Let’s Encrypt is an initiative run by the Internet Security Research Group (ISRG).
Free and open certificate authority recognized by all major browsers, such Chrome, Mozilla’s Firefox and Microsoft’s Internet Explorer.
Server Configuration -> Manage SSL Certificate
In Tab Let’scrypt, ‘Request Certificate ‘on the bottom (white button)
Now You can find more details about created certificate in Browser:
Let’s Encrypt is a new Certificate Authority: It’s free, automated, and open.
The Certificate Policy found at https://letsencrypt.org/repository/
Script for automaticlly updates: https://certbot.eff.org/
Automatically enable HTTPS on your website with EFF's Certbot, deploying Let's Encrypt certificates.