JSON to Invoice PDF

Quick answer

POST your invoice as JSON to /api/generate-invoice with output:"pdf" and you get a PDF back. JSON totals work with no account; a free inv_ key unlocks PDF and UBL output.

Endpoint: POST /api/generate-invoice
Input: A JSON body: from, to, items[], currency, language, template
Output: output: pdf · json · ubl
Auth: JSON output keyless; PDF/UBL need a free inv_ key
SDKs: invovate on npm + PyPI

cURL

The whole thing is one request — JSON in, PDF out:

curl -X POST https://invovate.com/api/generate-invoice \
  -H "Authorization: Bearer inv_your_key" \
  -H "Content-Type: application/json" \
  -d '{"output":"pdf","from":{"name":"Acme LLC"},"to":{"name":"Globex"},"items":[{"description":"Consulting","quantity":2,"unit_price":150,"tax_rate":20}]}' \
  --output invoice.pdf

Node.js

import { Invovate } from "invovate";
const inv = new Invovate({ apiKey: process.env.INVOVATE_API_KEY });
const { hosted_url } = await inv.createPdfLink({
  from: { name: "Acme LLC" }, to: { name: "Globex" },
  items: [{ description: "Consulting", quantity: 2, unit_price: 150, tax_rate: 20 }],
});
console.log(hosted_url);

Python

from invovate import Invovate
inv = Invovate(api_key="inv_your_key")
res = inv.create_pdf_link(
    from_={"name": "Acme LLC"}, to={"name": "Globex"},
    items=[{"description": "Consulting", "quantity": 2, "unit_price": 150, "tax_rate": 20}],
)
print(res["hosted_url"])

Calculate totals without a PDF

Send output:"json" (no key needed) to get a fully-computed invoice — subtotal, per-line and document tax, discounts, shipping, deposit, grand total and balance due — without rendering a file.

Frequently asked questions

Is there an API to make a PDF invoice from JSON?

Yes — POST a JSON invoice to the Invovate API with output:"pdf" and it returns a PDF (or a 7-day hosted link).

Do I need an account?

JSON totals work with no account. PDF and UBL output use a free inv_ key from invovate.com/auth.

Which languages and formats?

11 languages (incl. Arabic RTL, Japanese, Hindi) and three outputs: PDF, JSON and UBL 2.1 XML.

Not regulated e-invoicing. Invovate generates invoice documents (PDF, JSON, UBL 2.1) but is not a regulated electronic-invoice transmission service — no Peppol / Factur-X / ZUGFeRD / XRechnung / NF-e compliance or government-network delivery. UBL export is for interoperability and archival only.