# Generate PDF billing documents from webhook JSON with Acrewity: n8n workflow

> Started by another system calling it, and works across Gmail. 9 steps, 1 branch: a working afternoon to understand properly.

Source: https://millionrounds.com/workflow/generate-pdf-billing-documents-from-webhook-json-with-acrewi (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Money admin](https://millionrounds.com/workflows?category=Money+admin#library)

# Generate PDF billing documents from webhook JSON with Acrewity

Started by another system calling it, and works across Gmail. 9 steps, 1 branch: a working afternoon to understand properly.

Medium

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fgenerate-pdf-billing-documents-from-webhook-json-with-acrewi)

**9 steps** Medium: a working afternoon

**1** Branch: places the flow splits

**0** Loops or waits

**1** Service it connects to

## The flow

Starts it 3 Logic 3 Service 3

The steps in the order they run, from what starts it.

- 1 **Receive order data** Webhook *Starts it*
- 2 **Workflow configuration** Set *Logic*
- 3 **Build document HTML** Code *Logic*
- 4 **Is the request valid?** If *Logic*
- 5 **Convert document to PDF** Acrewity *Service*
- 6 **Reject bad request** Respond To Webhook *Starts it*
- 7 **Convert PDF to file** Convert To File *Service*
- 8 **Email document to customer** Gmail *Service*
- 9 **Confirm delivery** Respond To Webhook *Starts it*

## How it's built

- **Starts on:** Another system calling it
- **Steps:** 9, with 1 branch
- **Size:** Medium: a working afternoon
- **Connects to:** Gmail
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

An n8n account, plus your own Gmail account. You connect your own accounts after importing it; none are included.

What starts it?

It starts on another system calling it.

Does it use AI?

No. Every step is fixed logic or a call to a service, so it does the same thing every time.

How long does it take to set up?

Plan an afternoon. 9 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

**Before you run it**

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 9 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fgenerate-pdf-billing-documents-from-webhook-json-with-acrewi)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[Gmail](https://millionrounds.com/workflows?service=Gmail#library)

## Workflows like it

Also money admin, with the same services where possible, closest in size first.

- [**Automate medical billing with Google Sheets and Gmail** 9 steps · Gmail, Google Sheets](https://millionrounds.com/workflow/automate-medical-billing-with-google-sheets-and-gmail)
- [**Detect duplicate invoice PDFs from Gmail with Google Sheets** 9 steps · Gmail, Google Sheets](https://millionrounds.com/workflow/detect-duplicate-invoice-pdfs-from-gmail-with-google-sheets)
- [**Freelance client reporting + invoice automation with Gmail** 9 steps · Gmail, Google Sheets](https://millionrounds.com/workflow/freelance-client-reporting-invoice-automation-with-gmail)
- [**Generate and email PDF quotes from Airtable with Gmail** 9 steps · Airtable, Gmail](https://millionrounds.com/workflow/generate-and-email-pdf-quotes-from-airtable-with-gmail)
- [**Generate monthly invoice PDFs from Google Sheets with Gmail** 9 steps · Gmail, Google Drive](https://millionrounds.com/workflow/generate-monthly-invoice-pdfs-from-google-sheets-with-gmail)
- [**Send PDF payment receipts with Stripe and EmitForge** 9 steps · Gmail, Google Drive](https://millionrounds.com/workflow/send-pdf-payment-receipts-with-stripe-and-emitforge)