Suggested approach for reading svg

[apfz]

I am working on a javascript based app that wiil use pyembroidery in my nodejs backend to generate .pes files.

Now I know how to execute python in nodejs, but I am trying to figure out how I can send SVG information from my website, lets say a simple rectangle () into pyembroidery and create a .pes file but usure where and how to approach this.

Could any of you give a suggestion of how I would do that with pyembroidery?