Webpage Change Detection & Alerts with Google Suite and Hash Tracking
n8n template #3366Summary
Use templateThis n8n template can monitor and detect changes to a webpage's contents and notify you only when a change occurs. Great to keep an eye on and track publicly available documents such as company TOS, government policy or competitor pages. How it works A scheduled trigger is used so we can run everyday to automate this process. A website page is then fetched with the HTTP request node and the contents we want to track are extracted using the HTML node. 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. Finally, when new changes are d
How to set it up
- Open template #3366 on n8n.io and click Use for free, or copy the template JSON and paste it onto an empty canvas in n8n.
- Create 4 credentials under Credentials → Add credential: Google Sheets, Google Drive, Crypto, Gmail. Then open each of those nodes and pick the credential.
- Click Execute workflow and step through each node's output to confirm the data looks right.
- Toggle the workflow to Active so its trigger runs on its own.
Hand off to your agent
Prompt
Help me set up the n8n workflow "Webpage Change Detection & Alerts with Google Suite and Hash Tracking" (https://n8n.io/workflows/3366). It uses: Google Sheets, HTTP Request, Google Drive, Crypto, Gmail, HTML. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.
Paste into Claude Code and it will do the rest.
Apps and nodes
Questions
Yes. Jimleuk published it free on n8n.io as a verified creator, and it has 2,582 views. It runs on n8n Cloud or a self-hosted n8n instance.
Google Sheets, Google Drive, Crypto, Gmail. The other 2 nodes are built into n8n.
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