Generate invoice PDFs from data

One API call to render an invoice

const invoice = await fetch('https://api.pdfs.build/v2/organizations/org_abc/templates/invoice-primary/render', {
  method: 'POST',
  headers: {
    'Authorization': `Bearer ${API_KEY}`,
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    data: {
      company: 'Acme Corp',
      customer: 'Jane Smith',
      invoice_nr: 'INV-2025-042',
      items: [
        {  description: 'Consulting', hours: 8, rate: 150 },
        {  description: 'Development', hours: 24, rate: 125 }
      ],
      due_date: '2025-03-15'
    }
  })
})

What comes back

A successful render responds with Content-Type: application/pdf and the document itself — no polling, no job queue, no signed URL to fetch afterwards. Stream it straight to your storage bucket, attach it to the email you were already sending, or pipe it back through your own response. Failures come back as JSON with an error object rather than a broken file, so a malformed payload never reaches a customer as a corrupt attachment.

When the invoice is longer than the sample

This is where invoices actually break. A design that looks right with three line items has to survive the customer with ninety, the product name that runs to two lines, and the tax note nobody accounted for. Every invoice design in the library is authored against an explicit contract for exactly that:

• The line-item table repeats its header. Spill onto a fourth page and the column labels come with it, rather than leaving a reader guessing which number is the rate.
• The totals panel stays whole. Subtotal, tax and amount due are never split across a page break — the block moves as a unit or moves to the next page.
• Long descriptions wrap, they do not overflow. Item text grows downward and pushes the table with it; the column widths hold, so the money stays aligned.
• Payment terms land last. Terms and bank details sit after the totals on the final page, wherever that page turns out to be.

Each design's page states its own contract in full, so you can see how it behaves before you commit to it.