AI Email PDF Analysis with Poppler

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 →

{
  "name": "Email pdf analysis with Poppler",
  "nodes": [
    {
      "parameters": {
        "pollTimes": {
          "item": [
            {
              "mode": "everyMinute"
            }
          ]
        },
        "simple": false,
        "filters": {
          "q": "from: andrei@smartclover.ro"
        },
        "options": {
          "downloadAttachments": true
        }
      },
      "type": "n8n-nodes-base.gmailTrigger",
      "typeVersion": 1.3,
      "position": [
        -2320,
        -832
      ],
      "id": "c76e0339-6cc4-4325-9684-864caa130009",
      "name": "Gmail Trigger",
      "credentials": {
        "gmailOAuth2": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "operation": "write",
        "fileName": "=/home/node/user_data/{{ $('Gmail Trigger').item.binary.attachment_0.fileName }}",
        "dataPropertyName": "attachment_0",
        "options": {}
      },
      "type": "n8n-nodes-base.readWriteFile",
      "typeVersion": 1,
      "position": [
        -2064,
        -832
      ],
      "id": "bda77fb9-8178-430b-b5c4-4db21dbc75a9",
      "name": "Read/Write Files from Disk",
      "retryOnFail": false,
      "onError": "continueErrorOutput"
    },
    {
      "parameters": {
        "command": "=pdftotext {{ $json.fileName }} -"
      },
      "type": "n8n-nodes-base.executeCommand",
      "typeVersion": 1,
      "position": [
        -1520,
        -880
      ],
      "id": "7fcc7b6e-a327-47aa-8b15-4b3fce364668",
      "name": "Execute Command"
    },
    {
      "parameters": {
        "operation": "pdf",
        "binaryPropertyName": "attachment_0",
        "options": {}
      },
      "type": "n8n-nodes-base.extractFromFile",
      "typeVersion": 1,
      "position": [
        -1696,
        -496
      ],
      "id": "52340875-fcaf-446e-8c97-ad8c22219d49",
      "name": "Extract from File"
    },
    {
      "parameters": {
        "promptType": "define",
        "text": "=Identify and extract the fields in the provided text in JSON format:\n- Cont\n- Denumirea contului\n- Solduri initiale an - debitoare\n- Solduri initiale an - creditoare\n- Sume precendente - debitoare\n- Sume precendente - creditoare\n- Rulaje perioada - debitoare\n- Rulaje perioada - creditoare\n- Sume totale - debitoare\n- Sume totale - creditoare\n- Solduri finale - debitoare\n- Solduri finale - creditoare\n\nOutput in JSON format. Output only the resulting JSON\nUse the following data as input:\n---\n{{ $json.stdout }}\n---",
        "hasOutputParser": true,
        "batching": {}
      },
      "type": "@n8n/n8n-nodes-langchain.chainLlm",
      "typeVersion": 1.7,
      "position": [
        -1152,
        -864
      ],
      "id": "ed2c1547-6a5e-4a35-9f03-9ef9c17e60aa",
      "name": "Basic LLM Chain"
    },
    {
      "parameters": {
        "options": {}
      },
      "type": "@n8n/n8n-nodes-langchain.lmChatDeepSeek",
      "typeVersion": 1,
      "position": [
        -1280,
        -672
      ],
      "id": "815ce9ca-fae8-49a0-9b48-d9ed9ea18d82",
      "name": "DeepSeek Chat Model",
      "credentials": {
        "deepSeekApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "schemaType": "manual",
        "inputSchema": "{\n  \"$schema\": \"https://json-schema.org/draft/2020-12/schema\",\n  \"$id\": \"https://example.com/accounting-balance-schema.json\",\n  \"title\": \"Accounting Balance Report\",\n  \"description\": \"Schema for Romanian accounting balance report with account details and financial amounts\",\n  \"type\": \"object\",\n  \"properties\": {\n    \"accounts\": {\n      \"type\": \"array\",\n      \"description\": \"Array of accounting records\",\n      \"items\": {\n        \"type\": \"object\",\n        \"properties\": {\n          \"Cont\": {\n            \"type\": \"string\",\n            \"description\": \"Account code\",\n            \"pattern\": \"^[0-9]+$\"\n          },\n          \"Denumirea contului\": {\n            \"type\": \"string\",\n            \"description\": \"Account name/description\"\n          },\n          \"Solduri initiale an - debitoare\": {\n            \"type\": \"string\",\n            \"description\": \"Initial year balance - debit\",\n            \"pattern\": \"^[0-9]+\\\\.[0-9]{2}$\"\n          },\n          \"Solduri initiale an - creditoare\": {\n            \"type\": \"string\",\n            \"description\": \"Initial year balance - credit\",\n            \"pattern\": \"^[0-9]+\\\\.