image_convertion

install :

https://www.imagemagick.org/script/index.php

1) covert format:

convert -units PixelsPerInch -density 600   SimPlot.wmf  image.png

2) white background to transparent (be cautious)

convert -density 600 -transparent white  SimPlot.wmf   trans_bg.png

3)transparent background to white

convert  -background white -alpha remove  trans_bg.png   white_bg.png

install :

inkscape

1) pdf to svg

inkscape -l out.svg in.pdf