How to generate GIS Maps without any browser specific library?

I need to generate a GIS map showing some points and polygons. This map generation process has to run in the background so that every day at a certain time of the day a map is made and stored at a certain location in the file system.

I don't think leaflet can be used for this as it runs on the browser. Not sure how will this happen in QGIS also....any light in this direction will be helpful.

My requirement is to generate a HTML report which contains a map. I cannot do it on the browser because the user will not use the browser and want the report to be inn his mailbox every day automatically.

I will be using node js to generate HTML.

How can this be achieved? Please save my life.

Thanks

via harsh