[simonbw]

I made something almost exactly like this before. I needed to convert svgs to pngs and have them display the same way they looked in the browser. It turned out that spinning up chromium and taking a screenshot was the easiest thing way to do that. I think I used puppeteer.

Headless Chrome seems like it should be able to do what you want pretty easily. https://developer.chrome.com/blog/headless-chrome/