Robolly - Auto‑personalize your open graph, social posts & more
Gauguin - Generate dynamic OpenGraph or social images in real-time
OG IMPACT - A free, open source API for generating social media images
Microlink - Extract structured data from any website
Social Image Generator - Automatically Generate Social Images For Your WordPress Site
Placid - Use Placid to auto-generate images, videos & PDFs from reusable templates