How to Backup Placemarks in Google Maps

Google doesn’t give you a link to export placemarks that you add to a saved map, but you can change the ‘output’ parameter in the iframe URL from ’embed’ to ‘kml’ to download an XML file with all of the map details, including the placemarks and custom icons. I got an error when trying to open the URL directly in a browser, but it worked fine when calling it inside an iframe tag.

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