Render PDFs by API
Design a template once in the studio, publish it, and POST your JSON data
to receive a finished PDF. Invoices, statements, certificates — any fixed
layout with variable data.
Compose PDF
Design documents visually in the studio, bind them to your data, and render print-ready PDFs through a single API — pixel-identical from preview to print.
What you can build
Section titled “What you can build”Mail merge in one call
Send an array of records and get one PDF with one document per record — one hundred invoices in a single request, collated into a single file.
Live preview in your app
Drop an iframe into your page and stream form input to it with
postMessage. The preview renders in the visitor’s browser with the same
engine that renders the final PDF.
A data contract, not guesswork
Every published template exposes a JSON Schema derived from its declared
variables. Payloads are validated before rendering — a wrong shape is a
400 with the exact violating paths, never a silently blank document.