Sorted Cities uses OpenStreetMap to extract all the building foootprint data from your choice of location. It then creates a poster with all the building footprints sorted by size and shown in proportion to each other.
You can use the Sorted Cities OpenStreetMap tool to create your own building footprints poster. Just use the search bar to center the map on your chosen location and press the 'create' button.
Sorted Cities will then create your poster of building footprints. The footer of the poster includes the latitude & longitude of the location shown and the number of building footprints displayed in the poster.
You can download the poster as a PNG image file.