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workflows/Convert HTML to PDF and Return via Webhook using CustomJS API-3331/3331-convert-html-to-pdf-and-return-via-webhook-using-customjs-api.webp
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workflows/Convert HTML to PDF and Return via Webhook using CustomJS API-3331/convert_html_to_pdf_and_return_via_webhook_using_customjs_api.json
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{"meta":{"instanceId":"fcf18fc485cc336a31bc65574fd28e124660f468281b7aad773616b17903afe6","templateCredsSetupCompleted":true},"nodes":[{"id":"37bd6cc9-3cc4-442e-94c1-42972c0fce0d","name":"Webhook","type":"n8n-nodes-base.webhook","position":[80,0],"webhookId":"060dbacf-0feb-43d4-b4ac-44011a7dd1a4","parameters":{"path":"060dbacf-0feb-43d4-b4ac-44011a7dd1a4","options":{},"responseMode":"responseNode"},"typeVersion":2},{"id":"3c05c0e4-7121-46d0-b35c-fc39cdd35ae7","name":"Respond to Webhook","type":"n8n-nodes-base.respondToWebhook","position":[580,0],"parameters":{"options":{},"respondWith":"binary"},"typeVersion":1.1},{"id":"3f5ba2a7-148d-4921-b2ca-9dee17a2b278","name":"HTML to PDF","type":"@custom-js/n8n-nodes-pdf-toolkit.html2Pdf","position":[340,0],"parameters":{"htmlInput":"<h1>Hello CustomJS!</h1>\n<h2>CustomJS provides the missing toolset for your no-code projects</h2>"},"credentials":{"customJsApi":{"id":"SZkqeEHVYyWhaGem","name":"CustomJS account"}},"typeVersion":1}],"pinData":{},"connections":{"Webhook":{"main":[[{"node":"HTML to PDF","type":"main","index":0}]]},"HTML to PDF":{"main":[[{"node":"Respond to Webhook","type":"main","index":0}]]}}}

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workflows/Convert HTML to PDF and Return via Webhook using CustomJS API-3331/metada-3331.json
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{"user_name":"CustomJS","user_username":"customjs","user_bio":"","user_links":"https://www.customjs.space","user_avatar":"https://gravatar.com/avatar/942ecdadf17761bc7f516b67fb0f3617809720caf8912cfd1815ed2a9f8b9ad3?r=pg&d=retro&size=200","url":"https://n8nworkflows.xyz/workflows/convert-html-to-pdf-and-return-via-webhook-using-customjs-api-3331\n","url_n8n":"https://n8n.io/workflows/3331","nodeTypes":{"n8n-nodes-base.webhook":{"count":1},"n8n-nodes-base.respondToWebhook":{"count":1},"@custom-js/n8n-nodes-pdf-toolkit.html2Pdf":{"count":1}},"categories":[{"id":20,"name":"Building Blocks"}]}

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workflows/Convert HTML to PDF and Return via Webhook using CustomJS API-3331/readme-3331.md
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Convert HTML to PDF and Return via Webhook using CustomJS API
https://n8nworkflows.xyz/workflows/convert-html-to-pdf-and-return-via-webhook-using-customjs-api-3331
# Convert HTML to PDF and Return via Webhook using CustomJS API
### 1. Workflow Overview
This workflow is designed to convert incoming HTML content into a styled PDF document and return it directly via a webhook response. It is ideal for use cases where an external system or user submits HTML content via an HTTP request and expects a PDF file in return without intermediate storage or manual intervention.
The workflow consists of three main logical blocks:
- **1.1 Input Reception:** Receives incoming HTTP requests containing HTML content through a webhook.
- **1.2 HTML to PDF Conversion:** Processes the HTML content using the CustomJS API to generate a PDF document.
- **1.3 Response Delivery:** Sends the generated PDF back to the original requester as a binary HTTP response.
---
### 2. Block-by-Block Analysis
#### 1.1 Input Reception
- **Overview:**
This block listens for incoming HTTP requests on a specific webhook URL. It captures the HTML content sent by the client and initiates the workflow.
- **Nodes Involved:**
- Webhook
- **Node Details:**
**Webhook**
- *Type and Role:* HTTP Webhook Trigger node; entry point for the workflow.
- *Configuration:*
- Path: `060dbacf-0feb-43d4-b4ac-44011a7dd1a4` (unique webhook endpoint).
- Response Mode: `responseNode` (delays response until the Respond to Webhook node executes).
- Accepts any HTTP method by default (can be restricted if needed).
- *Expressions/Variables:* Receives incoming request data, including HTML content in the body or query parameters.
- *Input/Output:* No input; outputs the received data to the next node.
- *Version Requirements:* Uses version 2 of the webhook node, supporting advanced response modes.
- *Potential Failures:*
- Invalid or missing HTML content in the request.
- Unauthorized or malformed requests if security is not configured.
- *Sub-workflow:* None.
#### 1.2 HTML to PDF Conversion
- **Overview:**
Converts the received HTML content into a PDF document using the CustomJS API node designed for HTML-to-PDF transformation.
