Convert HTML to Image in Node.js

const html = `
<div style="padding:48px;background:#0f172a;color:white;
           font-family:sans-serif;border-radius:12px;width:800px">
  <h1 style="font-size:36px">Invoice #INV-2026-042</h1>
  <p style="color:#94a3b8">Total: $129.00</p>
</div>
`;

const res = await fetch("https://renderpix.dev/v1/render", {
  method: "POST",
  headers: {
    "X-API-Key": "rpx_your_key",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({ html, width: 800, height: 400, format: "png" }),
});

const buffer = Buffer.from(await res.arrayBuffer());
fs.writeFileSync("invoice.png", buffer);
console.log(`Saved ${buffer.length / 1024 | 0} KB`);