[0-9]{2}$\"\n          },\n          \"Sume precendente - debitoare\": {\n            \"type\": \"string\",\n            \"description\": \"Previous amounts - debit\",\n            \"pattern\": \"^[0-9]+\\\\.[0-9]{2}$\"\n          },\n          \"Sume precendente - creditoare\": {\n            \"type\": \"string\",\n            \"description\": \"Previous amounts - credit\",\n            \"pattern\": \"^[0-9]+\\\\.[0-9]{2}$\"\n          },\n          \"Rulaje perioada - debitoare\": {\n            \"type\": \"string\",\n            \"description\": \"Period turnover - debit\",\n            \"pattern\": \"^[0-9]+\\\\.[0-9]{2}$\"\n          },\n          \"Rulaje perioada - creditoare\": {\n            \"type\": \"string\",\n            \"description\": \"Period turnover - credit\",\n            \"pattern\": \"^[0-9]+\\\\.[0-9]{2}$\"\n          },\n          \"Sume totale - debitoare\": {\n            \"type\": \"string\",\n            \"description\": \"Total amounts - debit\",\n            \"pattern\": \"^[0-9]+\\\\.[0-9]{2}$\"\n          },\n          \"Sume totale - creditoare\": {\n            \"type\": \"string\",\n            \"description\": \"Total amounts - credit\",\n            \"pattern\": \"^[0-9]+\\\\.[0-9]{2}$\"\n          },\n          \"Solduri finale - debitoare\": {\n            \"type\": \"string\",\n            \"description\": \"Final balance - debit\",\n            \"pattern\": \"^[0-9]+\\\\.[0-9]{2}$\"\n          },\n          \"Solduri finale - creditoare\": {\n            \"type\": \"string\",\n            \"description\": \"Final balance - credit\",\n            \"pattern\": \"^[0-9]+\\\\.[0-9]{2}$\"\n          }\n        },\n        \"required\": [\n          \"Cont\",\n          \"Denumirea contului\",\n          \"Solduri initiale an - debitoare\",\n          \"Solduri initiale an - creditoare\",\n          \"Sume precendente - debitoare\",\n          \"Sume precendente - creditoare\",\n          \"Rulaje perioada - debitoare\",\n          \"Rulaje perioada - creditoare\",\n          \"Sume totale - debitoare\",\n          \"Sume totale - creditoare\",\n          \"Solduri finale - debitoare\",\n          \"Solduri finale - creditoare\"\n        ],\n        \"additionalProperties\": false\n      }\n    }\n  },\n  \"required\": [\"accounts\"],\n  \"additionalProperties\": false\n}"
      },
      "type": "@n8n/n8n-nodes-langchain.outputParserStructured",
      "typeVersion": 1.3,
      "position": [
        -896,
        -656
      ],
      "id": "f8c47b7e-0246-4275-a4d6-5a20c04f1f04",
      "name": "Structured Output Parser"
    },
    {
      "parameters": {},
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        -1760,
        -304
      ],
      "id": "c71acd9e-480c-4d7c-a89c-377b3c015650",
      "name": "Stop and Error"
    }
  ],
  "connections": {
    "Gmail Trigger": {
      "main": [
        [
          {
            "node": "Read/Write Files from Disk",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Read/Write Files from Disk": {
      "main": [
        [
          {
            "node": "Execute Command",
            "type": "main",
            "index": 0
          },
          {
            "node": "Extract from File",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Stop and Error",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Extract from File": {
      "main": [
        []
      ]
    },
    "Execute Command": {
      "main": [
        [
          {
            "node": "Basic LLM Chain",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "DeepSeek Chat Model": {
      "ai_languageModel": [
        [
          {
            "node": "Basic LLM Chain",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "Basic LLM Chain": {
      "main": [
        []
      ]
    },
    "Structured Output Parser": {
      "ai_outputParser": [
        [
          {
            "node": "Basic LLM Chain",
            "type": "ai_outputParser",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "6a1e15e9-ac3c-4452-bcca-bfde011d9f40",
  "meta": {
    "templateCredsSetupCompleted": true
  },
  "id": "XJrKZo4QSrffQzfT",
  "tags": []
}

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.

• deepSeekApi
• gmailOAuth2

About this workflow

Email pdf analysis with Poppler. Uses gmailTrigger, readWriteFile, executeCommand, extractFromFile. Event-driven trigger; 8 nodes.

Source: https://github.com/aidamian/n8n-workshop/blob/main/examples/pdf-extraction.json — original creator credit. Request a take-down →

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