deeplins.html
<!-- viber descktop and mobile -->
<a href="viber://chat?number=380501234567">viber chat</a>
<a href="viber://add?number=380501234567">viber add</a>
<!-- WhatsApp -->
<a title="WhatsApp" href="whatsapp://send?phone=380501234567">WhatsApp</a>
<!-- fd (need numeric ID) -->
<a href="fb://profile/facebook_ID">FB</a>
<!-- instagramm (need username) -->
<a href="instagram://user?username=username">instagramm</a>
<!-- YouTube -->
<a href="vnd.youtube://www.youtube.com/url">YouTube</a>
<a href="skype:nikname?chat">Skype chat</a>
<a href="skype:nikname?call">Skype call</a>
<!-- Telegram -->
<a title="Telegram" href="tg://resolve?domain=nikname">Telegram</a>