- **Nodes Involved:**
- HTML to PDF
- **Node Details:**
**HTML to PDF**
- *Type and Role:* CustomJS PDF Toolkit node (`@custom-js/n8n-nodes-pdf-toolkit.html2Pdf`); performs HTML to PDF conversion.
- *Configuration:*
- HTML Input: Static example HTML provided (`<h1>Hello CustomJS!</h1><h2>CustomJS provides the missing toolset for your no-code projects</h2>`).
- Credentials: Uses CustomJS API credentials configured in n8n for authentication.
- *Expressions/Variables:* In the current setup, the HTML content is hardcoded; for dynamic input, this should be replaced with an expression referencing webhook data (e.g., `{{$json["body"]["html"]}}`).
- *Input/Output:* Receives HTML content from the webhook node; outputs binary PDF data.
- *Version Requirements:* Version 1 of the CustomJS node; ensure compatibility with the installed node version.
- *Potential Failures:*
- API authentication errors (invalid or expired API key).
- HTML content errors causing conversion failure.
- Network timeouts or API unavailability.
- *Sub-workflow:* None.
#### 1.3 Response Delivery
- **Overview:**
Sends the generated PDF back to the original webhook requester as a binary HTTP response, completing the request-response cycle.
- **Nodes Involved:**
- Respond to Webhook
- **Node Details:**
**Respond to Webhook**
- *Type and Role:* Respond to Webhook node; sends HTTP response back to the client.
- *Configuration:*
- Respond With: `binary` (sends binary data, i.e., the PDF file).
- No additional headers or status codes configured explicitly (defaults apply).
- *Expressions/Variables:* Receives binary PDF data from the HTML to PDF node.
- *Input/Output:* Input from HTML to PDF node; no output as this ends the workflow.
- *Version Requirements:* Version 1.1; supports binary responses.
- *Potential Failures:*
- Missing or malformed binary data input.
- Client disconnects before response is sent.
- *Sub-workflow:* None.
---
### 3. Summary Table
| Node Name | Node Type | Functional Role | Input Node(s) | Output Node(s) | Sticky Note |
|-------------------|-------------------------------------|--------------------------|---------------|-------------------|------------------------------------------------------------------------------------------------|
| Webhook | n8n-nodes-base.webhook | Input Reception | - | HTML to PDF | Accepts incoming HTTP requests with HTML content; triggers the workflow. |
| HTML to PDF | @custom-js/n8n-nodes-pdf-toolkit.html2Pdf | HTML to PDF Conversion | Webhook | Respond to Webhook | Uses CustomJS API to convert HTML to PDF; requires CustomJS API key credentials. |
| Respond to Webhook| n8n-nodes-base.respondToWebhook | Response Delivery | HTML to PDF | - | Sends generated PDF as binary response to the original webhook request. |
---
### 4. Reproducing the Workflow from Scratch
1. **Create Webhook Node**
- Add a **Webhook** node.
- Set the HTTP Method to accept (default is all).
- Set the Path to a unique identifier (e.g., `060dbacf-0feb-43d4-b4ac-44011a7dd1a4`).
- Set Response Mode to `responseNode` to delay response until workflow finishes.
- Save the node.
2. **Create HTML to PDF Node**
- Add a **CustomJS HTML to PDF** node (`@custom-js/n8n-nodes-pdf-toolkit.html2Pdf`).
- Connect the Webhook node’s output to this node’s input.
- In the node parameters, set the HTML input:
- For testing, use static HTML such as:
```html
<h1>Hello CustomJS!</h1>
<h2>CustomJS provides the missing toolset for your no-code projects</h2>
```
- For dynamic input, replace with an expression referencing the webhook data, e.g., `{{$json["body"]["html"]}}`.
- Under Credentials, select or create **CustomJS API** credentials:
- Obtain an API key from https://www.customjs.space after signup.
- In n8n, create new credentials of type CustomJS API and enter the API key.
- Save the node.
3. **Create Respond to Webhook Node**
- Add a **Respond to Webhook** node.
- Connect the HTML to PDF node’s output to this node’s input.
- Set the response type to `binary` to send the PDF file.
- Save the node.
4. **Connect Nodes**
- Ensure the connections are:
- Webhook → HTML to PDF → Respond to Webhook.
5. **Activate Workflow**
- Save and activate the workflow.
- Test by sending an HTTP POST request to the webhook URL with HTML content in the body (if dynamic input is configured).
- The response should be a PDF file generated from the HTML.
---
### 5. General Notes & Resources
| Note Content | Context or Link |
|-------------------------------------------------------------------------------------------------|-------------------------------------------------|
| CustomJS API provides a no-code toolkit for HTML to PDF conversion integrated into n8n. | https://www.customjs.space |
| Workflow requires a self-hosted n8n instance to securely manage API credentials and webhook. | n8n documentation |
| Example HTML input for testing: `<h1>Hello CustomJS!</h1><h2>CustomJS provides the missing toolset for your no-code projects</h2>` | Provided in workflow description |
| For detailed setup of CustomJS API credentials in n8n, refer to the provided screenshots. | Attached images in original workflow description |
---
This documentation fully describes the workflow’s structure, node configurations, and operational logic, enabling reproduction, modification, and troubleshooting by advanced users or automation agents.