How to (easily) draw outline according to an uploaded pixel graphic

Hi there!
Probably I have a wrong idea of how to solve my problem or I use the wrong keywords looking for the following - maybe someone knows help anyway: In the end I need a closed polygone path that represents the boundary of an area. As model I have a pixel graphic or even an svg vector file whose outer outline is Germanys outline. So I thought there must be a way to

  • either upload that svg to an OSM, transpareny 50%, match it with Germany by scaling/rotating etc. and then draw the boundary by hand
  • or even better: le the paths be geo-referenced automatically

I don’t have time and brain to introduce myself into QGis and its plug-in FreehandRasterGeoreferencer with which it seems to be possible…

Any other ideas for GIS layperson like me?

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Ce sujet de discussion accompagne la publication sur https://community.openstreetmap.org/t/how-to-easily-draw-outline-according-to-an-uploaded-pixel-graphic/5707