Document-as-Code Engine

Document-as-Code.
Deterministic rendering.

Define documents in JSON using an open spec, validate authorings, and generate PDF/HTML via API.

Try Playground Read the Spec

Free trial: 50 docs/day. No credit card.

Built for Developers

Everything you need to define, validate, and render documents programmatically.

Open Spec (v1)

Versioned JSON schema, examples, changelog. Open source.

Deterministic Output

Canonical full model ensures consistent printed output across formats.

Profiles + Styles

Reuse styles via stylesId and inject defaults via profiles.

How it works

From authoring to rendered output in four deterministic steps.

Authoring JSON

Define your document

Profile + Normalize

Apply defaults & validate

Full Canonical Model

Single source of truth

Render

PDF / HTML output

The full canonical model is the single source of truth. Once normalized, rendering is deterministic — the same input always produces the same output, whether PDF or HTML.

Playground

Explore the spec interactively. Edit, validate, normalize, and preview — all in the browser.

JSON editor with examples
Validate against schema (show errors with JSON paths)
Normalize authoring to full canonical model
Preview HTML and generate PDF

Open Playground

playground.1doc.dev

{

"version": "1doc/v1",

"document": {

"title": "Sample Invoice",

"sections": [...]

}

API Trial keys in minutes

Get started with the rendering API. No credit card required.

Auth via Bearer token
Rate limits per key
Daily quota included in free trial

curl-example.sh

POST https://api.1doc.example/v1/render/pdf
Authorization: Bearer $API_KEY
Content-Type: application/json

{
  "version": "1doc/v1",
  "document": { ... }
}