[Qgis-user] Convert huge shapefile to small size

[Nicolas Cadieux]

Hi,

There is a distinct possibility that the 5GB shape file is corrupt or that it will be if you manipulate it.  It’s too big for the normal shape file format.  I would first save it as a geopackage then stat looking at why the file is so big.  

Unless shapes can be simplified without loosing resolution (keep a back up always), you might have to split the file using a field to make multiple files (example splitting a lake file by state).  You may look at the data types.  Perhaps they can be simplified (ex int16 vs float64 for a filed that has no decimal values…

Try compressing the resulting file.

Nicolas Cadieux
https://gitlab.com/njacadieux

> Le 27 juill. 2022 à 22:47, krishna Ayyala via Qgis-user <qgis-user at lists.osgeo.org> a écrit :
> 
> 
> Hello,
> I have a shapefile of 5GB in size. Is it possible to convert this shapefile to a smaller size file? It can be any format, not necessarily a shapefile. But, preferably a vector format. I tried to convert it into tiles, but that didn't work as it was losing the resolution. I am looking to convert this 5GB size file to about 500MB.
> 
> Regards.
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