Google Analytics is a free web analytics service that tracks and reports website traffic.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Issuu is a digital discovery and publishing platform.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Pinterest Ads is an online advertising platform developed by Pinterest.
Pinterest Conversion Tag allows you to track actions people take on your website after viewing your Promoted Pin.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.