{
"meta": {
"instanceId": "408f9fb9940c3cb18ffdef0e0150fe342d6e655c3a9fac21f0f644e8bedabcd9",
"templateCredsSetupCompleted": true
},
"nodes": [
{
"id": "1083afcb-1257-45a3-b331-d93fb8769548",
"name": "Schedule Trigger",
"type": "n8n-nodes-base.scheduleTrigger",
"position": [
-840,
0
],
"parameters": {
"rule": {
"interval": [
[]
]
}
},
"typeVersion": 1.1999999999999999555910790149937383830547332763671875
},
{
"id": "c3ec0759-a3d1-4866-978a-bfe4f49ee81d",
"name": "Get Hash of Contents",
"type": "n8n-nodes-base.crypto",
"position": [
380,
0
],
"parameters": {
"value": "={{ $json.data }}",
"dataPropertyName": "hash"
},
"typeVersion": 1
},
{
"id": "4ad92ad3-6f99-43a5-9a61-374adb3b28f7",
"name": "Notify of Change",
"type": "n8n-nodes-base.gmail",
"position": [
1220,
0
],
"webhookId": "cc4cbee1-ad57-48fb-810a-b21880357ab0",
"parameters": {
"sendTo": "jim@example.com",
"message": "=site: {{ $('Variables').first().json.url }}\ndate: {{ $now.toISO() }}\nhash: {{ $json.hash }}\ncontents: {{ $json.gdrive }}",
"options": [],
"subject": "=Change detected for {{ $('Variables').first().json.url }}",
"emailType": "text"
},
"credentials": {
"gmailOAuth2": {
"id": "Sf5Gfl9NiFTNXFWb",
"name": "Gmail account"
}
},
"typeVersion": 2.100000000000000088817841970012523233890533447265625
},
{
"id": "9385242a-86b1-4624-ada9-949851b68054",
"name": "Markdown",
"type": "n8n-nodes-base.markdown",
"position": [
200,
0
],
"parameters": {
"html": "={{ $json.content.trim() }}",
"options": []
},
"typeVersion": 1
},
{
"id": "663b6ba2-cbf9-44ea-a062-f88ccb0640c1",
"name": "Variables",
"type": "n8n-nodes-base.set",
"position": [
-460,
0
],
"parameters": {
"options": [],
"assignments": {
"assignments": [
{
"id": "fa706ed3-7425-4f0e-9590-d9478b4e6692",
"name": "url",
"type": "string",
"value": "https:\/\/x.com\/en\/tos"
}
]
}
},
"typeVersion": 3.399999999999999911182158029987476766109466552734375
},
{
"id": "2ef69fff-4d7a-439a-b317-ea5fa3ce7869",
"name": "Only New Hashes",
"type": "n8n-nodes-base.removeDuplicates",
"position": [
560,
0
],
"parameters": {
"options": {
"historySize": 1
},
"operation": "removeItemsSeenInPreviousExecutions",
"dedupeValue": "={{ $json.hash }}"
},
"typeVersion": 2
},
{
"id": "93e13d80-a26f-408f-be4e-b582ab9fd9bd",
"name": "Log Record",
"type": "n8n-nodes-base.googleSheets",
"position": [
1040,
0
],
"parameters": {
"columns": {
"value": {
"hash": "={{ $('Get Hash of Contents').first().json.hash }}",
"gdrive": "=https:\/\/drive.google.com\/file\/d\/{{ $json.id }}\/view?usp=sharing",
"website": "={{ $('Variables').first().json.url }}",
"date of change": "={{ $now.toISO() }}"
},
"schema": [
{
"id": "website",
"type": "string",
"display": true,
"required": false,
"displayName": "website",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "hash",
"type": "string",
"display": true,
"required": false,
"displayName": "hash",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "date of change",
"type": "string",
"display": true,
"required": false,
"displayName": "date of change",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "gdrive",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "gdrive",
"defaultMatch": false,
"canBeUsedToMatch": true
}
],
"mappingMode": "defineBelow",
"matchingColumns": [],
"attemptToConvertTypes": false,
"convertFieldsToString": false
},
"options": [],
"operation": "append",
"sheetName": {
"__rl": true,
"mode": "list",
"value": "gid=0",
"cachedResultUrl": "https:\/\/docs.google.com\/spreadsheets\/d\/1K13OBMicH-ebhvJRYo4sHiOuHd1KIX2jiFxBLWy2UOk\/edit#gid=0",
"cachedResultName": "Sheet1"
},
"documentId": {
"__rl": true,
"mode": "list",
"value": "1K13OBMicH-ebhvJRYo4sHiOuHd1KIX2jiFxBLWy2UOk",
"cachedResultUrl": "https:\/\/docs.google.com\/spreadsheets\/d\/1K13OBMicH-ebhvJRYo4sHiOuHd1KIX2jiFxBLWy2UOk\/edit?usp=drivesdk",
"cachedResultName": "86. Webpage Changes Tracker"
}
},
"credentials": {
"googleSheetsOAuth2Api": {
"id": "XHvC7jIRR8A2TlUl",
"name": "Google Sheets account"
}
},
"typeVersion": 4.5
},
{
"id": "dea15963-61de-4371-b716-7683e0e703a9",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-540,
-160
],
"parameters": {
"color": 7,
"width": 620,
"height": 380,
"content": "## 1. Fetch a Webpage Contents\n[Read more about the HTTP request node](https:\/\/docs.n8n.io\/integrations\/builtin\/core-nodes\/n8n-nodes-base.httprequest)"
},
"typeVersion": 1
},
{
"id": "bcb1c0b1-fc77-4417-a9c0-6299ce8ca33e",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
100,
-160
],
"parameters": {
"color": 7,
"width": 640,
"height": 400,
