{ "edges": [ { "to": "fbd2eb39-1544-4697-8a48-21439fd1eddc", "from": "3855779b-e567-4b44-8ac8-18ea02328f5c", "toPort": "0", "fromPort": "0" }, { "to": "b06c61ed-c72a-434f-8963-8a9d971553e1", "from": "f875b20b-393e-470c-8bf9-3c4cdfad8fb7", "toPort": "0", "fromPort": "0" }, { "to": "4c1e6d44-4f5e-4f4e-a6ad-038860f9e11f", "from": "160ee018-7b7f-40ef-b448-f453e5ffadb2", "toPort": "0", "fromPort": "0" }, { "to": "f875b20b-393e-470c-8bf9-3c4cdfad8fb7", "from": "046da474-268b-4274-9741-6c73fa1cc462", "toPort": "0", "fromPort": "0" }, { "to": "046da474-268b-4274-9741-6c73fa1cc462", "from": "ae88dca5-7d9d-47cc-a26c-99b1fd937476", "toPort": "0", "fromPort": "0" }, { "to": "f1a3b78b-c10f-4595-9339-963b6f298d24", "from": "4c1e6d44-4f5e-4f4e-a6ad-038860f9e11f", "toPort": "0", "fromPort": "0" }, { "to": "160ee018-7b7f-40ef-b448-f453e5ffadb2", "from": "b06c61ed-c72a-434f-8963-8a9d971553e1", "toPort": "0", "fromPort": "0" }, { "to": "10d6aab4-3b05-45e7-a9f2-a724bc4788f6", "from": "b06c61ed-c72a-434f-8963-8a9d971553e1", "toPort": "0", "fromPort": "1" }, { "to": "ae88dca5-7d9d-47cc-a26c-99b1fd937476", "from": "fbd2eb39-1544-4697-8a48-21439fd1eddc", "toPort": "0", "fromPort": "0" } ], "nodes": [ { "id": "4c1e6d44-4f5e-4f4e-a6ad-038860f9e11f", "name": "Extract Image URL", "type": "http", "params": { "url": "={{ $json['Badge URL'] }}", "options": { "response": { "response": { "responseFormat": "file", "outputPropertyName": "badge" } } } }, "position": [ 2912, -112 ] }, { "id": "f875b20b-393e-470c-8bf9-3c4cdfad8fb7", "name": "Badge Design", "type": "integration", "params": { "service": "htmlcsstoimage", "operation": "run", "html_content": "=\n\n\n \n \n \n\n\n

\n \n

\n $\"QR$ \n

\n \n

ID: {{ $json.attendeeId }}

\n \n \n

\n\n", "__originalType": "n8n-nodes-htmlcsstoimage.htmlCssToImage" }, "position": [ 2048, -16 ] }, { "id": "10d6aab4-3b05-45e7-a9f2-a724bc4788f6", "name": "Send Error Alert", "type": "integration", "params": { "sendTo": "admin@example.com", "message": "=\n\n\n \n\n\n

⚠️ Badge Generation Failed

\n \n

A badge generation request has failed.

\n \n

Attendee Details:

\n Name:\n {{ $('Validate & Sanitize').item.json.name }}\n

\n Email:\n {{ $('Validate & Sanitize').item.json.email }}\n

\n Event:\n {{ $('Validate & Sanitize').item.json.event }}\n

\n Role:\n {{ $('Validate & Sanitize').item.json.role }}\n

\n Attendee ID:\n {{ $('Validate & Sanitize').item.json.attendeeId }}\n

\n Timestamp:\n {{ $('Validate & Sanitize').item.json.timestamp }}\n

\n \n

Possible Causes:

HTMLCSStoImage API is down or rate limited
API credentials expired or invalid
Network connectivity issues
Invalid HTML in badge template

\n \n

Action Required:

Check n8n workflow execution logs
Verify HTMLCSStoImage API status
Manually regenerate badge for this attendee
Contact attendee if urgent

\n \n

Workflow Name: Event Badge Generator

n8n Instance: n8n.mediajade.com

\n\n", "options": {}, "service": "gmail", "subject": "⚠️ Badge Generation Failed", "operation": "read" }, "position": [ 2688, 128 ] }, { "id": "f1a3b78b-c10f-4595-9339-963b6f298d24", "name": "Send Badge Email", "type": "integration", "params": { "sendTo": "={{ $json.Email }}", "message": "=\n\n\n \n\n\n

\n \n \n

Hello {{ $json.Name }},

\n \n

Great news! Your personalized event badge for {{ $json.Event }} has been generated successfully.

