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Is there a browser / plugin / app to auto-reload page and show differences between previous content and new (between 2 loads or from first one to last). The differences ideally should be shown for a few seconds and/or removed on action.

e.g. reload a news page every min and highlight new articles.

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Try this plugin for firefox https://addons.mozilla.org/en-US/firefox/addon/pagediff/

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This looks nice but is there something that also reload the page every N seconds + no need to click anything to show diff? –  Alex Aug 7 '12 at 0:29

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