This is a misconception: the created PDF file does not contain a rasterized gradient - all objects are still vector-based (PDF supports gradients as well as transparency natively [1]). The yellow rectangle is masked with a white-to-transparent gradient fill (also not a bitmap - the mask is a vector path as well).
> Saving as PDF with rasterised gradient
This is a misconception: the created PDF file does not contain a rasterized gradient - all objects are still vector-based (PDF supports gradients as well as transparency natively [1]). The yellow rectangle is masked with a white-to- transparent gradient fill (also not a bitmap - the mask is a vector path as well).
[1] <http:// wiki.inkscape. org/wiki/ index.php/ Release_ notes/0. 47#PDF. 2C_PostScript. 2C_and_ EPS_export>