[Qgis-user] Convert huge shapefile to small size

[Patrick Dunford]

A shapefile is a vector files, as far as I know. I don't think any 
rasters are stored in this format.

If there is a large volume of data, it may have a great many records 
referencing a large number of features. Vector layers are usually made 
up of a number of points that together form one feature. So practically 
all the data in a vector layer is the coordinates of these points.

The only way of getting it smaller is reduce the number of points, 
reduce the number of features, or maybe there is a format that's compressed?

Tiles depend on the zoom level, you don't need all the resolution at the 
lower scales or zoom levels because the map is just cluttered, you only 
need them when you zoom in.

On 28/07/22 13:46, krishna Ayyala via Qgis-user wrote:
> 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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