HTML to PDF

Client call (via BFF)

const response = await fetch('/api/html-to-pdf', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    html: documentHtml,
    filename: 'invoice.pdf',
    disposition: 'attachment',
    orientation: 'portrait',
  }),
});
const blob = await response.blob();

Inline PDF (restricted)

disposition: 'inline' is allowed only when the request passes host allowlist checks (dev hosts). Configure via handler options in advanced deployments.

Concurrency

Rendering uses a slot semaphore (HTML_TO_PDF_MAX_CONCURRENT). Heavy load: scale horizontally or lower concurrency per instance.

Troubleshooting

See @sumx/ssr-pdf.