\n \n

📋 Your Badge Details

\n Name:\n {{ $json.Name }}\n

\n Role:\n {{ $json.Role }}\n

\n Attendee ID:\n {{ $json['Attendee ID'] }}\n

\n Event:\n {{ $json.Event }}\n

\n \n

\n 📥 Download Your Badge\n

\n \n

📌 Important Instructions:

Download your badge using the button above
Print it in color on standard paper OR save it on your phone
Present your badge at the event entrance for check-in
The QR code on your badge will be scanned for quick entry

\n \n

Event Details:

📅 Date: October 25-27, 2025
📍 Venue: Convention Center
🕐 Check-in: Opens 8:00 AM daily

\n \n

If you have any questions or need assistance, please reply to this email or contact our support team.

\n \n

We look forward to seeing you at the event! 🎊

\n \n

Best regards,
\n TechCon 2025 Team

\n \n \n

\n\n", "options": { "attachmentsUi": { "attachmentsBinary": [ { "property": "badge" } ] } }, "service": "gmail", "subject": "=Your Event Badge for {{ $json.Event }} 🎫", "operation": "read" }, "position": [ 3216, -112 ] }, { "id": "160ee018-7b7f-40ef-b448-f453e5ffadb2", "name": "Log to Sheets", "type": "integration", "params": { "columns": { "value": { "Name": "={{ $('Prepare QR URL').item.json.name }}", "Role": "={{ $('Prepare QR URL').item.json.role }}", "Email": "={{ $('Prepare QR URL').item.json.email }}", "Event": "={{ $('Prepare QR URL').item.json.event }}", "Status": "Sent", "Badge URL": "={{ $json.image_url }}", "Timestamp": "={{ $('Prepare QR URL').item.json.timestamp }}", "Attendee ID": "={{ $('Prepare QR URL').item.json.attendeeId }}" }, "schema": [ { "id": "Name", "type": "string", "display": true, "required": false, "displayName": "Name", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Email", "type": "string", "display": true, "required": false, "displayName": "Email", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Event", "type": "string", "display": true, "required": false, "displayName": "Event", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Role", "type": "string", "display": true, "required": false, "displayName": "Role", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Attendee ID", "type": "string", "display": true, "required": false, "displayName": "Attendee ID", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Badge URL", "type": "string", "display": true, "required": false, "displayName": "Badge URL", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Timestamp", "type": "string", "display": true, "required": false, "displayName": "Timestamp", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Status", "type": "string", "display": true, "required": false, "displayName": "Status", "defaultMatch": false, "canBeUsedToMatch": true } ], "mappingMode": "defineBelow", "matchingColumns": [], "attemptToConvertTypes": false, "convertFieldsToString": false }, "options": {}, "service": "googleSheets", "operation": "append", "sheetName": { "__rl": true, "mode": "list", "value": "gid=0", "cachedResultUrl": "https://docs.google.com/spreadsheets/d/YOUR_GOOGLE_SHEETS_ID/edit#gid=0", "cachedResultName": "BadgesLog" }, "documentId": { "__rl": true, "mode": "list", "value": "YOUR_GOOGLE_SHEETS_ID", "cachedResultUrl": "https://docs.google.com/spreadsheets/d/YOUR_GOOGLE_SHEETS_ID/edit?usp=drivesdk", "cachedResultName": "Event Badge Tracker" } }, "position": [ 2672, -112 ] }, { "id": "b06c61ed-c72a-434f-8963-8a9d971553e1", "name": "Is