Hi Alexander,
Please see:
Test data(input/output/QGIS)
5077-TopoJson -TopoJson.zip (9.3 KB)
If the input is not valid - this is .json extension , please give me valid .json sample for TopoJson
that I will make full…..."Topology", "bbox": [0,0,10,10], "transform": { "scale": [0.01,0.01],...– required root element. "transform" – scales and translates integer‑encoded...