[kwstas]

I use pdftk on linux to do most of this type of stuff. For example if you want pages 1 -10 :

` pdftk {{input.pdf}} cat {{1-10}} output {{output.pdf}} `

If you want to do multiple files you may want to burst them and recombine. If you are doing it for file size purposes there may be better options though, as I dont think there is any way to split in 500kB chunks for example.

There supposedely is a windows version [here](https://www.pdflabs.com/tools/pdftk-the-pdf-toolkit/). I haven't used it though.