Badge Generated?", "type": "if", "params": { "conditions": { "string": [ { "value1": "={{ $json.image_url }}", "operation": "isNotEmpty" } ] } }, "position": [ 2352, -16 ] }, { "id": "046da474-268b-4274-9741-6c73fa1cc462", "name": "Prepare QR URL", "type": "code", "params": { "jsCode": "// Get attendee data from previous node\nconst data = $input.first().json;\n\n// Create QR code URL that can be used in HTML\nconst qrCodeUrl = `https://api.qrserver.com/v1/create-qr-code/?size=300x300&data=${encodeURIComponent(data.attendeeId)}`;\n\n// Return all data with QR URL\nreturn {\n name: data.name,\n email: data.email,\n event: data.event,\n role: data.role,\n attendeeId: data.attendeeId,\n initials: data.initials,\n eventDate: data.eventDate,\n timestamp: data.timestamp,\n qrCodeUrl: qrCodeUrl\n};" }, "position": [ 1760, -16 ] }, { "id": "ae88dca5-7d9d-47cc-a26c-99b1fd937476", "name": "Generate QR Code", "type": "http", "params": { "url": "https://api.qrserver.com/v1/create-qr-code/", "options": { "response": { "response": { "responseFormat": "file", "outputPropertyName": "qrcode" } } }, "sendQuery": true, "queryParameters": { "parameters": [ { "name": "size", "value": "300x300" }, { "name": "data", "value": "={{ $json.attendeeId }}" } ] } }, "position": [ 1504, -16 ] }, { "id": "fbd2eb39-1544-4697-8a48-21439fd1eddc", "name": "Validate & Sanitize", "type": "code", "params": { "jsCode": "// Get input data from webhook body\nconst webhookData = $input.item.json.body;\n\n// Validation function\nfunction validateEmail(email) {\n const emailRegex = /^[^\\s@]+@[^\\s@]+\\.[^\\s@]+$/;\n return emailRegex.test(email);\n}\n\n// Extract and validate data\nconst name = webhookData.name?.trim() || '';\nconst email = webhookData.email?.trim().toLowerCase() || '';\nconst eventTitle = webhookData.event || 'TechCon 2025';\nconst role = webhookData.role || 'Attendee';\n\n// Check for required fields\nif (!name) {\n throw new Error('Name is required');\n}\n\nif (!email || !validateEmail(email)) {\n throw new Error('Valid email is required');\n}\n\n// Generate unique attendee ID\nconst attendeeId = 'ATD-' + Date.now().toString(36).toUpperCase() + '-' + Math.random().toString(36).substr(2, 4).toUpperCase();\n\n// Capitalize name properly\nconst capitalizedName = name\n .toLowerCase()\n .split(' ')\n .map(word => word.charAt(0).toUpperCase() + word.slice(1))\n .join(' ');\n\n// Get initials for badge\nconst initials = capitalizedName\n .split(' ')\n .map(word => word[0])\n .join('')\n .toUpperCase()\n .substr(0, 2);\n\n// Current date for event\nconst eventDate = 'October 25-27, 2025';\n\n// Return sanitized data\nreturn {\n name: capitalizedName,\n email: email,\n event: eventTitle,\n role: role,\n attendeeId: attendeeId,\n initials: initials,\n eventDate: eventDate,\n timestamp: new Date().toISOString()\n};" }, "position": [ 1232, -16 ] }, { "id": "3855779b-e567-4b44-8ac8-18ea02328f5c", "name": "Webhook", "type": "trigger", "params": { "kind": "n8n-nodes-base.webhook", "path": "new-attendee", "options": {}, "httpMethod": "POST" }, "position": [ 992, -16 ] } ] }

⚠️ Badge Generation Failed

Attendee Details:

Possible Causes:

Action Required:

🎉 Your Event Badge is Ready!

📋 Your Badge Details

📌 Important Instructions:

Generate event badges with QR codes, HTMLCSStoImage, Gmail & Google Sheets