This workflow corresponds to n8n.io template #3281 — we link there as the canonical source.

This workflow follows the HTTP Request → Readwritefile recipe pattern — see all workflows that pair these two integrations.

The workflow JSON

Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →

Download .json

{
  "meta": {
    "templateCredsSetupCompleted": true
  },
  "nodes": [
    {
      "id": "19f32c25-df26-426d-8e28-f1d29c8571b1",
      "name": "Split Out",
      "type": "n8n-nodes-base.splitOut",
      "position": [
        -200,
        -240
      ],
      "parameters": {
        "options": {},
        "fieldToSplitOut": "data"
      },
      "typeVersion": 1
    },
    {
      "id": "7360c3f9-2e11-4839-b105-ecab66a39af2",
      "name": "HTTP Request1",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        20,
        -240
      ],
      "parameters": {
        "url": "={{ $json.data }}",
        "options": {}
      },
      "typeVersion": 4.2
    },
    {
      "id": "49cb0c7b-c9d8-4bf1-afa5-5afab9e7967e",
      "name": "Read/Write Files from Disk2",
      "type": "n8n-nodes-base.readWriteFile",
      "position": [
        460,
        -240
      ],
      "parameters": {
        "options": {},
        "fileName": "test.pdf",
        "operation": "write"
      },
      "typeVersion": 1
    },
    {
      "id": "05ef1b18-481d-40f8-a6b3-712bb9ba2b6f",
      "name": "Read/Write Files from Disk3",
      "type": "n8n-nodes-base.readWriteFile",
      "position": [
        680,
        -240
      ],
      "parameters": {
        "options": {},
        "fileSelector": "test.pdf"
      },
      "typeVersion": 1
    },
    {
      "id": "c8f0971c-e1e0-4add-83cb-932902f80b56",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -640,
        -240
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "b83c51ea-9afc-411a-baad-429776e843f3",
      "name": "PDF Array",
      "type": "n8n-nodes-base.code",
      "position": [
        -420,
        -240
      ],
      "parameters": {
        "jsCode": "return { data: [\n  \"https://www.intewa.com/fileadmin/documents/pdf-file.pdf\", \"https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf\"\n]}"
      },
      "typeVersion": 2
    },
    {
      "id": "b122b6e4-2dfa-4f1f-8547-36ba91ca93f9",
      "name": "Merge PDF",
      "type": "@custom-js/n8n-nodes-pdf-toolkit.mergePdfs",
      "position": [
        240,
        -240
      ],
      "parameters": {},
      "credentials": {
        "customJsApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1
    }
  ],
  "connections": {
    "Merge PDF": {
      "main": [
        [
          {
            "node": "Read/Write Files from Disk2",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "PDF Array": {
      "main": [
        [
          {
            "node": "Split Out",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Split Out": {
      "main": [
        [
          {
            "node": "HTTP Request1",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "HTTP Request1": {
      "main": [
        [
          {
            "node": "Merge PDF",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Read/Write Files from Disk2": {
      "main": [
        [
          {
            "node": "Read/Write Files from Disk3",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "When clicking \u2018Test workflow\u2019": {
      "main": [
        [
          {
            "node": "PDF Array",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

Credentials you'll need

Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.

customJsApi

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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.

Source: https://n8n.io/workflows/3281/ — original creator credit. Request a take-down →

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The workflow JSON

Credentials you'll need

About this workflow

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