"content": "## 2. Use Hashing to Detect Changes\n[Learn more about the cryptography node](https:\/\/docs.n8n.io\/integrations\/builtin\/core-nodes\/n8n-nodes-base.crypto\/)"
},
"typeVersion": 1
},
{
"id": "eda51de6-80a2-42b1-83ba-66c551911c45",
"name": "Fetch Webpage",
"type": "n8n-nodes-base.httpRequest",
"position": [
-280,
0
],
"parameters": {
"url": "={{ $json.url }}",
"options": [],
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "User-Agent",
"value": "Mozilla\/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/134.0.0.0 Safari\/537.36"
}
]
}
},
"typeVersion": 4.20000000000000017763568394002504646778106689453125
},
{
"id": "8aa998f1-1558-4b54-a95a-7be9360a819a",
"name": "Extract Contents",
"type": "n8n-nodes-base.html",
"position": [
-100,
0
],
"parameters": {
"options": [],
"operation": "extractHtmlContent",
"extractionValues": {
"values": [
{
"key": "content",
"cssSelector": ".ct07",
"returnValue": "html"
}
]
}
},
"typeVersion": 1.1999999999999999555910790149937383830547332763671875
},
{
"id": "ecb60054-563c-4c0b-949c-abdcd3896f6b",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
760,
-160
],
"parameters": {
"color": 7,
"width": 660,
"height": 400,
"content": "## 3. Notify when Changes Occur\n[Read more about the Gmail node](https:\/\/docs.n8n.io\/integrations\/builtin\/app-nodes\/n8n-nodes-base.gmail)\n"
},
"typeVersion": 1
},
{
"id": "30774606-5e63-4d73-9894-ba14d5b1fc46",
"name": "Take a Snapshot",
"type": "n8n-nodes-base.googleDrive",
"position": [
860,
0
],
"parameters": {
"name": "={{\n$('Variables').item.json.url\n .extractDomain()\n .replace('.','_')\n + $json.hash\n + '.md'\n}}",
"content": "={{ $json.data }}",
"driveId": {
"__rl": true,
"mode": "list",
"value": "My Drive"
},
"options": [],
"folderId": {
"__rl": true,
"mode": "list",
"value": "1BbP5HRnjNkCvcDRFFg1bm0sNYBGZM6AU",
"cachedResultUrl": "https:\/\/drive.google.com\/drive\/folders\/1BbP5HRnjNkCvcDRFFg1bm0sNYBGZM6AU",
"cachedResultName": "86. Monitor Webpage Changes"
},
"operation": "createFromText"
},
"credentials": {
"googleDriveOAuth2Api": {
"id": "yOwz41gMQclOadgu",
"name": "Google Drive account"
}
},
"typeVersion": 3
},
{
"id": "9ae563ea-49a3-4dcc-9190-8746650018aa",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1040,
-760
],
"parameters": {
"width": 440,
"height": 980,
"content": "## Try it out\n### This n8n template can monitor and detect changes to a webpage's contents and notify you only when a change occurs.\n\nGreat to keep an eye on and track publicly available documents such as company TOS, government policy or competitor pages.\n\n### How it works\n* A scheduled trigger is used so we can run everyday to automate this process.\n* A website page is then fetched with the HTTP request node and the contents we want to track are extracted using the HTML node.\n* To detect changes, we generate a hash on the contents with the cryptography node and compare it with previously seen hashes using the \"remove duplicates\" node. If the hash was seen before, the workflow stops here.\n* Finally, when new changes are detected a copy of the contents are uploaded to Google Drive and a logged into a Google sheet. A notification email can also be sent if action is required.\n\n### How to use\n* Update the URL you want to track in the node named \"variables\" and ensure the HTML node has updated selectors to get the content you want.\n* Ensure the timezone is set correctly when using the Scheduled Trigger node.\n\n### Need Help?\nJoin the [Discord](https:\/\/discord.com\/invite\/XPKeKXeB7d) or ask in the [Forum](https:\/\/community.n8n.io\/)!"
},
"typeVersion": 1
}
],
"pinData": [],
"connections": {
"Markdown": {
"main": [
[
{
"node": "Get Hash of Contents",
"type": "main",
"index": 0
}
]
]
},
"Variables": {
"main": [
[
{
"node": "Fetch Webpage",
"type": "main",
"index": 0
}
]
]
},
"Log Record": {
"main": [
[
{
"node": "Notify of Change",
"type": "main",
"index": 0
}
]
]
},
"Fetch Webpage": {
"main": [
[
{
"node": "Extract Contents",
"type": "main",
"index": 0
}
]
]
},
"Only New Hashes": {
"main": [
[
{
"node": "Take a Snapshot",
"type": "main",
"index": 0
}
]
]
},
"Take a Snapshot": {
"main": [
[
{
"node": "Log Record",
"type": "main",
"index": 0
}
]
]
},
"Extract Contents": {
"main": [
[
{
"node": "Markdown",
"type": "main",
"index": 0
}
]
]
},
"Schedule Trigger": {
"main": [
[
{
"node": "Variables",
"type": "main",
"index": 0
}
]
]
},
"Get Hash of Contents": {
"main": [
[
{
"node": "Only New Hashes",
"type": "main",
"index": 0
}
]
]
}
}
}
