PDF変換を n8nワークフローで自動化

# n8n Workflow: Gmail → Convert DOCX to PDF → Save to Google Drive
# Step 1: Gmail trigger receives email with DOCX attachment
# Step 2: HTTP Request node converts the attachment

curl -X POST \
  https://api.convertfilefast.com/v2/convert/word-to-pdf \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "file=@report.docx" \
  --output report.pdf

# HTTP 200 OK — Content-Type: application/pdf
# Step 3: Google Drive node uploads report.pdf to your folder

# n8n Code Node: Process Gmail attachment and convert to PDF
import requests
import base64

# attachment_data comes from Gmail node binary output
attachment_data = items[0]["binary"]["attachment"]["data"]
file_bytes = base64.b64decode(attachment_data)

response = requests.post(
    "https://api.convertfilefast.com/v2/convert/word-to-pdf",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    files={"file": ("report.docx", file_bytes, "application/octet-stream")}
)

# Return PDF bytes for Google Drive node
return [{"binary": {"data": {"data": base64.b64encode(response.content)}}}]

// n8n Code Node (JavaScript): Gmail → DOCX to PDF → Google Drive

// Get attachment binary from Gmail trigger node
const attachmentBinary = items[0].binary.attachment;
const fileBuffer = Buffer.from(attachmentBinary.data, "base64");

const formData = new FormData();
formData.append("file", new Blob([fileBuffer]), "report.docx");

const response = await fetch(
  "https://api.convertfilefast.com/v2/convert/word-to-pdf",
  { method: "POST",
    headers: { "Authorization": "Bearer YOUR_API_KEY" },
    body: formData }
);

const pdfBuffer = Buffer.from(await response.arrayBuffer());
// Pass pdfBuffer to Google Drive node
return [{ binary: { data: { data: pdfBuffer.toString("base64") } } }];

// n8n Workflow: Gmail → DOCX to PDF → Google Drive
// HTTP Request Node configuration
{
  "method": "POST",
  "url": "https://api.convertfilefast.com/v2/convert/word-to-pdf",
  "contentType": "multipart-form-data",
  "bodyParameters": {
    "parameters": [{
      "name": "file",
      "parameterType": "formBinaryData",
      "inputDataFieldName": "attachment"
    }]
  },
  "options": {
    "response": {
      "responseFormat": "file",
      "outputPropertyName": "data"
    }
  }
}

// Connect output to Google Drive → Upload File node
// Set inputDataFieldName: 'data', fileName: 'report.pdf'