expiration, ciphers, and .

It’s a simple tool, if you want to check the installation with port 443 then just need to enter the domain name alone, if it is for the port number, then you need to provide the port number also like

AppSec SSL Analyzer

Like other SSL checkers, is not web-based, you can download and launch the application from your computer.

It checks for the domain and/or IP address, and tests vulnerabilities related to the encryption algorithms. The latest version is AppSec Labs SSL Analyzer version 2.0.


is yet another simple SSL installation checker that checks for the certificate chain, DNS,and Certificate Common Name.

It also includes tools such as a CSR decoder, Certificate decoder, and certificate key matcher. All you need is just to enter the domain name, and port number and click on search.


With the SSL Checker tool, you can diagnose installation problems with the SSL installation and it helps you to make sure that certificate is correctly installed, valid, and trusted.

It also tracks the server type and the IP address of the domain, along with the chain. To use the SSL Checker with the port you just need to enter the server’s hostname.

Cheap SSL Checker

The is a simple SSL checker tool that verifies the SSL installation details such as common name, issuer, validity, server type, certificate chaining, etc.

To run the scan simply you need to enter the IP address or the domain name.

OpenSSL & SSLyze

You can also use the following to run an installation check

openssl s_client -showcerts -connect |

is the Fast and Complete SSL Scanner to find in the servers configured with SSL.

sslyze –regular |

It is a that checks a server’s service on any port for the support of TLS/SSL ciphers, protocols as well as recent cryptographic flaws, and more.

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