SVG simplification tool

 usvg is a command-line utility to simplify SVG files based on a static
 SVG Full 1.1 subset. It converts an input SVG to an extremely
 simple representation, which is still a valid SVG:
 .
  * No basic shapes (rect, circle, etc), only paths
  * Only simple paths
  * All supported attributes are resolved
  * Invisible elements are removed
  * Comments will be removed
  * DTD will be resolved
  * CSS will be resolved
 .
 and so on.