Merge Binary Objects from Multiple Items

The workflow JSON

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{
  "nodes": [
    {
      "id": "9d09405e-64a3-47ef-9d46-4942de51444b",
      "name": "When clicking \"Execute Workflow\"",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        400,
        460
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "4fdc396b-07bd-471e-9e62-136300804809",
      "name": "Set URLs",
      "type": "n8n-nodes-base.code",
      "position": [
        620,
        460
      ],
      "parameters": {
        "jsCode": "return [{\n  json: {\n    url: \"https://static.thomasmartens.eu/n8n/file01.jpg\"\n  }\n}, {\n  json: {\n    url: \"https://static.thomasmartens.eu/n8n/file02.jpg\"\n  }\n}, {\n  json: {\n    url: \"https://static.thomasmartens.eu/n8n/file03.jpg\"\n  }\n}]"
      },
      "typeVersion": 1
    },
    {
      "id": "17482568-2117-4a8c-a307-ebf30dc9c560",
      "name": "HTTP Request",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        840,
        460
      ],
      "parameters": {
        "url": "={{ $json.url }}",
        "options": {
          "response": {
            "response": {
              "responseFormat": "file"
            }
          }
        }
      },
      "typeVersion": 4
    },
    {
      "id": "de27f52b-8f7e-4b9c-a097-987db4cef5aa",
      "name": "Merge items",
      "type": "n8n-nodes-base.code",
      "position": [
        1060,
        460
      ],
      "parameters": {
        "jsCode": "let binaries = {}, binary_keys = [];\n\nfor (const [index, inputItem] of Object.entries($input.all())) {\n  binaries[`data_${index}`] = inputItem.binary.data;\n  binary_keys.push(`data_${index}`);\n}\n\nreturn [{\n    json: {\n        binary_keys: binary_keys.join(',')\n    },\n    binary: binaries\n}];\n"
      },
      "typeVersion": 1
    },
    {
      "id": "539fe99d-c557-4e51-bc88-011fb604e1f3",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        580,
        320
      ],
      "parameters": {
        "width": 394,
        "height": 304,
        "content": "## Example data\nThese nodes simply download some example files to work with."
      },
      "typeVersion": 1
    },
    {
      "id": "710fd054-2360-447a-b503-049507c0a3b2",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1000,
        320
      ],
      "parameters": {
        "width": 304,
        "height": 307,
        "content": "## Transformation\nThis is where the magic happens. Multiple items with one binary object each are being transformed into one item with multiple binary objects."
      },
      "typeVersion": 1
    }
  ],
  "connections": {
    "Set URLs": {
      "main": [
        [
          {
            "node": "HTTP Request",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "HTTP Request": {
      "main": [
        [
          {
            "node": "Merge items",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "When clicking \"Execute Workflow\"": {
      "main": [
        [
          {
            "node": "Set URLs",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

About this workflow

Merge Binary Objects On Multiple Items Into A Single Item. Uses manualTrigger, httpRequest, stickyNote. Event-driven trigger; 6 nodes.

Source: https://github.com/Zie619/n8n-workflows — original creator credit. Request a take-down →

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