Workflow: formulate an n8n flow to perform Schedule Removeduplicates Create Webhook
Integrations: crypto, gmail, googleDrive, googleSheets, html, httpRequest, markdown, removeDuplicates, scheduleTrigger, set, stickyNote

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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": "={{ $json.url }}", "options": {}, "sendHeaders": true, "headerParameters": {"parameters": [{"name": "User-Agent", "value": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36"}]}}, "typeVersion": 4.2}, {"id": "8aa998f1-1558-4b54-a95a-7be9360a819a", "name": "Extract Contents", "type": "n8n-nodes-base.html", "position": [-100, 0], "parameters": {"options": {}, "operation": "extractHtmlContent", "extractionValues": {"values": [{"key": "content", "cssSelector": ".ct07", "returnValue": "html"}]}}, "typeVersion": 1.2}, {"id": "ecb60054-563c-4c0b-949c-abdcd3896f6b", "name": "Sticky Note2", "type": "n8n-nodes-base.stickyNote", "position": [760, -160], "parameters": {"color": 7, "width": 660, "height": 400, "content": "## 3. Notify when Changes Occur\n[Read more about the Gmail node](https://docs.n8n.io/integrations/builtin/app-nodes/n8n-nodes-base.gmail)\n"}, "typeVersion": 1}, {"id": "30774606-5e63-4d73-9894-ba14d5b1fc46", "name": "Take a Snapshot", "type": "n8n-nodes-base.googleDrive", "position": [860, 0], "parameters": {"name": "={{\n$('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}]]}}}