Generate Invoice PDFs From JSON in Node.js Without Templates or Puppeteer

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The article shows how to create an invoice PDF by sending a JSON description to the GetInvoicePDF API, which returns a finished file. A short Node.js script with no dependencies posts the invoice details, including line items, tax rate and accent color, and saves the result as invoice.pdf. The API can alternatively store the PDF and return a private URL that requires the same API key to access. Customers can be sent the PDF, and once payment is received the same data can be resubmitted with a paid flag to produce a receipt stamped PAID. The author notes the approach is unsuitable for pixel-perfect custom layouts or legally structured e-invoice formats such as Factur-X, ZUGFeRD, PEPPOL and FatturaPA.

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