Render API

Render design templates as PNG, JPG, WebP, AVIF, or PDF with the jsontoimg API and MCP tools.

jsontoimg turns design templates into PNG, JPG, WebP, AVIF, and PDF files. Send JSON overrides for text, colors, and layers — get a finished asset back.

Start with the Quick Start. Design in J2I Studio, then generate images or PDFs.

Get started

Quick Start

API key, first render, curl

Importing templates

Create a template and name layers for the API

Changelog

Breaking changes, announcements, and notable updates

Design

J2I Studio

Visual editor, layer names, API tab

Generate

Image generation

PNG, JPG, WebP, AVIF

PDF generation

Multi-page PDFs from templates

Integrations

n8n

Official community node — templates, renders, batches

WordPress

Official plugin — Gutenberg block, shortcode, featured images

HTTP from your stack

Zapier, Make, Sheets, Airtable — any HTTP POST

MCP

Drive renders from Cursor, Claude, and VS Code

SDKs & Reference

Node.js

Official TypeScript SDK

Python

Call the HTTP API from Python

PHP

Call the HTTP API from PHP

Errors

Status codes and machine-readable codes

Code examples

curl, Node, Python, PHP