A PDF generation API for your application’s documents.

From application data to a finished PDF

1. Choose a document blueprint

   Start with a public example, register your own blueprint, or embed one in a job during development.

2. Supply the values

   Use the job’s vars object for customer details, line items, and other data referenced by your blueprint.

3. Handle the result

   Your app receives a webhook when the job completes or fails. A completed job includes a signed download URL.

Explore the webhook payload and lifecycle →

What is JayCode?

JayCode is a document generation language expressed as JSON. A blueprint defines page layout, content, styles, and resources. Jay expressions add computed values and document logic; a job supplies the data for each render.

Read the blueprint guide

Try a small, self-contained job

This inline blueprint renders a heading and a personalized paragraph. Use it as a starting point when submitting a job through the client.

{
  "lang": "JayCode",
  "type": "job",
  "outputFileName": "receipt-001.pdf",
  "blueprint": {
    "lang": "JayCode",
    "type": "blueprint",
    "body": [
      {
        "type": "heading",
        "level": 2,
        "value": "Receipt"
      },
      {
        "type": "paragraph",
        "value": "{{ 'Thank you, ' + customerName + '!' }}"
      }
    ]
  },
  "vars": {
    "customerName": "Jane Smith"
  }
}

See Python client setup and submission examples →

Choose your next step