WP Headders/SSL Info is WordPress plugin. Which use for check important header whether it's set or not. what that header value is set. If your website has ssl then it'll show you details of ssl certificate.
You can download zip file and extract to wp-content/plugins directory. then you have to activate plugin, from WordPress admin dashboard
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
GPL V3