I want to convert my Geotiff map into the shapefile.

For this purpose, I used the GDAL->Raster Conversion -> Polygonize option.

enter image description here

I have the status "Processing algorithm" for nearly 2 hours!

I found the similar problem here:

Long Time for conversion raster file to vector in QGIS

but the guy had the file over 1GB. I already clipped my Geotiff map trimming down the size to 30MB.

Why does it take so long then?

Have I missed something?

Or shall I use other options...

Converting Raster to vector and creating polygons based on each pixel using QGIS

enter image description here

  • Can you show us a screenshot of your raster? How complex is it? Oct 22 '20 at 10:00
  • This is the Ordnance Survey map covering the hamlet. See above
    – MKR
    Oct 22 '20 at 10:12

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