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Download and merge multiple PDFs from URLs with the CustomJS API

n8nn8n7 modulesv1.0
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This n8n template demonstrates how to download multiple PDF files from public URLs and merge them into a single PDF using the PDF Toolkit from www.customjs.space. @custom-js/n8n-nodes-pdf-toolkit What this workflow does - Defines an array of PDF URLs. - Splits the array to process each URL individually. - Downloads each PDF using an HTTP Request. - Merges all downloaded PDFs using the Merge PDF node from the @custom-js/n8n-nodes-pdf-toolkit. - Writes the final merged PDF to disk. Requirements A

At a glance

Download and merge multiple PDFs from URLs with the CustomJS API is a ready-made n8n workflow you import as a workflow JSON file — no build required. It connects UNSUPPORTED_SLUG_FORMAT. It's free to download. Follow the 5-step import below to go live in minutes.

Platform
n8n
Connects
UNSUPPORTED_SLUG_FORMAT
Modules
7
Price
Free
Version
v1.0
Download and merge multiple PDFs from URLs with the CustomJS API workflow diagram

About this workflow

This n8n template demonstrates how to download multiple PDF files from public URLs and merge them into a single PDF using the PDF Toolkit from www.customjs.space. @custom-js/n8n-nodes-pdf-toolkit What this workflow does - Defines an array of PDF URLs. - Splits the array to process each URL individually. - Downloads each PDF using an HTTP Request. - Merges all downloaded PDFs using the Merge PDF node from the @custom-js/n8n-nodes-pdf-toolkit. - Writes the final merged PDF to disk. Requirements A free CustomJS account. An API Key saved in n8n as credentials of type CustomJS account. Notice Community nodes can only be installed on self-hosted instances of n8n. 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 paster your API key generated from CustomJS here. Design workflow - A Manual Trigger for starting workflow. - A code node that returns URLs of PDF files as an array - Split Out node for concurrent processing - HTTP node for downloading PDF file locally - Merge PDFs node for merging files - Write to Disk node for saving merged PDF file. 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. Perfect for - Bundling reports or invoices. - Generating document sets from external sources. - Automating PDF handling without writing custom code.

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How to import this n8n workflow

  1. 1

    Download the workflow JSON file after purchase.

  2. 2

    Open n8n → click the menu → Import from File.

  3. 3

    Select the downloaded JSON and import.

  4. 4

    Set up credentials for each node that requires them.

  5. 5

    Click Execute Workflow to test, then activate.

Setup guide

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