Convert HTML to PDF and Compress Files with CustomJS API

![workflow.png](fileId:1268) This n8n template demonstrates how to convert HTML into a PDF, compress the generated PDF, and return it as a binary response using the PDF Toolkit from www.customjs.space. ### Notice Community nodes can only be installed on self-hosted instances of n8n. [@custom-js/n8n-nodes-pdf-toolkit](https://www.npmjs.com/package/@custom-js/n8n-nodes-pdf-toolkit) ### What this workflow does - **Convert** the requested HTML to PDF. - **Compress** the PDF file. - **Use** a Code node to handle URLs pointing to PDF files if they exceed 6MB. - **Compress** the PDF pages. ### Requirements - **Self-hosted** n8n instance - **CustomJS API key** for compressing PDF files. - **HTML** Data to convert to PDF files - **Code node** for handling URLs that indicate a PDF file. ### Workflow Steps: 1. **Manual Trigger**: Runs with user interaction. 2. **HTML to PDF**: Request HTML Data - Convert HTML to PDF - Request PDF from URL. 3. **Compress Pages from PDF**: Compress PDF as a binary file. --- ### Usage ### Get API key from [customJS](https://www.customjs.space) - Sign up to the customJS platform. - Navigate to your profile page. - Press the Show button to get your API key. ![1.png](fileId:1269) ### Set Credentials for CustomJS API on n8n Copy and paste your API key generated from CustomJS here. ![2.png](fileId:1267) ### Design workflow - A Manual Trigger for starting the workflow. - HTTP Request Nodes for downloading PDF files. - Code node for handling URLs that indicate a PDF file. - Compress PDF files. You can replace the logic for triggering and returning results. For example, you can trigger this workflow by calling a webhook and get a result as a response from the webhook. Simply replace the Manual Trigger and Write to Disk nodes.

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Convert HTML to PDF and Compress Files with CustomJS API
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Last updated September 5, 2026
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How to import this workflow into n8n

  1. 1Purchase or download the workflow to get the n8n workflow JSON file.
  2. 2In your n8n instance, open Workflows and choose "Import from File" (or paste the JSON with Ctrl+V on the canvas).
  3. 3Open each node marked with a credential warning and connect your own accounts and API keys.
  4. 4Run the workflow once manually to verify the data flow, then toggle it to Active.

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