Share text via instagram from a webiste application

I have a web application designed for mobiles. I want to give users an option to share the content of the application via whatsapp, sms, fb messenger instagram and twitter. I could find the code for integrating whatsapp, sms and fb messenger but unable to get for instagram. example :

fb_messenger = "fb-messenger://share/?link=" + encoded_message;
whatsapp = "whatsapp://send?text=" + encoded_message;

Does instagram provide such option to share any content from a website via instagram messages ?If yes, could you please point me to the solution. Thanks in advance!