Can Blender render to vector (swf, svg)?

Support Compositing and Post Processing
1
2

no but you could use inkscape vector autotrace to take a bitmap and transform it in svg

3

Can output both… :eyebrowlift2:

VRM: Vector Rendering Method (SVG)
Sflender (SWF), you will need to search the plugins/scripts forum for the lastest version that works with blender v2.42+.