Convert HTML to PDF and compress files with CustomJS API

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

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.sp...

Best for

Document Extraction automation workflows
intermediate n8n builders looking for reusable templates

Tools used

@custom-js/n8n-nodes-pdf-toolkit.html2pdf, @custom-js/n8n-nodes-pdf-toolkit.compresspdf, n8n-nodes-base.manualtrigger, n8n-nodes-base.code, n8n-nodes-base.stickynote

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by CustomJS.

Original n8n.io source

1.1 Workflow description

Title: Convert HTML to PDF and compress files with CustomJS API
Workflow name: Convert HTML to PDF and compress files with CustomJS API

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

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 PDF files
Code node for handling URL that indicates PDF file.

Workflow Steps:

Manual Trigger:
- Runs with user interaction.
HTML to PDF:
- Request HTML Data
- Convert HTML to PDF
- Request PDF from URL.
Compress Pages from PDF:
- Compress PDF as a binary file.

Usage

Get API key from customJS

Sign up to customJS platform.
Navigate to your profile page
Press "Show" button to get API key

Set Credentials for CustomJS API on n8n

Copy and paste your API key generated from CustomJS here.

Design workflow

A Manual Trigger for starting workflow.
HTTP Request Nodes for downloading PDF files.
Code node for handling URL that indicates PDF file.
Compress PDF files.

You can replace 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 webhook. Simply replace Manual Trigger and Write to Disk nodes.

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - HTML to PDF

Type / Role: @custom-js/n8n-nodes-pdf-toolkit.html2Pdf - html2Pdf
Config choices: Version 1

Block 2 - Compress PDF file

Type / Role: @custom-js/n8n-nodes-pdf-toolkit.CompressPDF - CompressPDF
Config choices: Version 1

Block 3 - When clicking ‘Test workflow’

Type / Role: n8n-nodes-base.manualTrigger - manualTrigger
Config choices: Version 1

Block 4 - Compress PDF file1

Type / Role: @custom-js/n8n-nodes-pdf-toolkit.CompressPDF - CompressPDF
Config choices: Version 1

Block 5 - Set PDF URL

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 6 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 7 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 8 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 9 - Sticky Note3

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

3. Summary Table

Workflow	Convert HTML to PDF and compress files with CustomJS API
Complexity	intermediate
Nodes	9
Categories	Document Extraction
Author	CustomJS
Published	05 May 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/3869/3869.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Document Extraction workflows

Frequently asked questions

What does Convert HTML to PDF and compress files with CustomJS API do?

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.sp...

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Document Extraction use case.

CustomJS

22 workflows

Nodes

@custom-js/n8n-nodes-pdf-toolkit.html2pdf @custom-js/n8n-nodes-pdf-toolkit.compresspdf n8n-nodes-base.manualtrigger n8n-nodes-base.code n8n-nodes-base.stickynote

Complexity

intermediate

Published 05 May 2025

Likes 0

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Install path: /data/workflows/3869/3869.json

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Convert HTML to PDF and compress files with CustomJS API

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Notice

What this workflow does

Requirements

Workflow Steps:

Usage

Get API key from customJS

Set Credentials for CustomJS API on n8n

Design workflow

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - HTML to PDF

Block 2 - Compress PDF file

Block 3 - When clicking ‘Test workflow’

Block 4 - Compress PDF file1

Block 5 - Set PDF URL

Block 6 - Sticky Note

Block 7 - Sticky Note1

Block 8 - Sticky Note2

Block 9 - Sticky Note3

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions