{ "id": "o018cyB8genb6ONB", "meta": { "templateCredsSetupCompleted": true }, "name": "6-Utility-Certificate-Creator&Validation", "tags": [ { "id": "YOUR-ID", "name": "YOUR-ID", "createdAt": "2025-11-23T13:36:13.729Z", "updatedAt": "2025-11-23T13:36:13.729Z" } ], "nodes": [ { "id": "613c5389-2f80-44c9-8ec1-043d02d720d7", "name": "Insert_Certificaton", "type": "n8n-nodes-base.dataTable", "position": [ 320, -224 ], "parameters": { "columns": { "value": { "Name": "={{ $('Webhook_Creation').item.json.headers.name }}", "Surname": "={{ $('Webhook_Creation').item.json.headers.surname }}", "CertificationID": "={{ $('Generate_Certification_ID').item.json.id }}" }, "schema": [ { "id": "Name", "type": "string", "display": true, "removed": false, "readOnly": false, "required": false, "displayName": "Name", "defaultMatch": false }, { "id": "Surname", "type": "string", "display": true, "removed": false, "readOnly": false, "required": false, "displayName": "Surname", "defaultMatch": false }, { "id": "CertificationID", "type": "string", "display": true, "removed": false, "readOnly": false, "required": false, "displayName": "CertificationID", "defaultMatch": false } ], "mappingMode": "defineBelow", "matchingColumns": [], "attemptToConvertTypes": false, "convertFieldsToString": false }, "options": {}, "dataTableId": { "__rl": true, "mode": "list", "value": "Your_ID", "cachedResultUrl": "/projects/jmCdsRSQMosgYP5V/datatables/Your_ID", "cachedResultName": "Certifications" } }, "typeVersion": 1, "alwaysOutputData": true }, { "id": "7b690565-bc2e-4c50-9e34-5368972be90f", "name": "Generate_Certification_ID", "type": "n8n-nodes-base.code", "position": [ -352, -240 ], "parameters": { "jsCode": "const uniqueId =\n Date.now().toString(36).toUpperCase() +\n Math.random().toString(36).substring(2, 8).toUpperCase();\n\nreturn [{ id: uniqueId }];\n" }, "typeVersion": 2 }, { "id": "ee3e5ab4-7d0a-41d9-b72c-0d1e071c9142", "name": "Find_Certification_By_ID", "type": "n8n-nodes-base.dataTable", "position": [ -144, -240 ], "parameters": { "filters": { "conditions": [ { "keyName": "CertificationID", "keyValue": "={{ $json.id }}" } ] }, "operation": "get", "returnAll": true, "dataTableId": { "__rl": true, "mode": "list", "value": "ZyOrfuHDK22tXq81", "cachedResultUrl": "/projects/YOUR_ID/datatables/ZyOrfuHDK22tXq81", "cachedResultName": "Certifications" } }, "typeVersion": 1, "alwaysOutputData": true }, { "id": "554946dd-0444-4e50-b132-983b44e931e5", "name": "Certification_ID_Exists", "type": "n8n-nodes-base.if", "position": [ 64, -240 ], "parameters": { "options": {}, "conditions": { "options": { "version": 2, "leftValue": "", "caseSensitive": true, "typeValidation": "strict" }, "combinator": "and", "conditions": [ { "id": "416a8c8a-b9bd-4044-9987-b3320c09efd4", "operator": { "type": "string", "operation": "empty", "singleValue": true }, "leftValue": "=Object", "rightValue": "={{ $json }}" } ] } }, "typeVersion": 2.2 }, { "id": "848bddc2-4362-40b6-a8e0-18511f9b5c23", "name": "Generate_PDF", "type": "@pdfgeneratorapi/n8n-nodes-pdf-generator-api.pdfGeneratorApi", "position": [ 528, -224 ], "parameters": { "resource": "conversion", "htmlContent": "=\n\n\n \n \n Certificate of Achievement\n\n\n\n
\n \n

CERTIFICATE

\n \n

OF ACHIEVEMENT

\n \n

Is proudly presented to:

\n \n
\n

{{ $('Webhook_Creation').item.json.headers.name }} {{ $('Webhook_Creation').item.json.headers.surname }}

\n
\n \n

\n For successful completion and outstanding performance in the course:\n
\n \"{{ $('Webhook_Creation').item.json.headers.course }}\"\n

