{% comment %} The default Open Graph card. Copy this file into your own project to customise it, for example to templates/og/post.html, and point HTML2IMG["TEMPLATE"] (or a per-model `template=` registration option) at it. The context available here: object the model instance being rendered (None in a sample preview) og_headline the headline, from og_image_headline or the object's title og_subtitle the optional second line site_name HTML2IMG["SITE_NAME"], or the current Site's name site_logo HTML2IMG["SITE_LOGO"], an absolute URL plus anything returned by the object's og_image_context() and by the `context` callable given at registration. Guard your own fields with {% if %} so one template can serve several models. Everything referenced here is fetched by the renderer over the public internet, so fonts, images and stylesheets must be reachable from outside your network. {% endcomment %}