仕事効率化

Alert on Web Page Changes

Compare two page responses five minutes apart and notify a Telegram chat when the content changes.

Setup

Connect Telegram and set the destination chat ID in Notify in Telegram. Set the same public page URL in Fetch the page and Fetch the page again. In n8n configure the same URL in both HTTP nodes and the Telegram connection and chat ID. Enable one format.

Behavior

Every five minutes, each run fetches the page, waits five minutes and fetches it again. It sends “Something got changed” when the two response texts differ; unchanged text sends nothing. Pages containing timestamps or other dynamic content can trigger frequent alerts. The schedule can start another run while the previous run is waiting. Open Flow starts at the minute boundary; n8n uses a fixed second within that minute. Requests must succeed. Open Flow does not follow redirects, so use the final page URL; n8n follows its HTTP node settings. A failed or uncertain Telegram send is not automatically repeated. Check the destination before rerunning.

Inspiration & credits

Changes to the source

Compare the first response with the second response; the source condition mistakenly refers to the first response twice.
Replace the sample Telegram chat ID with a configurable value and require successful page requests.

Adapted from Monitor a web page for changes with Telegram in Zie619/n8n-workflows. The source export does not identify a separate template author or license.

The collection’s MIT notice is pinned at a later revision. This is the collection notice at that revision; it does not establish a separate original template author’s license. Our changes are listed above; see repository licensing.

MIT License

Copyright (c) 2025 Zie619

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