I'd like to build a heatmap of places I visited during the last two month.

I have Google location history json file, but the only site I can google out is broken.

Any advice?

@engelbart "the only site I can google out is broken"
Can you clarify that? You have location data, you want to build a heat map, but i do not understand how you are trying to do that relating to that sentence.

@admitsWrongIfProven I found a site https://locationhistoryvisualizer.com/
but it's broken because Google changed data format.