Generate GPX and KMZ files from your Google Maps saved places to import as bookmarks in Organic Maps, or use anywhere you'd like. This tool generates everything locally in your browser and does not upload any data.
You can retrieve a Saved Places.json
file by navigating to "Your data in Maps" in your Google Account settings or by accessing this page, then pressing "Download your Maps data."
Read about why Organic Maps is the open-source offline map you need to ditch Google Maps.