\n \n
\n \n
\n

\n {{ $('Generate_Certification_ID').item.json.id }}\n

\n
\n

\n Candidate ID\n

\n
\n \n
\n

\n {{ $today.toFormat('dd/MM/yyyy') }}\n

\n
\n

\n Date\n

\n
\n \n
\n\n
\n\n\n", "conversionOptions": { "orientation": "landscape", "conversionOutput": "file" } }, "credentials": { "pdfGeneratorApi": { "name": "" } }, "typeVersion": 1 }, { "id": "03f873c2-f9b0-409c-bff0-4d32f5ed6efd", "name": "Email_Certification", "type": "n8n-nodes-base.gmail", "position": [ 752, -224 ], "parameters": { "sendTo": "={{ $('Webhook_Creation').item.json.headers.email }}", "message": "Attached you find your new certification!", "options": { "attachmentsUi": { "attachmentsBinary": [ { "property": "document.pdf" } ] } }, "subject": "Your certification is ready!" }, "credentials": { "gmailOAuth2": { "name": "" } }, "typeVersion": 2.1 }, { "id": "aed81c3b-10ce-4d98-9b6c-c890c71ab815", "name": "Webhook_Check", "type": "n8n-nodes-base.webhook", "position": [ -592, 224 ], "parameters": { "path": "certificationscheck", "options": {}, "httpMethod": "POST", "responseMode": "responseNode" }, "typeVersion": 2.1 }, { "id": "71b9f653-4574-4bf2-b9ce-660c083d0a85", "name": "Find_Certification_By_ID1", "type": "n8n-nodes-base.dataTable", "position": [ -352, 224 ], "parameters": { "filters": { "conditions": [ { "keyName": "CertificationID", "keyValue": "={{ $json.headers.id }}" } ] }, "operation": "get", "returnAll": true, "dataTableId": { "__rl": true, "mode": "list", "value": "ZyOrfuHDK22tXq81", "cachedResultUrl": "/projects/jmCdsRSQMosgYP5V/datatables/ZyOrfuHDK22tXq81", "cachedResultName": "Certifications" } }, "typeVersion": 1, "alwaysOutputData": true }, { "id": "e35823bf-189c-4192-85ca-24010ba3ed09", "name": "Certification_Exists", "type": "n8n-nodes-base.if", "position": [ -144, 224 ], "parameters": { "options": {}, "conditions": { "options": { "version": 2, "leftValue": "", "caseSensitive": true, "typeValidation": "strict" }, "combinator": "and", "conditions": [ { "id": "416a8c8a-b9bd-4044-9987-b3320c09efd4", "operator": { "type": "string", "operation": "equals" }, "leftValue": "={{ $json.CertificationID }}", "rightValue": "={{ $('Webhook_Check').item.json.headers.id }}" } ] } }, "typeVersion": 2.2 }, { "id": "98428e2a-330b-4995-b177-74ce6ec41a35", "name": "Respond_Found", "type": "n8n-nodes-base.respondToWebhook", "position": [ 96, 160 ], "parameters": { "options": {}, "respondWith": "json", "responseBody": "={\n \"ok\": \"true\",\n \"name\": \"{{ $('Find_Certification_By_ID1').item.json.Name }}\",\n \"surname\": \"{{ $('Find_Certification_By_ID1').item.json.Surname }}\"\n}" }, "typeVersion": 1.4 }, { "id": "15e115bd-3d35-4805-9806-85d6e80a7c21", "name": "Respond_NotFound", "type": "n8n-nodes-base.respondToWebhook", "position": [ 96, 288 ], "parameters": { "options": {}, "respondWith": "json", "responseBody": "{\n \"ok\": \"false\"\n}" }, "typeVersion": 1.4 }, { "id": "38d50087-20f5-43aa-acbd-0893dafe8381", "name": "Sticky Note1", "type": "n8n-nodes-base.stickyNote", "position": [ -672, -448 ], "parameters": { "color": 7, "width": 256, "height": 368, "content": "## Creation \n## Webhook input\n\nReceives name, surname, course and email via HTTP POST on `/certifications`. \nStarts the certificate creation flow.\n" }, "typeVersion": 1 }, { "id": "9672b65b-832d-4496-9f50-d75b5432fcc2", "name": "Sticky Note2", "type": "n8n-nodes-base.stickyNote", "position": [ -400, -448 ], "parameters": { "color": 7, "width": 864, "height": 368, "content": "## Creation \u2013 Generate & validate ID\n\nGenerates a random CertificationID, checks the Data Table for duplicates and only continues when the ID is unique. \nIf the ID already exists, the flow loops until a free one is found.\n" }, "typeVersion": 1 }, { "id": "00c13ad1-1026-4b0f-b880-89d901a1ee11", "name": "Sticky Note4", "type": "n8n-nodes-base.stickyNote", "position": [ 480, -448 ], "parameters": { "color": 7, "width": 448, "height": 368, "content": "## Creation \u2013 Save, PDF & email\n\nSaves the learner record with the CertificationID to the Data Table, generates the certificate PDF from an HTML template and emails it to the learner.