From XYZ tiles in browser, drag Openstreetmap to Layers

In left “Browser” pane, Vector Tiles > New Generic Connection

Put in a layer name, the URL https://indianopenmaps.fly.dev/google-buildings/{z}/{x}/{y}.pbf, and a min and max zoom like 7 and 14.

- Don’t worry, QGIS will still show the data when you zoom deeper than 14.
- This is just for telling qgis till what level vector data is available.
- Check with the tile layer publisher what their max zoom is.
- It’s usually useless to have smaller min-zoom value, as the tile server will anyways give redacted data at those levels.
- If you want to extract the whole data for your region, you better be seeing the map at at least the specified max zoom so that you don’t miss out any shapes.

Use “Select features by area” or a variant of that to select the features you want.

- You can use Shift / Ctrl to move around the map and add more shapes to the selection.
- Note: stay on a higher/deeper zoom (ie, you should not zoom out too much) so that the shapes aren’t redacted in your view.
- If you zoom out, what vector tile tech does is: it drops some shapes or does simplification / aggregation so that it doesn’t need to load up all the data over the larger area.

Menu > Edit > Copy Features

Menu > Edit > Paste Features As > New Vector Layer

In the box that opens, select geojson or your preferred format, choose a folder / filename

- Remeber to change the CRS to WGS 84 / EPSG 4326 : That’ll give you lat/lon values. The 3857 one will give huge numbers in your shapefile.

You can now drag-drop your newly created .geojson file onto https://geojson.io to independently verify that you’ve got the correct data. It’ll also be carrying any metadata / attributes that the original vector tile layer was having.