Integration guide

Node.js HTML to PDF API

Convert HTML templates into PDFs in Node.js with one API request. Ideal for invoices, receipts, statements, and report exports.

Install dependencies

npm install node-fetch

Example request

import fs from "node:fs/promises";
import fetch from "node-fetch";

const apiKey = process.env.HTML2PDF_API_KEY;
const auth = Buffer.from(`${apiKey}:`).toString("base64");

const response = await fetch("https://api.html2pdf.online/v1/convert", {
  method: "POST",
  headers: {
    Authorization: `Basic ${auth}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    source: "<html><body><h1>Invoice #1024</h1></body></html>",
  }),
});

if (!response.ok) {
  throw new Error(`Convert failed: ${response.status}`);
}

const pdfBuffer = Buffer.from(await response.arrayBuffer());
await fs.writeFile("invoice.pdf", pdfBuffer);

Production checklist

  • Store API keys in environment variables, never in source code.
  • Use async conversion endpoints for batch jobs and heavy documents.
  • Log request IDs and API errors to debug rendering issues quickly.

Related resources

QuickstartPlaygroundOther Tools