XsoftHost.com provide an extremely useful SSL tools to help you solve some of the most common SSL issues ,and to discover ssl certificates information :
Review & check your SSL Certificate's Installation : This tool will verify and show you that the SSL certificate on your web server or web site has been properly installed. The SSL Checker will display the certificate chaining, server type, Common Name, issuer, with additional certificate details.
Decode Certificate Signing Request (CSR) : This tool allows you to check CSRs and view the information contained within them. All you have to do is enter the CSR and the CSR Decoder will do the rest.
Verify your SSL Certificate is Correct : This tool allows you to instantly decode an SSL certificate. You can use this to decode your PFX, DER, or PEM files and verify that all of the information is correct.
Match Your SSL & Private Key Pairs : This tool allow you to determine whether a private key or CSR file matches an SSL certificate. Any mismatches between pairs will prevent your certificate from working properly.
Check for Insecure Links : If your website is not displaying the proper security lock "padlock icon", this tool allows you to instantly check if there are ANY insecure links found within your URL.
SSL Format Converter : In some cases an SSL Certificate is issued in a format that may not be compatible with your server type. This tool allows you to convert the format of any SSL Certificate.