Service
Instagram follow buttons
Link visitors to your Instagram profile. This service supports following, rather than posting a shared web link.
Website button
<div class="ats_follow ats_kit_size_32"> <a class="ats_btn_instagram" data-handle="your-profile"></a> </div> <script async src="//static.addtosite.com/widget.js"></script>
Other services
The same button, built for somewhere else. All 79 are in the directory.