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How to get notified when a web page changes (without writing a scraper)

You want to know when a page changes: a "registration opens soon" notice, a competitor's pricing table, a changelog with no RSS, a government page that says "updates will be posted here".

  • Check for existing RSS or Atom feeds using specific patterns in page source.
  • If no feed exists, use view-source test to locate keywords or monitor JSON response.

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