How to decrease file size of exported plots while keeping labels sharp

Question

When exporting rather complicated plots (especially ListDensityPlot) as a PDF or EPS (for publication, for example), the resulting file size can be quite large. For

Answer 1

If you are exporting as PDF, EPs or WMF, then the text should remain as vectors even if you have a rasterized component to the graphics.

I think the trick is to set the number of plot points to some low number in the ListDensityPlot command and then export as PDF as normal.