# Generate PDF documents from HTML with PDF Generator API: n8n workflow

> Started by another system calling it, and works across Gmail and Postgres. 10 steps, 1 branch: a working afternoon to understand properly.

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

[Automation library](https://millionrounds.com/workflows) · [Documents and files](https://millionrounds.com/workflows?category=Documents+and+files#library)

# Generate PDF documents from HTML with PDF Generator API

Started by another system calling it, and works across Gmail and Postgres. 10 steps, 1 branch: a working afternoon to understand properly.

Medium

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fgenerate-pdf-documents-from-html-with-pdf-generator-api)

**10 steps** Medium: a working afternoon

**1** Branch: places the flow splits

**0** Loops or waits

**2** Services it connects to

## The flow

Starts it 2 Logic 2 Service 6

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

- 1 **Receive Document Request (Webhook)** Webhook *Starts it*
- 2 **Verify Client Email** Hunter *Service*
- 3 **Email Is Valid?** If *Logic*
- 4 **Load HTML Template** Postgres *Service*
- 5 **Respond – Invalid Email** Respond To Webhook *Starts it*
- 6 **Populate HTML Template** Code *Logic*
- 7 **Convert HTML to PDF** Pdf Generator Api *Service*
- 8 **Upload PDF to Supabase Storage** Http Request *Service*
- 9 **Send PDF to Client Email** Gmail *Service*
- 10 **Record Document Transaction** Postgres *Service*

## How it's built

- **Starts on:** Another system calling it
- **Steps:** 10, with 1 branch
- **Size:** Medium: a working afternoon
- **Connects to:** Gmail, Postgres
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

An n8n account, plus your own Gmail and Postgres accounts. 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. 10 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 10 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-documents-from-html-with-pdf-generator-api)
- **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)[Postgres](https://millionrounds.com/workflows?service=Postgres#library)

## Workflows like it

Also documents and files, with the same services where possible, closest in size first.

- [**Auto-generate and auto-fill business documents** 10 steps · Gmail, Google Drive](https://millionrounds.com/workflow/auto-generate-and-auto-fill-business-documents)
- [**Detect duplicate Google Drive files and log results** 10 steps · Gmail, Google Drive](https://millionrounds.com/workflow/detect-duplicate-google-drive-files-and-log-results)
- [**Hackathon participant badge generator with PDF** 10 steps · Gmail, Google Sheets](https://millionrounds.com/workflow/hackathon-participant-badge-generator-with-pdf)
- [**Validate email hero images with Gmail and Dropbox** 10 steps · Gmail, Google Sheets](https://millionrounds.com/workflow/validate-email-hero-images-with-gmail-and-dropbox)
- [**Parse CVs from emails with OCR and OpenAI** 10 steps · calls a model · Gmail, Notion](https://millionrounds.com/workflow/parse-cvs-from-emails-with-ocr-and-openai)
- [**Rename Gmail attachments with OpenAI** 10 steps · calls a model · Gmail, Google Drive](https://millionrounds.com/workflow/rename-gmail-attachments-with-openai)