RenderStack.io

RenderStack is an API-first platform for generating images and PDFs programmatically — designed for developers, no-code builders, and marketing teams who need to automate visual content at scale. You design templates once in a visual editor, then render them on demand by passing in dynamic data via a simple REST API or embeddable GET URL. It handles everything from Open Graph cards and personalized certificates to multi-page PDF invoices and product images, with built-in support for AI-assisted template creation, rich text formatting, and smart image cropping. No headless browsers, no design bottlenecks — just fast, consistent, pixel-perfect output from data.

https://renderstack.io/terms