How can I change paper size in headless Chrome –print-to-pdf

Question

The page size could be set in inches/mm. I haven’t tested with a size in pixels. Here is a set of CSS rules which did the trick for me:

@page {
  margin: 0;
  padding: 0;
  size: 5in 6.5in;
}

My exact case is rendering svg-to-pdf, not html; For svg, you may also need to add width and height attributes to <svg> tag:

<svg width="5in" height="6.5in" ...>

That’s all! Output PDF won’t have margins, and will preserve the desired size – 5″x6.5″ in my case.