Rendlet guides

Last updated: 2026-10-26. Every code sample on this page was run against the live API with the sandbox key on that date.

Step-by-step guides with code we ran against the live API. Every example works as-is with the public sandbox key.

HTML to PDF in Node.js
HTML to PDF in Python
Invoice PDFs from JSON or HTML

Comparisons: Rendlet vs self-hosted Puppeteer · Rendlet vs wkhtmltopdf · Rendlet vs other PDF APIs. Reference: docs and OpenAPI 3.1.

Try it on your own HTML. The sandbox renders a real PDF with no signup (5 a day per network, 1 page, watermarked). A free key gives 100 documents a month, up to 10 pages each, with no watermark.

Open the sandbox → Get a free key · Pricing