I open-sourced a tiny PHP library that turns a photo into a Pinterest pin.

SyndiKit Pin

SyndiKit Pin is a small, focused PHP library for generating Pinterest pins in code. Give it a photo and a headline, and it renders a clean 1000x1500 pin: the photo fills the top, an accent bar divides the frame, and the title sits on a readable panel with an optional brand line. It also renders a 1.91:1 image for Open Graph and Twitter cards. It uses nothing but PHP and the GD extension, so there is no external API, no monthly fee, and no dependencies to manage. MIT licensed and built by the team behind SyndiKit.