\n" }, "typeVersion": 1 }, { "id": "741f9beb-f922-441b-9249-c6a06da55571", "name": "Sticky Note6", "type": "n8n-nodes-base.stickyNote", "position": [ -672, 32 ], "parameters": { "color": 7, "width": 256, "height": 320, "content": "## Check \u2013 Webhook input\n\nReceives a CertificationID via HTTP POST on `/certificationscheck` and starts the verification flow.\n" }, "typeVersion": 1 }, { "id": "1c7f6487-80e4-45d2-a676-645f66c4bfaf", "name": "Webhook_Creation", "type": "n8n-nodes-base.webhook", "position": [ -592, -240 ], "parameters": { "path": "certifications", "options": {}, "httpMethod": "POST", "responseMode": "lastNode" }, "typeVersion": 2.1 }, { "id": "28750e3a-7cec-4a45-8a5a-cb87dbd3181d", "name": "Sticky Note7", "type": "n8n-nodes-base.stickyNote", "position": [ -400, 32 ], "parameters": { "color": 7, "width": 432, "height": 320, "content": "## Check \u2013 Look up ID\n\nSearches the Certifications Data Table for the submitted CertificationID and branches depending on whether a matching record exists.\n" }, "typeVersion": 1 }, { "id": "18468a33-fdb7-4602-a995-29d9e1c5aca5", "name": "Sticky Note8", "type": "n8n-nodes-base.stickyNote", "position": [ 272, 176 ], "parameters": { "color": 7, "width": 432, "height": 176, "content": "## Check \u2013 Responses\n\nReturns JSON to the caller. \nIf the ID is found: `ok: true` plus name and surname. \nIf not found: `ok: false` so the client can show an \u201cinvalid certification\u201d message.\n" }, "typeVersion": 1 }, { "id": "3bedbbcb-cd61-4c54-872d-cfd54df9e991", "name": "Sticky Note10", "type": "n8n-nodes-base.stickyNote", "position": [ -1344, -448 ], "parameters": { "width": 640, "height": 560, "content": "## Certifications \u2013 Creator & Checker\n\n## How it works\nThis workflow manages the full lifecycle of a training certificate. \n`/certifications` receives learner details, generates a unique CertificationID and checks that it does not exist yet. \nIf the ID is free, the workflow stores the record, builds a PDF certificate and emails it to the learner. \n\n`/certificationscheck` lets you verify a certificate later. \nThe webhook receives a CertificationID, looks it up in the same Data Table and returns a simple JSON response that frontends or other services can use to show \u201cvalid\u201d or \u201cnot found\u201d.\n\n## Setup steps\n1. Create a Data Table (e.g. **Certifications**) with Name, Surname, CertificationID and any extra fields.\n2. Configure the PDF Generator node with your account API and adjust the HTML template to your branding.\n3. Connect your email account (Gmail/SMTP) in **Email_Certification**.\n4. Deploy the `/certifications` and `/certificationscheck` webhooks and use their public URLs.\n5. Test creation and verification with a few sample requests before going live.\n" }, "typeVersion": 1 } ], "active": false, "settings": { "executionOrder": "v1" }, "versionId": "898197be-08ab-4488-85ee-a9a1b688cb1c", "connections": { "Generate_PDF": { "main": [ [ { "node": "Email_Certification", "type": "main", "index": 0 } ] ] }, "Webhook_Check": { "main": [ [ { "node": "Find_Certification_By_ID1", "type": "main", "index": 0 } ] ] }, "Webhook_Creation": { "main": [ [ { "node": "Generate_Certification_ID", "type": "main", "index": 0 } ] ] }, "Insert_Certificaton": { "main": [ [ { "node": "Generate_PDF", "type": "main", "index": 0 } ] ] }, "Certification_Exists": { "main": [ [ { "node": "Respond_Found", "type": "main", "index": 0 } ], [ { "node": "Respond_NotFound", "type": "main", "index": 0 } ] ] }, "Certification_ID_Exists": { "main": [ [ { "node": "Generate_Certification_ID", "type": "main", "index": 0 } ], [ { "node": "Insert_Certificaton", "type": "main", "index": 0 } ] ] }, "Find_Certification_By_ID": { "main": [ [ { "node": "Certification_ID_Exists", "type": "main", "index": 0 } ] ] }, "Find_Certification_By_ID1": { "main": [ [ { "node": "Certification_Exists", "type": "main", "index": 0 } ] ] }, "Generate_Certification_ID": { "main": [ [ { "node": "Find_Certification_By_ID", "type": "main", "index": 0 } ] ] } } }