Share Plugin
Add the following code in your site, inside the head tag:
<script>
        function SocialShare(url) {
            window.open('https://nexfer.com/share?url=' + url, '', 'height=600,width=800');
        }
    </script>
Then place the share button after changing the URL you want to share to your page HTML:
<button onclick="SocialShare('http://yoursite.com/')">Click me</button>
Example: